#tech projects

[techtease]

PiSquare: RP2040 & ESP-12E-based board for all Raspberry Pi HATs

PiSquare is a compact, wireless communication board designed for Raspberry Pi that enables you to wirelessly connect and communicate with multiple Raspberry Pi HATs including SPI, I2C, and SPI HATs. It is based on two powerful components:

⦁ The RP2040 microcontroller (the same chip used in the Raspberry Pi Pico). ⦁ The ESP-12E Wi-Fi module for seamless wireless communication.

By using socket programming, PiSquare can wirelessly interact with Raspberry Pi HATs through TCP/IP communication, allowing you to connect as many devices as you need, without worrying about physical stacking or GPIO conflicts.

Key Specifications:

⦁ Microcontroller: Raspberry Pi RP2040

Core Architecture: Dual-core ARM Cortex-M0+ microcontroller

Clock Speed: Up to 133 MHz

Flash Memory: 2MB onboard QSPI Flash (for program storage)

RAM: 264KB SRAM

GPIO Pins: 26 multi-function GPIO pins with support for PWM, SPI, I2C, UART, and other peripherals

⦁ Wi-Fi Connectivity: ESP-12E

Wi-Fi Standard: 802.11 b/g/n

Wireless Frequency: 2.4 GHz

Wi-Fi Chipset: ESP8266 (with 4MB of onboard Flash)

Data Rate: Up to 72.2 Mbps (with 802.11n support)

Communication Interface: UART (Universal Asynchronous Receiver Transmitter)

⦁ Wireless Communication via Socket Programming

Protocol: TCP/IP (Transmission Control Protocol/Internet Protocol) via socket programming

Connection Type: Full-duplex, bi-directional communication

Network Type: Local Area Network (LAN) or Wi-Fi based network for device communication

Number of Supported Devices: Configurable for communication with multiple (n) Raspberry Pi HATs over Wi-Fi without the need for physical stacking

Socket Layer: Raw socket-based communication for sending and receiving data over the network

⦁ HAT Compatibility

Supported Protocols: SPI (Serial Peripheral Interface): Full-duplex, synchronous communication for connecting peripherals

I2C (Inter-Integrated Circuit): Multi-master, multi-slave communication for sensors, actuators, and peripheral devices

GPIO-based HATs: Supports a variety of devices and sensors with GPIO pin control

Pin Multiplexing: Flexible I/O pin assignment allowing for easy configuration of multiple communication protocols simultaneously

Addressing: Supports unique addressing for SPI and I2C devices to avoid conflicts

⦁ Power Supply

Voltage: 5V DC ±5% (typical operating voltage range)

Power Consumption: Low-power operation suitable for remote or battery-powered applications

Regulation: Onboard linear voltage regulator to provide stable power for the microcontroller and Wi-Fi module

⦁ Form Factor

Dimensions: 65mm x 30mm x 20mm (compact design suitable for integration into small devices)

Mounting: Compatible with standard Raspberry Pi connectors (via external interface) without the need for physical GPIO stacking

⦁ I/O and Expansion

Interface: UART, SPI, I2C (for communication with external peripherals)

GPIO: 26 GPIO pins for signal input/output, including support for digital, analog, PWM, and interrupts

Use Cases

Here are a few ways PiSquare can revolutionize your Raspberry Pi projects:

Multi-HAT Robotics: Easily connect multiple HATs for motor control, sensor arrays, and communication modules in a wireless setup.

IoT Projects: PiSquare can communicate with several sensor HATs in remote locations, sending data back to a central Raspberry Pi for processing or cloud storage.

Home Automation: Connect a variety of home automation HATs wirelessly, creating a smart home system that’s efficient and scalable.

Distributed Sensor Networks: Set up multiple sensors across a large area without worrying about physical connections or pin conflicts.

The Pisquare RP2040 with the onboard ESP-12E Wi-Fi module is a powerful and compact solution for anyone looking to build wireless IoT projects. Its support for multiple HATs, including SPI and I2C, makes it versatile enough to handle a wide variety of peripherals, while its ability to implement socket programming provides you with the flexibility to create robust networked applications.

Whether you're creating a smart home system, an industrial IoT device, or a robotics project, the Pisquare by SB Components can be the perfect foundation for your next creation.

[stone-cold-groove]

NASA’s Echo 1 communications satellite - 1960.

[lakeshorediving]

Listen I love Dr. Aaron that went to med school. But I cannot lie, Nurse Aaron compels me, calls to me, sings to me from the depths of the sea.

[galehowl]

few quick sketches of the fourth partner Digimon in Aurora - Floramon, and her adult form, Astermon - a subspecies of Sunflowmon!

Her full evolution line is Floramon -> Astermon -> Toropiamon ( subspecies of ) -> BloomLordmon; though she remains a Data attribute through all of the forms.

She's also one of the younger Digimon in the group, and is quite boisterous and an outdoorsy person. Unsurprisingly, she loves nature and has quite a lot to say about how humans treat it, but also willing to help fix the state of things.

[poorly-drawn-mdzs]

Dungeon Meshi: The RPG

[unpretty]

on the one hand oversharing will probably come back to bite me in the ass eventually. on the other hand it's very validating to see that kind of response to what i consider the least bad things about scabsy. perhaps occasionally bitching to the groupchat or in locked fedi posts is not giving them an unwarranted amount of my attention, actually.

[heyclickadee]

Still slowly doodling things

[archivewriter1ont]

👋👋ATTENTION BAD BATCH FANDOM🪧🪧 We have Echovember, and it's been amazing! But I was wondering if we could give the original four batchers their month, too. What if we started off 2025 with four months of batcher-centric content, corresponding with the last digit of their CT numbers? Here is my idea:

Hunter January since he's CT9901 Tech February (CT9902) Wrecker March (CT9903) Crosshair April (CT9904)

This is my plan anyway. My goal for Echovember has been one fic posted each week of the month, so I will probably keep it the same for the others as well.

Share if you like the idea, or comment if you have a better one or any suggestions! I'm pretty new to any kind of fan community so I appreciate all advice, comments, and feedback!

[cf-12]

Unreleased (2018?)

[t00thpasteface]

absolutely sick and twisted to see a community get recommended to me for queer people to "express themselves" with ai. politicians all across the globe coordinate plots to eradicate our communities and yall want to outsource your own creative thinking to luxury software products? what the hell is wrong with you?

[atomic-chronoscaph]

Project G stereo - Clairtone (1964)

[wannabehistorianandauthor]

BOOST!!!

[sandwhich-lady]

I am begging to know how the projections work in the dome in dimension 20. Like specifically in never stop blowing up, who controls which projections come on and when? Is it brennan? The projections crew? A combo of both? Are the panels an led wall or are they using actually projectors? How many?? How small are those projectors? How big? How are those placed for the image to flawlessly cover the whole dome? Was mapping that a nightmare? Do they use qlab?? How goddamn powerful are those projectors to have such high quality and brightness? Is it a bunch of really powerful short throw projectors? Do they project from the back or the front? How do they do that? I want that job how does one get that job. Anyway shout out to all the tech/art elements of never stop blowing up and dimension 20 in general yall rule

[agent-gladhand]

Niche crossover that's been a-rattlin' in my head since I finished Ruina last year, good excuse for brush testing