A low-profile version of full-featured software radio based on Raspberry Pi Pico (fully open source + detailed explanation)

With just a Raspberry Pi Pico, an analog switch and an op amp, you can build a powerful SDR receiver covering the LW, MW and SW bands. Capable of receiving signals from halfway around the world.

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Blimpduino-2 - open source blimp (source code and schematics, etc.)

Bllimpduino 2 is a very low cost open source autonomous airship. It consists of Arduino M0 airship controller board and on-board WIFI and laser sensors. Two vector differential thrusters and one lift thruster. The design is simple, yet exciting.

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Arduino dual combination: based on iMX8 and STM32H747 development boards

Portenta X8 is a powerful industrial-grade SOM with a pre-installed Linux operating system onboard and can run device-independent software thanks to its modular container architecture. Securely perform OS/application OTA updates with onboard Wi-Fi/Bluetooth® Low Energy connectivity. It is basically two industrial products combined into one, with a power of no less than 9 cores. Utilize the Arduino environment to perform real-time tasks, while Linux handles high-performance processing. Portenta X8 features NXP® i.MX 8M Mini Cortex®-A53 quad-core up to 1.8GHz per core + 1x Cortex®-M4 up to 400MHz, and STMicroelectronics STM32H747 dual-core Cortex®-M7 up to 480Mhz +M4 32-bit Arm® MCU, up to 240MHz.

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Starfish: an open source project for motor control board using component pick-and-place of RP2040 and TMC2209

Starfish is a pick and place machine control board built on the Raspberry Pi RP2040 microcontroller and Trinamic TMC2209 motor driver. This control board has some similarities to a 3D printer control board, but it has some unique issues to solve—including controlling solenoids and communicating with vacuum sensors. All board information is open source, and detailed explanations are provided to help you copy successfully.

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Raspberry Pi microcontroller 100Msps dual-channel oscilloscope software and hardware are fully open source, including detailed instructions

The current design solution uses an 8-bit ADC chip ADC08100 and a 100M bandwidth front-end analog circuit. In fact, if you want to play, you can improve the indicators and use AD9288 or the domestic alternative MXT2088. One chip has two channels and achieves a 250M sampling rate through rapid alternating sampling.

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Tah: Arduino-compatible BLE platform, which can be used as beacons, microcontrollers and HID devices (including schematics, source code, etc.)

Tah - Control anything from your smartphone, open source, Arduino-compatible Bluetooth Low Energy (BLE) platform that can be used as a beacon, microcontroller, and HID device.

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PiEEG: A brain-computer interface based on Raspberry Pi that can measure EEG, EMG and ECG biological signals

A Raspberry Pi board is used as the processor to process eight brain electrical signals in real time.

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DIY handheld gamma ray spectrometer based on Raspberry Pi Pico

Although Geiger counters can be used to detect amounts of radiation, and with some tricks can also differentiate between the three types of radiation (alpha, beta, and gamma), their use is limited in identifying radioactive materials. For this purpose, gamma-ray spectrometers come in handy.

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ESP32+RP2040 two-in-one design board (schematic and PCB)

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TJBot, a DIY cardboard robot open sourced by IBM

Maker Kits are a set of DIY open source templates for building things using IBM AI services in fun and easy ways. IBM TJBot is the first maker kit in the series. You can 3D print or laser cut the robot's body and then bring it to life using the resources provided by IBM! Additionally, you can unleash your creativity and create new recipes, using any of the available IBM AI services to bring TJBot to life! TJBot only works with Raspberry Pi.

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The early mobile phone system PalmOS was ported to Raspberry Pi RP2040

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Idiotware Shield: Adapted to Arduino, a simple and fast IoT learning platform (including schematics, PCB, source code, etc.)

Idiotware Shield is a learning platform that can quickly implement hundreds of Arduino projects, whether you are a novice or an expert. The Idiotware Shield is the Swiss Army Knife of Arduino shields, with a host of integrated inputs and outputs and options for connectivity and expansion.

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Using Raspberry Pi Pico, a miniature Mars probe with an arm (schematic, PCB, 3D printing, source code, etc.)

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Based on STM32H747, Arduino® Nicla vision development board schematic

Arduino® Nicla Vision is a ready-to-use standalone camera for analyzing and processing images at the edge. It's suitable for asset tracking, object recognition and predictive maintenance thanks to its 2MP color camera, smart 6-axis motion sensor, integrated microphone and distance sensor. Quickly implement sensor nodes that send collected data to the Arduino® Cloud (or third-party vendor service) via integrated WiFi/BLE connectivity.

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Arduino development board GIGA RI WiFi based on STM32H7

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Adjustable 300v high voltage USB PD power supply, based on Raspberry Pi RP2040

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120-channel logic analyzer based on Raspberry Pi Pico

The Raspberry Pi microcontroller 24-channel 100Msps logic analyzer has been upgraded to support 120 channels.
Daisy chaining of five devices is supported, allowing capture of 120 channels. Includes performance improvements and visibility improvements to the rendering engine, more samples in the screen, automatic selection of capture modes, editing capabilities, and more. The playability is getting higher and higher.

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PYPRCA: python programmable open source calculator based on Raspberry Pi PICO, developed using circuitpython

Pocket calculator style general purpose programmable device (computer) ideal for learning programming and improving building/soldering skills.

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Arduino UNO Mini Limited Edition Open Source Information

Open source material for the Arduino UNO Mini Limited Edition.

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High resolution magnetic rotary encoder based on RP2040

This is a mature development board combined with a magnetic rotary encoder, which uses a Raspberry Pi RP2040 microcontroller with a base resolution of 36, expandable to 36,000 steps per revolution.

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