Shared Projects

Current sensor board pair using TI’s INA250 and INA21x for high and low current measurements. Sensor board mounts up close to circuit under test, larger board provides connection for power and output signals, where an FPC cable connects the two.

Note: The holes for the banana plugs are a tad too large but will still hold in place. The footprint used for the INA21x was a tiny bit too large, so it doesn’t sit quite right on the pads but it can still be soldered into place.

Uses ESP8266

Just a small dual linear power supply using LM78Lxx and 79Lxx chips. Very flexible… just use a center tapped transformer with enough voltage for your regulators, and appropriate capacitors.

Interface board to easily use an ESP-01 with RGB LED strips. I use this for a TIX clock. Board (and LEDs) powered with 5v DC. A 3.3v regulator powers the ESP-01. I also use a mosfet level converter for the data line, though I don’t know if it’s absolutely necessary… better safe than sorry though.

U1 - TPS732xx (whichever one is 3.3v)
Q1 - BSS138 mosfet
R1,2,4 - 10k
R3 - 300-500 (not critical)
C1 - 10uf
C2 - 0.1uf (I've used 1uf for both and it works)

Light bar for under my desk cupboards. I have a bunch of super bright white LEDs that I need to use up and these will help throw light around the desk.

With a 12v supply and 47 ohms for the resistor, I was reading 8ma current draw, and the LEDs were pretty bright.

Apparently there’s a bug with the board outline code so it displays funny on the web site - the 9 boards I ordered all came out fine.

A simple 220uF capacitor Array.

Basic learn to solder board for a workshop at RIT.

WALT Latency Timer http://github.com/google/walt

Arduino ICT probe head specifically for the 8080 CPU.

fil pilote

With regulator

A controller board for a clock based on the ESP8266 uC. It will control a 60x WS2812 LED ring and turn it into a clock. There are also three analog outputs to make an Analog Panel Meter clock (the software isn’t written for this yet.)

This is an implementation of Jon Fuge’s wonderful Wol Clock project on Instructables: http://www.instructables.com/id/Wol-Clock-ESP8266-12E-60-LED-WS2812B-Analogue-Digi/?ALLSTEPS All software credit is his. I’ve modified it to use the -01 version of the ESP8266, and added the analog bits.

It uses the venerable (and cheap!) ESP8266-01 boards, about $2 from eBay: http://www.ebay.com/itm/171907296150

An example of the 60 WS2812 rings: www.ebay.com/itm/131594455055 There are several options available, they’ll all work.

All other parts are non-critical.

See https://www.youtube.com/watch?v=3o8EZLghdRY for the layout of this board.

This board is not my design

This is the PCB for http://www.dl9sec.de/gbacart/gbacart.htm

Quarter-sized version of the PulseFit. Made with miniaturization in mind. Power it from a simple voltage source (3V-6V) and read the pulse from an Arduino or any other microcontroller.

https://github.com/hoilett/Pulse-Sensor-with-Auto-Threshold/tree/master/PCB_Designs/PulseFit-Mini

Converts TC-2030 to nRF5 DK (P20) SWD. Use 6-pin, 2 row shrouded male header for P1 and 6-pin, 1 row female header for P2.