Shared Projects

The brains for a necktie that plays classic Tetris. Now 100% done.

Breakout to test the LSM6DSO and its finite state machine and machine learning capability as a general motion analyzer. Arduino development to support the board reposited here.

A simple board for STM32L0x1FxP6 chips, with RFM69CW radio and power options (CR2032/battery direct, or through ultra low current voltage regulator).

It has the usual things (LED, reset+boot0 buttons, footprint for a ferrite to clean up analog power, footprint for a 32768MHz crystal, access to SWD, FTDI header for programming).

Board exactly fits Hammond 1551G plastic boxes (e.g. 1551GBK).

More info in a blog post.

A board designed for MSP430G2553 (DIP-20), RFM69CW radio, and a power source (battery or otherwise). Fits Hammond 1551HBK box. Just add a sensor and some (forth) code! Longer info here.

Notes:

• Any other pin compatible MSP430 would work as well, but to run Mecrisp Forth, 16kB flash is needed. (The radio chip select line is connected to P2.0, so to use it on 14 pin chips, connect to one of the available P1.x with a wire.)

• There is a footprint for a cylindrical 32768Hz crystal; this is needed for low power modes.

• There is a little prototyping area; all unused MCU pins are routed out.

• Hammond 1551HBK is a black box, dimensions 60x35x20mm. They also have a gray and translucent blue versions, called 1551HGY and 1551HBU.

• The intention is to use the CR2032 holder footprint to mount the holder over the radio, and use the battery to directly power the MCU and the radio. But, there is also an option to solder in a MCP1703T voltage regulator (plus 2 stabilising capacitors, 0805), and connect a power source to one of the ``VIN pads. For this, one can mount a JST connector on the bottom side (works with LiPo batteries).

• Once the voltage regulator is mounted, it is possible to connect/disconnect it to the rest of the circuit with the solder jumpers. It is also possible to connect VIN with VDD directly.

• The TX/RX, RESET, TEST pins, together with GND and `VIN pins, are routed to an UART/FTDI 6 pin connector on the side of the board. With the ‘usual’ arduino-style USB-to-UART converters, RESET should match the DTR signal, and TEST the CTS/RTS. (Note that you’ll need 3.3V-level signals!)

Adapter for using PC Engine Japanese HuCard based games in TourVision V4 arcade system

ATF22LV10C test points breadboard adaptor

5 channel capacitive sensor board for XPRO boards

My first PCB :)

cartridge for eproms of 27c256 for two Banks of 16k by ROM

Capacitive touch 2D plus 5ch slider test for XPRO

basic attiny85 dev board with reset buton, ISP header and A2 A3 pins

based on this instructables project : https://www.instructables.com/id/ATtiny854525-LED-dice-Super-simple-and-CHEAP/

HP DPS-600 PSU Control Pin Adapter

Breaks out PSON, POK signals to a standard 0.1" pitch pin header. Connects control board current returns to ground and pull fan pin to ground. The other signals are left floating.

The ground pad is to connect a wire to a PSU ground point.

This board breaks out a USB Type-C plug to pairs of SMA connectors for each of the super speed pairs, a USB micro B connector for D+/-, and an 8 pin header for the rest of the signals.

• Design files on github
• Hackaday.io page

Project Information Here