Speeduino Open Source ECU: Arduino-based engine management

The Speeduino project is a flexible, fully-featured engine management system (EMS aka ECU) based on the low-cost open-source Arduino platform. It provides the hardware, firmware, and software components that make up an engine management system, all under an open license. With over 1,000 installations, Speeduino has evolved into a product that meets the needs of the hobbyist and enthusiast community without the price tag of a traditional aftermarket ECU.

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Design of talking color detection system based on Arduino

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Open source HC-05 Bluetooth module and Arduino entry reference solution

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Carbon dioxide and dust monitor based on Arduino Nano RP2040 (PCB + code)

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Smart robot dog based on Arduino nano (schematic diagram + PCB)

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DIY Portable 1.8V Power Supply (Reference Design)

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Arduino Pro Mini 328 based washing machine timer reference

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Contactless face recognition access control system

In the epidemic environment, people don't want to touch things outside, so we create a face recognition access control system that does not require contact. When it is detected that a person is approaching the door, the face recognition device is awakened to save power consumption. When the face recognition passes, the door is controlled to open.

Schematic PCB

Ardufocus-DRV8825: Precise open source focus controller

Ardufocus is the only OSS/OSH controller to support two independent focus motors, the high-resolution mode allows for stepwise sub-micron movements, multiple acceleration profiles, and it never forgets the focuser position between restarts.

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Robot control board

2 Layers PCB 54.6 x 90.2 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

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NanoClon 0.01: used to assemble mClon type robots

This circuit has everything you need to assemble a mClon-style robot, without the need to find the missing Arduino circuit from RobotDyn used in the ShieldClon version.

Components can be SMD or THT, except the boost circuit/lithium battery charge controller is SMD, the 1206 and 0805 components are larger than the usual 0603 and 0402). You can choose not to solder the boost smd component and just solder the Bat-Vcc selector on the bottom to use the power bank.

Schematic PCB

posture correction robot

It's common for computer users to bend over in front of a screen, which can eventually lead to back problems. There are various gadgets on the market that solve this problem by constantly reminding users to sit up straight, but most of them are not fun. So I made a fun little tool for this problem.

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POGO ISP Micro: Small and reliable programming adapter for AVR ISP

Do you need a small ISP to program your onboard AVR device? POGO ISP Micro is the right solution!

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LEDBOY: A game console without an LCD screen based on Attiny 1614

This project started with a conversation with a friend and apparently how the LED based consoles that existed in the 70's have never been revisited

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Arduino development board GIGA RI WiFi based on STM32H7

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ReflowMaster: open source reflow master control based on the magic oven (schematic, PCB, gerber, source code, etc.)

Reflow Master Pro is designed to work in any oven - no algorithm adjustments required! That said, if you really want to tweak, you can switch from the classic Reflow Master algorithm to PID control and adjust your settings to your liking.

Schematic PCB

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.

Schematic PCB

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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Programmable-Air: Portable hardware kit for experimenting with pneumatic devices

Programmable-Air is a hardware kit that allows you to inflate and deflate objects. It has everything you need to get started with pneumatics and inflatables, including high-pressure and vacuum pumps, valves, and onboard pressure sensors. Pneumatic technology opens up a world of possibilities for manufacturers to explore: Make a vacuum placement machine Blow up a balloon so that its size represents data Make a soft robot walk Use a syringe as a linear actuator

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ERASynth Micro: USB-powered, low-cost, open-source RF signal generator

ERASynth Micro is an open source signal generator with impressive features. Affordable for everyone including builders, hackers, students, amateur radio and SDR users. The ERASynth Micro is powered via the USB port and has an LCD interface for stand-alone use without the need for a computer or phone. It can generate low phase noise RF signals from 12.5 MHz to 6.4 GHz through a dual PLL architecture.

Schematic PCB