Shared Projects

Tiny STM32F042 USB board. Source: https://github.com/dword1511/stm32-tiny042

Daughterboard for Adafruit 16-Channel PWM / Servo HAT that enables connection with RGB LEDs, ADS1015 12 Bit, 4 Channel ADC, Monochrome 128x32 I2C OLED graphic display, and Adafruit 9-DOF IMU Breakout - L3GD20H + LSM303.

The project has been used in http://duckietown.com/

Modified GC3 command station

BaseBoardRevC

Shark DSP Development board

https://adelectronics.ru/2016/11/08/отладочная-плата-esp8266-rs-485/

http://www.esp8266.com/viewtopic.php?f=152&t=8777

Added TPS61240 5V booster and 5 V rail for rc radio, NCP161 3V3 LDO, and connected EM7180 interrupt to K20.

For more details on this PCB design, see my article at:

https://sites.google.com/site/wayneholder/inexpensively-program-your-arduino-via-bluetooth

STM32L4 microcontroller programmable using Arduino IDE.

Micro.Modem.rev_a1

2 layer board of 1.04x0.95 inches (26x24mm). $4.90 for three.

Atmega328p-based 1200 Baud AFSK radio modem

For use with MicroAPRS and other amateur radio packet radio protocols

MicroModem MicroModem is an open-source implementation of a 1200-baud AFSK / Bell 202 modem on the popular ATmega328p microprocessor. MicroModem can be used for things like ham radio APRS, AX.25, TCP/IP over SLIP, experimentation with mesh-networks, long-range wireless communication with sensors (Or friends! Or strangers!). It basically comes in two flavors: Prebuilt or DIY.

It is simple enough that, if you have some basic electronics experience, you can understand and build it yourself with a few components and an Arduino. You can also get a more advanced and prebuilt, fully tested MicroModem directly from original designer. He manufacture them personally, to the highest quality. (link/store at his site)

Please note that the resources listed here for building your own MicroModem are for an earlier, more simple version, than the one he currently offers for sale. While the two modems are functionally identical, the version he offers for sale has some technical refinements, and is implemented as an integrated board with MCU, USB and everything on one board, measuring only 3×5 cm. The DIY version is a board with all the external circuitry needed for turning a standard Arduino (or compatible like Microduino) into a MicroModem!

Per original designers request…link to the Rev 1 Documentation for the project

Unit above is the MicroModem, the Microduino-Core/Microduino-Core+ module and the Microduino USB TTL module stacked There is also a combined Microduino Core USB that is an all in one unit

https://www.youtube.com/embed/L-LeizF6ixY

2nd go.

This is part of our “Modular Dev Board” system for the Eurorack format. We use these internally for rapidly prototyping/testing modules before committing to final prototype modules.

This module features 3.5mm SC330 jacks (you can find these at Erthernvar).

first go

This is part of our “Modular Dev Board” system for the Eurorack format. We use these internally for rapidly prototyping/testing modules before committing to final prototype modules.

This board contains switches and LEDs.

This is part of our “Modular Dev Board” for the Eurorack format. We use these internally for rapidly prototyping/testing modules before committing to final prototype modules.

This module uses BI P260T potentiometers. Some other vertical mount pots may work but have not been tested. Pins are 2.54mm pitch.

This is part of our “Modular Dev Board” system for the Eurorack format. We use these internally for rapidly prototyping/testing modules before committing to final prototype modules.

This board allows for custom circuits to be constructed on the 2.54mm pitch pads - like a vector board.

1 Bit Relay Based ALU : contact me for parts list

r_0_2