Shared Projects

WeMos adapter for RFLink project + I2C OLED See github description for more information
See my blog for some other projects

Board to go from 20-pin JTAG to 6-pin SWD

[UPDATE: 2016-06-02] Uploaded KiCad PCB file from GitHub repo: https://oshpark.com/projects/afSmusg1

THIS IS NOT TESTED! Kumar: you can get the gerbers from https://goo.gl/kku0VM (drill is in a separate folder), although the folder says “rev1” but they’re for v1.1

Binary converter for 12v car lights. Used to convert digital (‘ABC’ wires) output from GM transmission to directly power 12v dash lights (P,R,N,D,2,Low,…) in older cars.

IC1: CD4011BE

IC2-4: CD4023BE

R1-8: 1k

R9-11: 4k7

Q1-8: 2N2907

Headers are 5mm screw terminals (though it may be just as easy to solder wires directly in). J16: A/B/C (binary inputs). J17: power and ground. J18-20 power outputs.

Can use jumper J1 to pull inputs high (as I needed) or low.

Can use jumper J3 (and switch 2N2907 transistors to 2N2222) to make this a low-side output switch.

Frequency Generator Backpack for the Texas Instruments MSP-EXP430FR6989. See write-up at 43oh.com: http://forum.43oh.com/topic/9402-ad9850-frequency-generator-backpack/

Connector board for connectorizing coax cable to SMA connector

This is a breakout board for all PIC16Fxx and PCI16Cxx 18 pin. With the option of a RC oscillator, a ceramic resonator or a crystal

A simple nixie tube clock

BLEKey 1.2

v4 with resistors

LED indicator to show how close to the wall you parked

STL Spacer Module PCB

STL LED Module PCB

4 drivers per board for precision circuits for AOM drivers. Need 6x total.

Overview:

Breakout for the Teesny 3.2 and Teensy Audio Board.

Features:

• MIDI-OUT and Opto-isolated MIDI-IN
• Line Level Shifter for +5V output
• CAT6 connector for use with OctoWS2811 Library
• dedicated port and usb power for single neopixel strand (space for 0.1" Molex 22-23-2031 locking header)
• two encoders
• two pots
• LED on PWM pin
• filtered DAC out on tip of 3.5mm jack, header for cap shorting pin for non-symmetric output
• audio board line-in/line-out
• analog in on A10/A11 to use ADC0/ADC1 for simultaneous sampling
• accessory port for pins 29, 30, 33 (space for 0.1" Molex 22-23-2041 locking header)
• too much unpopulated board space
• smiley face

Components:

• Midi Jacks – CUI SDS-50J
• Midi Opto-Isolator – Sharp PC900 (e.g. PC900V0NSZXF)
• Line Level Shifter – TI SN74AHCT245N (PDIP Version)
• CAT6 Connector – Amphenol RJHSE-5080-02
• Encoders w/ switch – Bourns PEC-11L or PEC-11R (e.g. PEC11R-4220F-S0024) – many others should work.
• Potentiometers – Bourns PTV09A series (e.g. PTV09A-4020F-B103) or Alps RK09L series (e.g. RK09L1140A2U)
• 3.5mm connectors – Kycon STX-3100-5CB or equivalent.
• Teensy SMD breakouts – Molex 15-91-2140
• Headers – any 0.1" headers…I use the locking Molex KK series indicated above!

Notes:

• Must remove Audio Board surface mount cap connected to pin 15/A1 for OctoWS2811 library to function.
• SD Card on Audio Board will not work.
• Make sure to align breakout SMD pads on bottom of Teensy.
• Bottom/Top copper should probably be swapped.