#electronic circuit projects

[prakashymtsdm]

10 Fun and Easy Electronic Circuit Projects for Beginners

Check out the interesting electronics journey via these beginner projects! Learn about potentiometers, LED blinkers and simple amplifiers. Get hands on how mechanics of electronics work. Novices would definitely love doing these projects as they are both fun and medium to learn about circuitry

1. Low Power 3-Bit Encoder Design using Memristor

The design of an encoder in three distinct configurations—CMOS, Memristor, and Pseudo NMOS—is presented in this work. Three bits are used in the design of the encoder. Compared to cmos and pseudo-nmos logic, the suggested 3-bit encoder that uses memristor logic uses less power. With LTspice, the complete encoder schematic in all three configurations is simulated.

2. A Reliable Low Standby Power 10T SRAM Cell with Expanded Static Noise Margins

The low standby power 10T (LP10T) SRAM cell with strong read stability and write-ability (RSNM/WSNM/WM) is investigated in this work. The Schmitt-trigger inverter with a double-length pull-up transistor and the regular inverter with a stacking transistor make up the robust cross-coupled construction of the suggested LP10T SRAM cell. The read-disturbance is eliminated by this with the read path being isolated from real internal storage nodes. Additionally, it uses a write-assist approach to write in pseudo differential form using a write bit line and control signal. H-Spice/tanner 16mm CMOS Technology was used to simulate this entire design.

3. A Unified NVRAM and TRNG in Standard CMOS Technology

The various keys needed for cryptography and device authentication are provided by the True Random Number Generator (TRNG). The TRNG is usually integrated into the systems as a stand-alone module, which expands the scope and intricacy of the implementation. Furthermore, in order to support various applications, the system must store the key produced by the TRNG in non-volatile memory. However, in order to build a Non-Volatile Random Access Memory (NVRAM), further technological capabilities are needed, which are either costly or unavailable.

4. High-Speed Grouping and Decomposition Multiplier for Binary Multiplication

The study introduces a high-speed grouping and decomposition multiplier as a revolutionary method of binary multiplication. To lower the number of partial products and critical path time, the suggested multiplier combines the Wallace tree and Dadda multiplier with an innovative grouping and decomposition method. This adder's whole design is built on GDI logic. The suggested design is tested against the most recent binary multipliers utilizing 180mm CMOS technology.

5. Novel Memristor-based Nonvolatile D Latch and Flip-flop Designs

The basic components of practically all digital electrical systems with memory are sequential devices. Recent research and practice in integrating nonvolatile memristors into CMOS devices is motivated by the necessity of sequential devices having the nonvolatile property due to the critical nature of instantaneous data recovery following unforeseen data loss, such as an unplanned power outage.

6. Ultra-Efficient Nonvolatile Approximate Full-Adder with Spin-Hall-Assisted MTJ Cells for In-Memory Computing Applications

With a reasonable error rate, approximate computing seeks to lower digital systems' power usage and design complexity. Two extremely effective magnetic approximation full adders for computing-in-memory applications are shown in this project. To enable non-volatility, the suggested ultra-efficient full adder blocks are connected to a memory cell based on Magnetic Tunnel Junction (MTJ).

7. Improved High Speed or Low Complexity Memristor-based Content Addressable Memory (MCAM) Cell

This study proposes a novel method for nonvolatile Memristor-based Content Addressable Memory MCAM cells that combine CMOS processing technology with Memristor to provide low power dissipation, high packing density, and fast read/write operations. The suggested cell has CMOS controlling circuitry that uses latching to reduce writing time, and it only has two memristors for the memory cell.

8. Data Retention based Low Leakage Power TCAM for Network Packet Routing

To lessen the leakage power squandered in the TCAM memory, a new state-preserved technique called Data Retention based TCAM (DR-TCAM) is proposed in this study. Because of its excellent lookup performance, the Ternary Content Addressable Memory (TCAM) is frequently employed in routing tables. On the other hand, a high number of transistors would result in a significant power consumption for TCAM. The DR-TCAM can dynamically adjust the mask cells' power supply to lower the TCAM leakage power based on the continuous characteristic of the mask data. In particular, the DR-TCAM would not erase the mask data. The outcomes of the simulation demonstrate that the DR-TCAM outperforms the most advanced systems. The DR-TCAM consumes less electricity than the conventional TCAM architecture.

9. One-Sided Schmitt-Trigger-Based 9T SRAM Cell for NearThreshold Operation

This study provides a bit-interleaving structure without write-back scheme for a one-sided Schmitt-trigger based 9T static random access memory cell with excellent read stability, write ability, and hold stability yields and low energy consumption. The suggested Schmitt-trigger-based 9T static random access memory cell uses a one-sided Schmitt-trigger inverter with a single bit-line topology to provide a high read stability yield. Furthermore, by utilizing selective power gating and a Schmitt-trigger inverter write aid technique that regulates the Schmitt-trigger inverter's trip voltage, the write ability yield is enhanced.

10. Effective Low Leakage 6T and 8T FinFET SRAMs: Using Cells With Reverse-Biased FinFETs, Near-Threshold Operation, and Power Gating In this project, power gating is frequently utilized to lower SRAM memory leakage current, which significantly affects SRAM energy usage. After reviewing power gating FinFET SRAMs, we assess three methods for lowering the energy-delay product (EDP) and leakage power of six- and eight-transistor (6T, 8T) FinFET SRAM cells. We examine the differences in EDP savings between (1) power gating FinFETs, (2) near threshold operation, and alternative SRAM cells with low power (LP) and shorted gate (SG) FinFET configurations; the LP configuration reverse-biases the back gate of a FinFET and can cut leakage current by as much as 97%. Higher leakage SRAM cells get the most from power gating since their leakage current is reduced to the greatest extent. Several SRAM cells can save more leakage current by sharing power gating transistors. MORE INFO

[magnificent-mechanism99]

Importance of Mechatronics Engineering

Mechatronics and IoT Engineering are among the most crucial and rapidly evolving disciplines in modern technology.

Interdisciplinary Innovation: Mechatronics blends mechanical, electrical, computer, and control engineering, enabling the creation of smart, efficient systems. Automation & Robotics: Vital in the design and control of robots, CNC machines, and automated manufacturing systems, helping industries scale up productivity.

Enables development of intelligent systems like drones, autonomous vehicles, and smart appliances. Improves design and manufacturing processes, reducing errors and increasing system reliability.

Real-World Applications: Automotive, Medical devices, Aerospace.

Connectivity & Data-Driven Decisions: IoT connects devices to collect, share, and analyze data, enhancing decision-making in real time.

Smart Infrastructure: Enables smart homes, smart cities, and industrial automation.

[volersystems]

Full-Service Medical Device Development with Voler Systems: What You Need to Know

In today’s rapidly evolving healthcare landscape, technology plays a vital role in advancing patient care, diagnosis, and treatment. At the heart of this innovation is medical device product development—an intricate process that blends engineering excellence with strict regulatory compliance. For companies seeking a reliable, experienced partner in this journey, Voler Systems.

With a proven track record of helping clients bring new products from idea to reality, Voler offers a full spectrum of services that span from concept and design through prototyping, testing, and final production. Their deep expertise in sensors, wearable technology, and measurement electronics makes them uniquely qualified to handle the complexities of modern healthcare devices.

As a full-service medical device design consultant, Voler Systems provides tailored R&D solutions for companies that demand precision, quality, and speed. Whether you're developing a wearable heart monitor, a portable diagnostic tool, or a completely new kind of therapeutic device, Voler ensures your product is engineered for success.

One of the key advantages of partnering with Voler Systems is their multidisciplinary team. With engineers and developers who specialize in electrical, mechanical, and software design, the company has the technical know-how to address every aspect of device development. Just as importantly, their team is intimately familiar with FDA regulations and ISO standards. This understanding allows them to navigate compliance efficiently and ensure that every product meets or exceeds industry benchmarks.

Voler’s approach to medical devices development is both collaborative and customer-centric. They work closely with clients to define clear project goals, timelines, and budgets—then execute with precision. Their ability to deliver high-quality, reliable devices on time and within budget has earned them the trust of startups and Fortune 500 companies alike.

Recent projects have included wearable biosensors, home health monitoring devices, and other IoT-connected medical innovations. These breakthroughs demonstrate Voler’s ability to adapt to emerging trends and technologies while maintaining a strong foundation in engineering excellence. Clients appreciate the transparency and flexibility Voler brings to the table, often praising their responsiveness and ability to solve complex challenges quickly.

In addition to technical design and development, Voler also assists with manufacturing hand-off and testing systems. Their robust prototyping and validation services help ensure a seamless transition from design to production. By identifying potential issues early and iterating quickly, Voler helps companies reduce risk and speed time-to-market.

In an industry where accuracy, safety, and speed are critical, Voler Systems delivers unparalleled support and innovation. Whether you're a startup looking to develop your first device or an established brand aiming to modernize your product line, Voler provides the expertise and reliability you need to succeed.

If you're ready to take your medical device concept to the next level, partner with Voler Systems—the trusted choice for full-service medical device product development.

[space-hopper14]

Building electronics is hell on earth

Actually creating devices and wiring and soldering etc makes me want to gouge my eyes out but there’s only one thing worse, not making the devices i dream up. I’m so convinced that this is my personal hell, a punishment for the sin of pride or smth. I do adore them once they’re finished though

[pcbcircuit]

Best PCB Assembly Services in India

Pcbcircuit is one of the best printed circuit board assembly Services providers and manufacturer companies based in India. Printed circuit board Assembly work in tandem with engineers and other electronic professionals. We offer printed circuit board assembly services and PCB Assembly manufacturer services with 100% quality guarantee.

[guitarbomb]

Jeorge Tripps the man behind Way Huge Electronics

[learnandgrowcommunity]

VHDL Basics : Don’t Miss Out On The VHDL Revolution - Learn It Today!

VHDL - Language for Hardware Design : Don’t Miss Out On The VHDL Revolution - Learn It Today! Are you fascinated by the world of digital design? Interested in learning the powerful hardware description language, VHDL? Look no further! In this comprehensive beginner's guide, we bring you an opportunity to embark on a journey to master VHDL and join the revolution of digital design. VHDL (VHSIC Hardware Description Language) serves as a crucial tool for designing and describing digital systems. Whether you are an aspiring engineer, a student, or a professional seeking to enhance your skill set, this tutorial will provide you with a solid foundation in VHDL. Throughout this video, we delve into the fundamentals of VHDL, explaining its syntax, data types, operators, and control structures. We'll explore various modeling techniques, such as data flow and behavioral modeling, enabling you to conceptualize complex digital circuits effortlessly. You'll also gain insights into designing finite state machines (FSMs) and understanding the importance of testbenches for verification. To make your learning experience interactive and engaging, we offer practical examples and guide you through hands-on projects. By the end of this tutorial, you'll be equipped with the knowledge and confidence to design your digital systems using VHDL. Don't miss out on this VHDL revolution! Join us today and unlock endless possibilities in the realm of digital design. Subscribe to our channel for more exciting tutorials and stay ahead in the ever-evolving world of technology.

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[kinderausasbest]

From time to time I dive into electronics and try building something interestingly sounding. This time it became a drone machine based around the CD40106B Hex Inverter and a TL074CD quad op-amp. Pretty happy with the cinematic noisy landscapes that comes out of it.

[oldguydoesstuff]

Childhood memories. I had several of these Radio Shack X-in-one kits growing up, where you page through hundreds of projects and build them by connecting wires through little springs.

To be honest, I did not learn much circuit theory building these. But it sure planted the bug for being interested in electronics, and eventually computers

[sharp-silver4795]

BEN Drowned HCs

I felt like doing some character headcannons so here we are!

Quick warning: THIS IS A LONG POST!! I really like my version of BEN-

Story Elements

⚠️CW!! implied su1c!de, parent divorce, and bullying. I took a few headcanons and a lot of the stories and mashed em together into this mess-

He’s autistic. He struggled a lot as a kid and teen. Especially after his parents divorced, his issues at school seemed to only get worse. He developed some anxiety around being social and tried to stay away from people.

During school he would live with his dad. It was a pretty place. There was a small wooded area behind the neighborhood, but it had a nice clearing with a lake… Ben was too scared to ever go in since he didn’t know how to swim and couldn’t see the bottom.

He got bullied a lot and didn’t have many friends, but found comfort in video games.

He can’t handle being touched and he hates eye contact. The only way he was ever able to communicate was through screens because it made it easier for him.

He loved to get lost in the fantasy of the worlds he played in, especially Legend of Zelda: Majora’s Mask…

As a young adult, he couldn’t get away from the screens. He felt safe! He felt normal, though hiding from the world.

As time went on, at age 21, he realized he couldn’t live like that. But he was too scared to go… he didn’t want to repeat every other time of his life.

So, he found some chains in his dad’s garage and decided to finally take a ‘swim’ in the lake…

Living in the Screen

So, yes. He’s apart of the Mansion and has the cabin within the Mid-Mansion.

He prefers to live behind the screens though. There’s no sound except the buzzing of the electricity, he’s not having to move around the circuit board, and he has completely privacy.

He’s in the game system, yes, but not too far. It’s almost like he’s in the lights that bring the graphics to life.

He’s not visible unless you put your face right up to the screen. You might see a few green and brown pixels-

That’s BEN.

Social Shocker

Introvert v. Extrovert

He’s pretty quiet and introverted.

Sure, he likes talking to people, and he can strike up a conversation with just about anybody…. But when push comes to shove, at the end of the day…. Leave him alone. Let him sleep in his electronic void.

Friendships

He has a few genuine friends that he holds close: Lost Silver, Dark Link, Neon Spike, Nina the Killer.

Outside of those friends, he doesn’t really hang out with anyone consistently.

Self Esteem

BEN actually has a lot of insecurities.

The water made it so his skin looks like it’s constantly peeling. He’s a sickly bluish green with bleeding eyes and carries chains on his arms and legs.

It makes him feel gross. So, he hides in his electronic void….

Unless he finds one of his “distraction buddies:” Jeff the Killer, Puppeteer, Nathan the Nobody, Clockwork, Jane the Killer, and LJ

These are the ones that he feels he’s better than. If he feels bad in his appearance or skills in murder, why not crush someone in a video game?

Burn Out

Like most people, he can get social burn out- or even video game burn out.

When he’s feeling socially drained he’ll either escape to the screens, or sit with some of the quieter folks.

It seems quite counterproductive to be with people while you’re socially burnt out- but it works for him.

He particularly likes to watch others work on their projects: Jason and his dolls, Liu with metal and woodworking, Helen painting, etc.

Neutrality

You might have noticed that there are members of both the Mansion and the Dungeon in this section.

That’s because the Operator can’t restrict his social life.

It tried to and failed miserably.

It’s not that BEN can move through electronics of any kind- BEN becomes the electronic.

The Operator can’t keep him from getting anywhere and to anyone…

In the Mansion

BEN is really just cybersecurity.

He keeps a tab open for people who he’s told might be getting a bit close to answers.

He’s also the alarm/warning system.

He set up a way to detect if someone who isn’t in the mansion gets within a certain radius, so he notifies the Rebellions.

Murder

BEN has to have his fun too, right?

He likes to challenge his victims and give them a chance at survival.

Basically, it starts by him being summoned (usually by accident).

Then, he gives the typical warning: YOU SHOULDN’T HAVE DONE THAT

After that, he cyber-stalks his victims for a while. Whenever he’s decided he wants to end it, he appears to them again.

He cuts all their power and cell service except for the device they’re on. He challenges them to a game…

If they win, they live. If he wins, they die.

Little does the poor victim know, BEN is a sore loser… in truth, they’re not making it out alive.

They are usually found dead after being electrocuted by their own device. It will be passed off as an electronic malfunction.

Sexuality, Gender, Etc.

He’s not exactly Aromantic, more like gray-romantic. He just doesn’t believe he can be in a relationship.

HE/HIM!! It makes him feel human again and not like a fucking monster.

Divider Creds: sisterlucifergraphics

Header Creds: MEEE!!!

[walnutcookie]

What if Vee short-circuited during a show or something and all you heard was Vee's static and Connie like trying to fix her

I wonder if this would be a rare occurrence or one that Connie would know how to handle

Assuming this is about tower of souls and not canon dandys world since youre talking about vee and connie together GDBKFBG

I think vee would be a more sensitive than the rest of the toons, but really she doesnt have that much more of a chance of malfunctioning than connie does. i dont have the logic all worked out but since the toons are all made of ichor they dont use electricity so they cant have any power-related malfunctions. HOWEVER the ichor is controlling their endoskeletons and hydraulics and such so if theres an issue with their inner workings they can still have some issues, which is also a big reason why dandy was so excited to tell the toons they wouldnt malfunction anymore after getting ichor-ified :P Thats sprout and cosmos job to fix the toons when their bodies are all fucked up (delilah and arthur are there to handle more extreme repairs that would be too agonizing or require excessive work and detail)

but. hmmm. vee.

I think it might be interesting if at least her head was electrically powered. so like. Her body could still move but if the power in her head goes out she could lose all of her senses and speech until she gets her battery charged or replaced,,, which is kind of a funny mental image imagine her going to sleep and connie has to lay in bed with that long fuckin wheel (honestly she might just sleep standing up like a horse) while vee takes out the batteries in her head and places them off to the side before she lays down to sleep GHAHAHA

that also raises the question of what her screen would be like once she gets ichor-ified. Does girlie get an actual face since ichor cant simulate a screen holy shit

But like. i have been thinking for quite a while about how vee would work exactly in this au and i think that might be what ill go with :] her head still has some ichor in it but the ichor cant simulate an actual tv and project images onto her screen which is why they kept her head electronic.

anyways to answer your question! After talking out loud to myself in this post for like 10 minutes i think if vee's head were to malfunction theyd probably do the same thing as they do with any toon malfunction - they pause the class and escort the guests out and promise them a rescheduling or a refund. if its something as simple as changing the battery connie can probably do that herself but if its something more intense they might pause cosmo and sprouts class too and have them deal with it (though it may make more sense to have the founders do it so their class doenst get cancelled too ... idk :P). It would probably hurt vee to start glitching out so i can imagine if its something like that connie would take her battery out and if that doesnt fix the problem immediately when she puts it back in she'd help guide vee to sprout n cosmos floor since shes blind and deaf in that state. either way though again i think vee is just a little bit more sensitive than the other toons, she doesnt malfunction or glitch very often :]

ouhg i need to think about this more actually now im thinking about vee and connie. Thank you for inspiring me anon 🙏🙏

[volersystems]

Wearable devices have evolved from simple gadgets to sophisticated systems that integrate seamlessly into our lives. From fitness trackers to advanced healthcare monitors, the scope of wearable tech continues to expand. Designing wearable technology presents unique challenges, including miniaturization, power efficiency, data security, and user experience. Electronics design consultants tackle these challenges head-on with their specialized knowledge and experience.

[studyblr-perhaps]

Misa Explains 1: Spintronics in a nutshell

A series of posts where I will explain bits and pieces of physics I have gathered throughout the my foray into this wonderful science. Warning, these will be long.

Highly inspired by @chemblrish and @minmin-vs-physics 's posts on their fields, check out their posts (linked on this post in various places!)

Wait what even is going on?

Okay, first of all, why are we even talking about spintronics, whatever that means? Now, we live in an age where we need devices, right? Phones, TVs, laptops, name it. All digital devices come under electronics, which is a cluster of what we call "logic devices" (verrry loosely speaking) with various functions, made with expert circuitry to create our sophisticated "smart" devices. Whew. That's a lot of words. But what does it mean? It means that the very device you're using to view this post is made up of very tiny mini devices, which are made to utilize electrical signals (current, flow of electrons) to make it store information, read information, or perform logic tasks ("AND", "OR" "NOT" and the rest. Let me know if you want me to explain those, but this is not the point of the post so I'm letting them hang in the air for now).

We store digital information in the form of 'bits' (I swear all of this is relevant, please be patient) which is a computer's language of storing and using information. If you've watched any show involving hacking, you'll see stacks after stacks of "1"s and "0"s on their high contrast screens in that radioactive green font (general older sister advice: don't use high contrast it hurts your eyes), these are bits and the basis on which logic devices work. Each combination of 1s and 0s makes a different information, which is the backbone of computing. Now, how these devices make 1s and 0s is again a whole course on electronics, so I will skip over it to just preface that they exist and that's how we make digital devices.

All these years, we have used semiconductors, which allow moderate amount of current flow from them (in contrast to conductors, which allow free flow of electrons, and insulators, which do not allow flow of electrons) to make transistors, which are currently the building blocks of circuit-making devices.

[here's a picture containing ICs (the bug-like looking thing covered in wires) which have tiny transistors inside them, and the LEDs, on which the lit ones are "1"s and unlit ones are "0"s. This was my project for one of my courses!]

In electronics, a very famous law called Moore's Law, states that for increase in tech and development, the amount of transistors in integrated circuits (IC) doubles every two years. This moves proportionally with the increase in use of semiconductors, because transistors are made using them.

Every device maker's main goal is to make a device faster, smoother, and more functional. Which means, more transistors, better semiconductors. Moreover, the smaller space occupied by the ICs, the better. But obviously there's a limit to how much we can decrease the size of the transistors. One is the technical issue of creating such a small object, which will require highly precise instruments which we are not in possession of/ not feasible in the long run. The second issue is the working. "Will a semiconductor keep it's properties when they layer is so small?" is a valid question to ask when we go further down in scale. In simple words: in the long run, improving semiconductors for transistors will be difficult. Moore's law plateaus, and the number of transistors doesn't double with two years. What now? We can't just stop developing better computing devices, not just smart devices, astronomy, medicine and other scientific areas also require reliable, stable and fast computing devices.

Which means we desperately need new materials (and techniques) for logic and memory devices.

Hold on, when's spintronics going to start?

Okay background information done. Now we move onto spins and why we use it. We know that atoms are made of protons, electrons and neutrons. Out of these, electrons "revolve" in "orbits" around the nucleus, which holds the protons and neutrons. I put "revolve" and "orbits" in quotes because essentially it's a cloud of probabilities and we have no clue what path it truly takes. Electrons reside in what are called 'orbitals', which are balloon-like spaces which have a high probability of the electrons being present in (@/chemblrish explains orbitals better here).

Now along with the "revolution", electrons also considered to have a "spin". We don't really know if it "spins" the way Bayblades do, but regardless, they have an angular momentum, which is classically something rotating objects possess (@/mimin-vs-physics goes more in depth on quantum mechanical fun stuff) Either way, we don't know why it has angular momentum, but we know it does (at least I have no idea if we've figured it out??). And in true human fashion, we see anything new and think "now how can I utilize this for my benefit?"

Years and years of research later, we figured out something interesting. The angular momentum which the electron spins contain, and the angular momentum of electrons in "orbits" can interact! This interaction is called Spin-Orbit Coupling (SOC) and it causes a bunch of other fascinating phenomena in quantum mechanics. One of which, is that it if we supply electricity into a metal plane, we can align the electrons and their spins in such a way that it causes a stream of current (remember: current is essentially a flow of electrons in one direction) with aligned spins to move into a different layer perpendicularly.

Okay but what does all of this have to do anything with Spintronics?

We're finally at the part where we can discuss what Spintronics is! We can use our now generated spin current to make electronic devices (hence, spintronics!). So, how do we make these tiny devices?

What we first take is a heavy metal (these are metallic elements/alloys with high atomic numbers, which have a lot of free electrons to use) and make a very thin film of it. (The procedure of making thin films is very interesting, and I will make the next post on it!) We can now pass a stream of current/electricity* parallel to the surface of the thin film, which will give us a stream of spin-aligned electrons bouncing to move into an upper layer.

For the upper layer, we add a thin layer of a ferromagnet. A ferromagnet is a type of material which readily aligns its spin on one direction when under a magnetic field (contrary to this are paramagnets which weakly align their spins, and diamagnets which weakly align their spins opposite to the applied field).

Now remember the electrons with their spin aligned which wanted to move into the upper layer? Yeah once they are given an upper layer to move into, they flow into the layer, bringing their aligned spins with them. This spin can now affect the ferromagnet's spin, and align it in either the direction of the applied electric field ( the one applied on the heavy metal layer. I'm marking it as * for you to check which electric field I mean) or directly opposite to the direction of the electric field. This alignment can be measured. The value doesn't matter, only the direction. Is it parallel to the electric field or anti-parallel? "Up" or "down"? "Left" or "right"? Or, in terms of electronics, "1" or "0".

And look! We now have a way to make a tiny device which can display values of "1" or "0"! We used an analog signal (electricity) to create a digital output (1s and 0s)! That is electronics! But because it uses spins, it is called Spintronics.

Because we use Spin-Orbit Coupling, these devices are extremely precise and fast. And the layers of heavy metal/ferromagnet will be in the ranges of nanometers (10^-9 m), so they are also extremely small. We can also choose materials with properties we like (high melting/boiling point, low reactivity) to create devices which can work in extreme conditions (high heat, pressure, reactive areas).

And here we have it! We've made spintronic devices!

End of post disclaimer: I am a Bachelors student and I will have mistakes. I also tend to exaggerate. So if I have made a mistake in this post, please inform me nicely in the comments or tags!

[stevebattle]

Prowler by David Buckley, in Sinclair Projects, Aug/Sep & Dec/Jan 1983. Prowler is a low-cost, expandable micro robot vehicle, controlled by a host computer. "So far the available robotic add-ons have needed either complex software to interface them to a home computer or have been too costly, or too big. The BBC Buggy costs more than £100 and even Zeaker, the latest of the add-ons, costs slightly more than £50. Projects Prowler in its first stage of development should cost about £20. Prowler consists of a converted remote-controlled s-scale tank kit, with a circuit board holding some electronics to control the motors, lights, horn and later some bump sensors." – Prowler control adds movement to the ZX81, Sinclair Projects

[some-small-mercy]

Shadows in the Cave - Notes on an Incursion - Tangled Space

I’m delighted to be able to answer some of your questions. Psychic depressions are absolutely fascinating phenomena, and the most conclusive proof I’ve encountered of the mind’s primacy over ‘objective’ reality. When you see the weight of human passion and intensity quite literally deform the world around it, what further evidence do you need?

The specifics of it are still opaque, I admit, but the basic mechanism is quite simple. When a specific and self-contained strip of land (always a complete circuit, such that walking along it deposits the walker back where they began) becomes the repository of a critical mass of intense feeling from a sufficient number of people, then their collective image of the circuit becomes more real than reality, and superimposes itself over it. When they collectively agree that the strip of land is infinite, endless, and inescapable, then so shall it be - with each circuit completed, they take another step into a liminal space between the world of atoms and the world of dreams. 

The requisite weight of emotion is no small thing to organize and direct, and almost never occurs by accident. But once constructed and stabilized, depressions are really quite stable. My little community of truth-seekers has lived almost entirely inside of one for years now. 

—-------------------------------------------------------------

The Tartarus Site is a bit of an oddity. Well, everything about Nyx is odd, but Tartarus especially. Walls, cameras and armed guards around the clock to protect, what - a half-mile long loop through a rat’s nest of derelict homes and ‘urban prairie’? There’s a whole lab complex, and an army of surveyors and photographers who came in during construction to make the view from the loop was never disturbed. The whole production must have cost more than some countries’ GDP - but every cent was worth it. 

Put simply, Tartarus is a stable dimensional abscess - a place where spacetime has been permanently warped by hypergeometric energy, but in a predictable, reliable and unchanging way. The value for Nyx is obvious - there are satellite labs and quarantined studies scattered all over the place, but Tartarus is our beating heart. 

Among many, many other uses, it’s how we stress-test. 

Project Nyx exists to sculpt the next step in existence - to create a stable and worthy inheritor to earth’s civilization once the current users are no longer fit for purpose. There are a lot of different ways that might happen, but the most obvious is the millenia-long streak of good luck we’ve had evolving in a cosmological tidal pool finally breaking. The curtain is going to fall eventually, and when it does homo sapiens sapiens will start tearing its own eyes out. So we need to make sure whatever we make can do better. 

Tartarus is a space with an additional dimension of movement - the more loops you complete of the walking trail, the further you get from the rest of the world and the more directly you are exposed to hypergeometric energy. After six loops radio signals are lost and unshielded electronics start to break down. After thirteen, leaving the trail any way but turning around and retracing your steps becomes impossible. After thirty-three, attrition rates for baseline humans exceed eighty percent. 

Last week Subject Muninn set a new record, returning apparently alive and plausibly sane after entering a 482nd loop. We’re all hoping it survives decontamination and debriefing well enough to share some stories. 

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Threat GLACIAL JUDAS is a dangerous form of  FOREIGN incursion created by Threat PIOUS WEEPERS as part of their attempts to invite a direct, physical invasion from ABROAD. With the completion of Operation SALTED ANTIOCH, WEEPERS have been burned out, but containing and dealing with JUDAS is an ongoing issue until F-CELL figures out how to destroy it. 

PIOUS WEEPERS created three different instances of JUDAS that we know of - and we are pretty damn sure that that’s all of them, seeing as how otherwise we’d all be dead. Besides which, digging each one seems to have been difficult or expensive or both, even for a cult like that; the second and third paths were only dug once PIOUS WEEPERS  was on the run and we had secured the first one (and lost a damn good Agent stumbling into it). 

JUDAS paths don’t look like anything special from the outside, or anything at all. One is nothing but a pair of drainage pipes under a highway and two goat paths between them on either end. Which is the whole point; each path is a circuit, and you will only realize what it is once you’ve walked it more than once. 

Each instance of GLACIAL JUDAS is a secret door from here to ABROAD, a path that looks normal until you start walking it right down into hell. And there’s something at the other end knocking and asking to be let in.

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The outer levels of a depression - those closest to the material -  differ from it only in the lack of wildlife and the pleasant insulation from the noises of the outside world. Each level is also really quite separate from those which border it. We’ve built dormitories on one, a cafeteria and concert stage one level further out, and mediation areas on a level further in. Despite occupying what are theoretically ‘the same’ part of the little patch of Floridian paradise we have acquired for ourselves, the only way to even hear one from the others is if someone is loud enough for the sound to echo all along the path we’ve cut around and through the island. 

The inner levels are less anchored to mundane reality and more subject to the symbolic impressions that formed the depression - in our case, heat and humidity predominate and the effect quickly becomes sauna-like. The flora begins changing as well, from reflections of the greenery in the outer layers to reflections of how it is perceived. Brilliant flowers, dangerous thorns and snarled roots, and an absolute cornucopia of fruits as tempting and luscious to behold as you might imagine. Some are filling and delicious enough to be the mainstay of a dier, some rot on the vine or taste of rat poison and razor blades – determining which can be safely eaten and harvesting them at scale has been a major preoccupation of our community for some time now. 

The innermost levels of the Depression spiral towards the egregore born of its creation, which perpetually dreams and maintains it. Wildlife reappears, now wholly symbolic dreamstuff but not any less capable of stinging, biting or poisoning unwary explorers for that. The landscape and the very laws of reality become increasingly dreamlike as well - and this is the focus of my current research. It is my contention that these inner levels will, to a sufficiently trained and conscious dreamer, be as malleable and controllable as their own mind it - that the depression can be reshaped to any sort of paradise or sanctuary which might be required. The therapies and courses I oversee are focused on achieving this precise level of control, and with the right natural talent I am sure we might enthrone them to replace the reactive and often-unhelpful egregore with someone who can truly dream of Paradise.  

So far we have had little luck, I admit. But I believe this has been nothing but my own squeamishness - an unwillingness to trust one of my students to maintain their own identity as the egregore subsumes them. This, then, is what I hope you will be willing to generously sponsor and support. I’d ask you to imagine what we might accomplish - but in six months I hope I will simply be able to show you. 

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What exactly it’s like inside the Tartarus anomaly itself is strictly classified - of course it is, too high a risk that an accurate description of what a high-energy loop looks like is an infection vector for some memetic parasite. Not the worst thing to have happened when someone gets sloppy - but the general details are easy enough to piece together. Each layer is a bit less protected from the energies bombarding most of the universe than the one before - you’re crawling up a long, spiralling ramp from the earth to the stars. Which works out about as well for you or me as going sunbathing without an ozone layer. 

Assuming a subject can deal with unpleasant climate and inhospitable terrain, the minor Infections that start festering into animal-like life a couple dozen loops in are the first real issue. None with anything like intelligence, but the evolutionary pressures mean there are a lot of parasites that will try to burrow in and not mind one bit if they’re accidentally carried back down to an easy meal. Which is most of why the quarantine and decontamination whenever a team gets back is so harsh and thorough (relatedly, did you know that we’re the second generation of the project? The Director had to sanitize the whole site herself.)

But the real difficulties only start around layer three hundred. That’s when there’s basically no resemblance to earth as any of us experience it left, and the basic laws of physics and makeup of the world start breaking down. You know, where relying on a mouth and lungs to breathe oxygen or thinking that skin is enough to keep your blood and organs inside of you suddenly become lethal oversights. 

Tracking past layer five hundred or so is pretty useless, really. That’s when you really do reach Nyx - primordial night, the chaos from which all order was born. There are no bodies, because the universe is not yet composed of matter. There is no consciousness, because reality is not stable or complex enough to enable thought. 

I’m not sure the party line about what we’re doing here is true, if I’m being honest. We have some clues about the wider universe out there, and it’s not all anywhere near as lethal. 

I think the Director’s aiming higher than just creating something that can survive us, or at least part of her is. I think she’s trying to make something that can deal with the end of the world by creating a whole new one from scratch.

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GLACIAL JUDAS is a tunnel under a castle wall; a secret entrance through which FOREIGN agents and infections can seep into the world. The tunnels aren’t complete, but they go deep enough that the noise from the other side can start to echo through. Unguarded, the area around each of them will become the hunting ground of some monster crawling up from the pit within months.

PIOUS WEEPERS at least knew what it was; most cults are precious about it, but they admitted outright that they were clearing the way for their eyeless angel of revelation to ‘tear the scales from the eyes of the world’. You can almost respect it, once the threat is dealt with and the bodies are cooling. Most of their texts and relics went up in smoke, but a few were saved to send to F-CELL. Hopefully they can figure out how to seal JUDAS with them before any other poor idiots stumble down the spiral. 

K-CELL does not have the manpower to secure the three different locations, and we aren’t lucky enough to rely on them being scattered across the ass-end of nowhere to keep them safe. GLACIAL JUDAS is a demonic picture plant, and God knows how many people are still trapped inside one of their depths, too far gone to even try and claw their way out. Though they’re still better off than the ones who do. 

It isn’t an angel, but there is something at the bottom of all of the pits. The WEEPERS never shut up about it, and it had just about hollowed Agent KEVIN out and filled him up by the time he crawled back into the world. 

Whatever it is, we need either a way to seal all three pits nearly or enough high explosives to do it the old fashioned way, because both of us can already hear it sing. 

[solarpunkbusiness]

17-year-old Zabeer Zarif Akhter earned a coveted spot in The Stockholm Junior Water Prize — an international competition hosted by the Stockholm International Water Institute in Sweden. In the competition, students from ages 15 to 20 are tasked with developing research projects and building inventions that tackle the world’s leading water challenges, including pollution, drought, and water scarcity. 

Akhter’s focus? Contamination. 

In his home country of Bangladesh, a shocking ​​49% of the country’s drinking well water has unsafe limits of carcinogenic arsenic, which can cause skin lesions and cancer in the bladder and the lungs. Climate change has worsened the water contamination crisis, with an uptick in cyclones and torrential monsoons causing devastating floods throughout the country. 

Akhter invented a first-of-its-kind water purification system that uses ultraviolet radiation and plasma sterilization to remove pathogens like E. coli, TC toxins, and Fd bacteriophage from the water. 

Remarkably, the water purifier is made entirely from electronic waste including recycled laptop batteries, damaged circuit boards, abandoned driver motors, and even parts from an old TV.