#zendrive

[bandchat]

A few years back John Mayer had JHS Pedals reverse engineer his a box later effects loop pedal by Dumble, then build a clone, so he could gig with that instead. JHS recently took this schematic, added a clone of the Zendrive (which models an overdriven Dumble amp), and put it all in a pedal for the public they christened the NOTADÜMBLË. And that's where the fun begins…

It seems that Josh Scott didn't remember that they actually reverse engineered two pedals for Mayer, and the design they put into the NOTADÜMBLË isn't the coveted one that Mayer uses on his effects board. The video above details how this mistake occurred.

Because of this, JHS will be discontinuing this version of the pedal. If you are desperate to get one, the remaining stock goes up for sale on Friday May 23rd, 5 pm Eastern.

[teardownit]

DIY Dumble-like sounding MOSFET Overdrive

The Hermida Zendrive guitar pedal we will study, assemble and listen to today is a true masterpiece. Many say its sound is close to the Holy Grail of guitar amplification - Dumble Overdrive Special.

Other people are more pessimistic in their judgments. Still, the precise response to the picking dynamics, the Voicing tuning options, and the sheer beauty of this overdrive's sound are simply impossible not to love.

But before we study the Lovepedal Zendrive or its copy of the Landtone Phoenix song, or the Aion effects Azimuth dynamic overdrive, we'll study the evolution of the MOSFET overdrives that finally resulted in the development of this gem.

Fulltone OCD

Mike Fuller was one of the first to start using MOSFETs instead of diodes to limit the amplified guitar signal in 2004.

His Obsessive-Compulsive Drive overdrive-distortion pedal is built on a standard circuit with one dual op amp. The first operational amplifier, X1, amplifies the amplitude of the guitar signal by a factor from 8 to 463 times, depending on the position of the drive control X3. This is a 1-megohm potentiometer.

Further, through resistor R9, the signal is fed to the limiter, which comprises 2N7000 MOSFETs M1 and M2 connected in parallel. A germanium diode D1 - 1N34A is additionally included in series with M2, which makes the limiter asymmetrical and, therefore, makes more interesting sound.

A limiter in overdrives is usually included in the negative feedback circuit of an operational amplifier (i.e., in parallel with C6). Such a limiter is called a soft limiter.

And here, a hard limitation is applied: clipping sections are included between the preamplifier output of the gain section and the virtual ground - half of the supply voltage Vref, formed by resistors R4 and R7.

Virtual ground is used in the unipolar powering of operational amplifiers to amplify analog signals, such as audio signals. The guitar signal does not change from zero to plus but from minus to plus, passing through zero.

To prevent the signal from being limited to the circuit's ground, it is shifted in the plus direction by half the supply voltage.

Such hard limiting is typical for distortion pedals. But by using MOSFETs instead of diodes or LEDs, the top of the signal is not cut hard but softly rounded. Therefore, OCD can work as both distortion and overdrive.

Due to the smoothed peaks of the limited signal, the sound is highly dependent on the sound's attack dynamics. For rock and especially blues, this is very valuable. With modern metal pickups that compress the dynamic range of the signal, it can help make solos sounding more sweet.

The second operational amplifier X3 amplifies the limited signal by a factor of 3.8, correcting its timbre. Capacitors C6 and C9 prevent the self-excitation of operational amplifiers at high frequencies.

Next is a simple passive tone knob, which implies a treble leak circuit. Potentiometer X4 10 kilohms and capacitor C11 47 nanofarads are connected in the same way as on the pickguard of any electric guitar.

The Switch1 switch changes the circuit's output impedance as if the high-impedance and low-impedance pickups were switched. When it's open, you get a transparent overdrive like the Klon Centaur, and when it's closed, you can get a more aggressive sound like the Marshall Plexi.

Hermida Audio Zendrive

The Zendrive pedal's authors, Hermida audio technology (now produced by LOVEPEDAL LLC), have undoubtedly studied the Fulltone OCD thoroughly. Let's find the differences between the two circuits.

First, the limiter is included in the operational amplifier feedback, that is, between the output and the inverting input, not between the output and virtual ground. That is, here we have a soft limiter.

Secondly, one diode is added in series with each MOSFET. Clipping remains asymmetric: we have one diode in the left arm of the limiter and two diodes in the right arm.

Third, the second operational amplifier is used as a voltage repeater, aka buffer: the output is directly connected to the inverting input.

Fourth, the tone control is implemented a little differently: two OCD`s switchable resistors are replaced by a potentiometer.

And finally, the most critical, fifth difference. A potentiometer is included in the tone correction circuit between the inverting input of the first operational amplifier and the artificial midpoint.

This fourth knob, Voicing, or Character, allows you to smoothly adjust the lower frequencies in the overdrive structure over a wide range, similar to the Resonance control on many tube guitar amps.

The potentiometer is signed as a trimmer in the diagram because some pedal makers don't want to install a fourth knob on the pedal`s body. This is what Landtone did when developing the Phoenix Song Overdrive DIY kit.

The developer suggests installing the trimmer on the PCB, and to access it, you need to disassemble the pedal by unscrewing the footswitch nut and taking out the PCB.

But I will not be lazy to drill an extra hole in the pedal body and install a potentiometer with a knob, connected to PCB by wires instead of the trimmer. Because I consider this regulator simply invaluable and irreplaceable.

Before we get to assembly and testing, let's look at another pedal with a similar adjustment. However, it is based not on the Fulltone OCD but on the Ibanez Tube Screamer.

The Precision Drive

This is a signature pedal by Misha Mansour of Periphery, manufactured by Horizon Devices. Compared to the original Overdrive Pro TS808, the circuit adds a noise suppressor, which we will not consider, and an exciting ATTACK switch.

The Precision Drive scheme was studied and partially replicated by PedalPCB and PCB Guitar Mania. They are manufacturers of DIY kits for guitarists. Their products are called Dwarven Hammer and Collision Drive, respectively. A noise gate is not provided there, but the attack switch is implemented. This is the main difference between Precision Drive and many other overdrive pedals.

In the Fulltone OCD schematic, we saw a resistor switch at the tone shaping circuit in the output section. The Zendrive has a variable resistor in the preamp's RC circuit which is controlling the overdrive structure.

Precision Drive has a constant resistor in the same place, between the inverting input of the overdrive section operational amplifier and the virtual ground, but the capacitors are switched.

This is the same thing: we change the time constant of the RC circuit, which adjusts the audio signal's frequency spectrum. At the same time as the time constant, the complex impedance changes, thus the gain.

A resistor is a resistance to both DC and AC current. At the same time, a capacitor is only resistant to AC current because DC current does not flow through a capacitor. Since DC current does not flow through our RC circuit, there is no difference between adjusting the resistance and switching the capacitance.

But the active/reactive ratio affects the circuit's Quality factor, i.e., its resonance. It's no coincidence that the knob on guitar amplifiers, which adjusts the same frequencies as our potentiometer or switch, is often called RESONANCE. And it is used to adjust to the resonance of the electromechanical system - the loudspeakers in the cabinet, along with the masses of air in and around it.

The reactive impedance accumulates energy and gives it away, except for losses due to dielectric recharging and magnetizing the magnetic core in inductors. This is why coreless inductors are often used in high-end equipment, so-called air inductors. They weigh a lot, take up a lot of space, and are expensive because copper is more expensive than steel. But these are the laws of physics on which technology is based.

Unlike reactive impedance, active resistance converts electrical energy into heat, thus reducing the Q-factor. In some cases, it is necessary and useful. In others, it is harmful. Or it simply creates a unique sound character.

That's why switching capacitors and turning the potentiometer knob in the feedback circuit of an audio frequency amplifier is almost the same thing, but not quite. And it's great that there are such different variants of guitar overdrive pedals!

Landtone Phoenix Song Overdrive

Now you can hear how my Zendrive from the Landtone OD-1 kit sounds, with a Seymour-Duncan SH4 humbucker on a Gibson MM Explorer guitar, into an Orange MT20 with a Torpedo Captor X. And see how I assembled the pedal and also a kitten walking around the table and prancing around.

I liked the pedal, especially its fourth magic Voicing knob, which does things to the sound that other tone controls can't. I also liked the bird on the body. Because I love birds. And in the music world, the decoration of instruments and hardware plays no small role because it inspires creativity. And the fact that the pedal is assembled by my hands also warms my soul and creates inspiration.

[momotyler]

Nux Steel Singer: i'll Dumble for you

   i wrote a review of two d style pedals a week(ish) ago and i mentioned that i would be writing about other d style pedals as i get them.  i forgot that i already had a pedal that fit that descriptor.   The Nux “steel singer drive” is really a perfect pedal for people that are interested in Dumble whether it’s your first d-style pedal or if you’re happy with the caline mellow drive or zendrive…

[myanimeinfo]

Zendrive - Tempat Terbaik untuk Download Anime Batch

Pengantar: Zendrive adalah tujuan utama bagi para penggemar anime yang ingin menikmati koleksi terbaru dan klasik dari dunia anime. Dengan antarmuka yang ramah pengguna dan berbagai pilihan, Zendrive memastikan pengalaman pengunduhan anime yang mulus dan memuaskan.

Mengapa Memilih Zendrive?

Koleksi Anime yang Luas: Dari seri terbaru hingga klasik yang tak terlupakan, Zendrive memiliki koleksi anime yang memenuhi selera setiap penggemar.

Subtitle dalam Bahasa Indonesia: Setiap anime di Zendrive dilengkapi dengan subtitle dalam bahasa Indonesia, memastikan bahwa Anda dapat menikmati cerita dengan sepenuh hati.

Tautan Cepat dan Handal: Proses pengunduhan di Zendrive sangat cepat dan andal, memastikan bahwa Anda dapat menonton anime kesayangan Anda tanpa gangguan.

Antarmuka Ramah Pengguna: Navigasi di Zendrive dirancang dengan baik, memungkinkan Anda dengan mudah menelusuri dan menemukan anime yang Anda cari.

Cara Menggunakan Zendrive:

Buka situs Zendrive di https://www.zendrive.my.id/. Telusuri koleksi anime atau gunakan fitur pencarian untuk menemukan anime tertentu. Klik pada judul anime untuk melihat detail dan pilih kualitas yang diinginkan. Klik tombol unduh, dan Anda akan segera menikmati anime favorit Anda! Kesimpulan: Zendrive adalah sumber terpercaya untuk mengunduh anime dengan subtitle bahasa Indonesia. Dengan koleksi yang luas, antarmuka yang ramah pengguna, dan pengalaman pengunduhan yang cepat, Zendrive memenuhi kebutuhan setiap penggemar anime.

Kunjungi https://www.zendrive.my.id/ hari ini dan mulailah menikmati dunia anime dengan cara baru!

Pastikan untuk memasukkan tautan ke situs Anda dan memeriksa apakah artikel ini sesuai dengan kebijakan backlink dari situs tempat Anda akan memasangnya. Jika ada perubahan atau penyesuaian yang Anda inginkan, beri tahu saya!

[guncelkal]

External Recorder Asus ZenDrive V1M 24x

If you’re passionate about IT and electronics, like being up to date on technology and don’t miss even the slightest details, buy External Recorder Asus ZenDrive V1M at an unbeatable price. Optical Drive: DVD±RW Colour: Black Speed: 24x Connections: USB Type-C SKU: S7812115

[manfrommars2049]

Dark Sci-fi Fantasy movie stills collection(stablediffusion 1.5) via sciencefiction

[pedaloftheday]

Today’s #pedaloftheday features the Dumble/ZenDrive-inspired Warmdrive Overdrive from our friends at @warmaudio!!🤘🎛 Review on our website / Demo on YouTube - please Like, Share, Repost, Follow and Subscribe to all things Pedal of the Day to show your support - cheers!! . . . . #guitarpedals #guitareffects #effectspedals #pedalsandeffects #gearnerds #pedalnerds #fxpedals #pedaldemo #pedaldemos #warmaudio #warmdrive #overdrive #overdrivepedal #dumble #zendrive https://www.instagram.com/p/CqF8iySgnSN/?igshid=NGJjMDIxMWI=

[petezoom]

#TBT to 2011 🤭 #voxamps #PaulReedSmithGuitars #PrsGuitars #Zendrive 1988 #Multifoil https://www.instagram.com/p/BuJ4SGsg0uK/?utm_source=ig_tumblr_share&igshid=dgg84au3z39z

[tomtoneefx]

Yin Yang Overdrive Dumble in a Box #tomtone #yinyang #dumble #robbenford   #guitarfx #fxpedals #fxsound #drive #effectspedals #zendrive #guitareffects #efeitosdeguitarra #pedaisdeefeitos #Stompboxes #boutiquepedals #customshop #stompbox #custompedals #customeffects https://www.instagram.com/p/CkisWtwO01w/?igshid=NGJjMDIxMWI=

[autonewsinsure]

Zendrive spins out commercial insurance startup

Zendrive spins out commercial insurance startup

Insurance telematics provider Zendrive has announced the spin-out of a new commercial insurance company, Fairmatic, which will leverage Zendrive’s data for commercial fleet insurance. Zendrive co-founder and chief technology officer Pankaj Risbood has been appointed as Zendrive CEO, with co-founder and CEO Jonathan Matus transitioning to become chairman of the board and founding CEO of…

[analyticsindiam]

How Zendrive Is On A Mission To Make Roads Safer Using Artificial Intelligence

How Zendrive Is On A Mission To Make Roads Safer Using Machine Learning More than 1,50,000 people are killed in road collisions each year in India, which amounts to 400 deaths per day. If one were to ask if deadly road collisions can be avoided with technology, and the answer is yes. One such company is Zendrive which offers its technology solutions to make driving safer for users and help insurers save money in the process. The San Francisco and Bengaluru-based startup recently closed its Series B funding round at $37 million, from XL Innovate and Hearst Ventures and previous investors including ACME Capital, BMW iVentures, NYCA, SignalFire, and others.  According to Frost & Sullivan, Zendrive’s predictive risk model is six times more accurate than the industry average. This is because the volume of data the company owns is huge, and increases by 11 billion miles worth of data each month. The company’s risk model has also been trained extensively using advanced machine learning algorithms. Analytics India Magazine connected with Pankaj Rasbood, co-founder and VP Engineering Data at Zendrive to dig deeper about the company, its work culture and innovation.  What is Zendrive trying to accomplish in the road safety area? Pankaj Risbood: This is a company with a mission to make roads safer. We try to understand how people drive their vehicles and using the insights that we gather from the behaviour analysis, we are able to do a lot of things. We not only help people to become safer drivers but also understand the kind of risks they have while driving. Then, use those insights for insurance premium, for predicting losses. We can also detect collisions when they happen all of this we determine using mobile phone data without any hardware. So, make the deployment easy for our customers.  When it comes to collecting data for making travel easy and convenient for users, what kind of trends do you see in that market? Pankaj Risbood: It’s really about human behaviour at the end of the day. All of our culprits of driving distracted and this is a problem which has come up just in the last 10-15 years or so. Today, 25% of all road fatalities are caused by people being distracted on their phones while driving. So, being able to understand what is at the root of that, we can educate people to be safer on the road. It’s something that we find really important. It’s a difficult and scary moment for anybody when they are in a collision on the road. Being able to able to detect that autonomously and get them to help if they need it and saving lives in the process is something that we are proud of at Zendrive.  Could you tell us about Zendrive’s technology solutions? How are you leveraging AI to make driving safer? Pankaj Risbood: The entire premise of Zendrive is about analytics, machine learning, artificial intelligence. We are using the data that is available from smartphones through various sensors. But that’s just data. All the intelligence on top of that which is to understand what patterns in data are telling us that somebody is using their phone, what patterns are telling us that somebody is driving well above the speed limit, what patterns are telling us that somebody is breaking the rules, those are the kinds of intelligence and insights that we derive out of sensor data. We do a lot of sensor processing, we build a lot of classification and regression algorithms for building driving behaviour insights.  We are also using these insights to generate scores and profiles for the drivers. That involves a lot of statistics, a lot of machine learning again to understand who is risky. That risk needs to be priced in insurance pricing, factored into the claims and so on. We use AI/ML pretty much throughout the entire company and all of our based off it.  Tell us what new is happening at Zendrive in terms of innovation.  Pankaj Risbood: We are always investing in exciting technologies because ultimately it’s a tech product that is serving a broad segment of the market. Just last month, we announced the launch of a new product feature called full stop whereby we are automatically detecting if an individual is not stopping at a stop sign but running over it. Now, you can imagine running through a stop sign is quite dangerous because cross-traffic can hit you and cause collisions. We are able to detect those things autonomously and automatically. Doing things like this requires being able to process data at scale.  We have petabytes of driving at this point in time. This is geo-spatial and temporal data at the same time. So, processing the data, being able to derive insights is something we are doing at scale. Deep Learning, the newer advances in neural networks is something we are exploring. We do quite a lot of CNN and LSTM, and those kinds of things given the temporal nature of our data. We are also investing in newer technologies which are privacy-preserving- things like Federated Learning and so on. We see those as the future where the world will eventually gravitate towards.  What kind of skills are you looking for your hiring process? Pankaj Risbood: We have a 20-people data science team right now, which is growing and expanding all the time.  We look for people with core statistics and machine learning background, people who have done either a Master’s or PhD in Deep Learning, statistics, artificial intelligence, and similar domains. We certainly look for people with strong coding abilities because ultimately it’s a product, it’s not research. So, being able to deliver the product is important going through the rigours of production deployment. And above everything, we look for people who are curious. Solving a problem like road safety is not easy. It’s one of those problems which has not been explored much. So, we look for people who have a lot of curiosity to go deeper and understand human behaviour so we can model that and use that in the solutions that we are providing.  Business is really important but at the end of the day, there is a social component to it which is- hey we want to save lives on the road. People who are motivated and excited by that kind of mission is something we want to have.  Tell us about the learning and training programs inside Zendrive. Pankaj Risbood: In the technology industry now, there is no point when you can say I know everything. There is always new stuff coming in. Even if you know a lot, there is always a need to learn and re-learn new things. Even the senior staff at Zendrive — the principal data scientists are always looking to learn about new things. At the same time, the engineers and data scientists we hire fresh out of college, we take them through a rigorous program of coaching and training in the first year, making sure they understand stuff so that they learn two things — one sort of the tricks of the trade what skills are required but more importantly how to learn in the first place because our education system doesn’t really teach you that. We think about a career as continuous learning and that’s something we try to imbibe into everyone. Read the full article

[pkrul]

Made some changes again... . . . #pedalboard #guitareffects #effectspedal #keeley #toneworkstation #hermidaaudio #zendrive #hermida #tcelectronic #polytune #polytune3 #halloffame #hof #flashback #delay #flashbackdelay #corona #chorus (bij Peter Krul | Studiofotografie) https://www.instagram.com/p/BsTRgFSFIlQ/?utm_source=ig_tumblr_share&igshid=rew6cbnkptgv

[fox-wolf-tail]

My pedalboard. But I made a mistake in how to connect in only one place😅

[lucasjoelten]

Writing more new stuff. Taking a pass at soloing over newer sonic landscapes. Thanks @c00mbs_ for all the knowledge you passed my way. And thanks @manucampart for the amazing t-shirt. Working on a new album so stay tuned! 🤘🏻🍾😎 . . . #lucasjoeltenplaysblues #jmsignaturestrat #waltgraceamplification #zendrive #newsongs #newalbum #newyear2017 #guitarist #mellowblues #thebends #grooveandponder #lucasjoeltenmusic (at Miami Beach, Florida)

[pedaloftheday]

NEW DEMO VIDEO Vick Audio Tree of Life Overdrive

[effectsdatabase]

Last week's top 20 videos (2023, week 11)

Top 20 videos last week (March 12-18)

Bad Monkey vs KLON, JHS Morning Glory, Zendrive, Fulldrive, and ODR-1 (by JHS Pedals)

White Light Legacy Reissue Overdrive Guitar Demo (by EarthQuaker Devices)

EarthQuaker Devices White Light Reissue Overdrive (by ThePedalZone)

Deep Trip Hellbender vs. Hellbender ?lead mod? (by Deep Trip)

Hawaiian Pizza and a Strat - Caroline Guitar Co. #shorts (by Caroline Guitar Company)

Boffin FX Blades Heavy Chords Demo ?? www.boffinfx.com #guitar #heavymetal #effectspedals (by Boffin FX)

Neunaber Audio | Neuron Gain Intelligence #SHORTS (by Neunaber Technology)

JAM pedals | Dyna-ssoR (by JAM Pedals)

ADORABLE AFFORD-A-BOARD! - Pedals from Effects Bakery - Fuzz, UNIVIBE?, Reverb, Delay & Trem *cute!* (by 60 Cycle Hum)

Vintage MXR Distortion + Repair! Gray Bench Electronics (by Gray Bench Electronics)

Boss FB-2 Demo in 30 Seconds (by Cameron Johnson)

Tech Tips: Cali76 Compressor on Acoustic (by Origin Effects)

Gibson 335 / Keeley Dark Side (by Dmitry Andrianov)

1968 Shinei Univibe meets 1969 Fender Twin Reverb =// (*!*) (by Viva Analog)

#Boss #metalzone MT-2 on #bass (by RoeyHaviv)

dkpedals : An Introduction and Reboot (by Dk Pedals)

Devi Ever: Cymru Bass Fuzz #shorts (by Amateur Effects Reviews)

DOD Envelope Filter 440 #digitech #guitarpedals #pedalboard #guitarfx (by Chuck Levin's Washington Music Center)

7 AGUILAR PEDALS... Let's try them out!! (by BassTheWorld)

Digitech?s Unsung Hero: the FreqOut! #stompboxsaturday #digitech (by SeanPierceJohnson)

Overviews of the previous weeks: https://www.effectsdatabase.com/video/weekly

from Effects Database https://bit.ly/3Z6gHva