Shared Projects

NOTE: This board uses the OLD pinout and the rpi-rgb-led-matrix library must be specifically compiled to work with this version. If you are a FPP user, check on the forums before ordering any of this board.

This board allows plugging a Raspberry Pi into a HUB75 compatible LED panel. The 26-pin female header for the Pi and the 16-pin tall stacking header for the HUB75 panel both attach to the back/bottom side of the board. The PCB hangs over the edge of the Pi and allows the Pi to plug directly into the back of the HUB75 panel. Pin 1 for the Pi is on the left bottom of the connector when viewed from the top of the board. Pin 1 for the HUB75 interface is the top right of the board. This PCB may also be used with a male header for the HUB75 panel attached to the top side of the board rather than a female header attached to the bottom side of the board.

Soldering kit that is an implementation of the game Simon

See: the Github page.

3D Scanner

TLV3011 based supercapacitor overvoltage protection board (rev 0.2)

Simple breakout test board for Philips Luxeon Z ES LXZ2-4080 ultra-high luminance LED for camera flash application.

Low Voltage Disconnect w/ MOSFET

Graduation cap shakey shakey

LaunchPad To BreadBoard Adapter

RobotaE

Econ systems/ICOTech door control motherboard

An adapter for PIC ICSP using pogo connectors.

A Breakout Board for STM8S003F3 microcontroller.

$8.95 for 3 copies & works even if you just get “close” to the values specified here. Tested as solder practice for students.

I’m aware this IC seems to be Not Recommended for New Designs… or at least the DIP version of it. But try to find another speaker amp of 1-2W with an idle current draw in the single-digit mA range, and operates between 2-9v (or more) - I’ve yet to find another one that does all that.

Parts: [source suggestions to come]
2 small electrolytics, 4.7uF 16+v
5 large electrolytics, 470uF 6.3-16v (the one far right, above the output, can be any large size greater than the supply voltage)
4 non-polarized caps 0.1uF SMD
6 pT/H (thru-hole) resistors, 2x each of 4.7ohm, 10Kohm, and 3.3Kohm, 1/4W
LED and 4k7 SMD resistor optional - or even short the R-pads and use a 2-pin header with an LED+resistor combo cable
0.1" 3-pin headers for audio in & out, 2x3 header for off-board volume pot, and reversible 4-pin header for power in - you choose gender for all of them.
TDA2822 DIP or SOIC-8 amp IC (note DIP has higher max power rating, 1.4W total - check amazon for batches of 5-20pcs.) …Another equivalent chip is NJM2073, made by NJR/JRC (digikey’s mfg. page) as a pin-for-pin replacement.
I designed for both DIP-8 and SOIC-8 packages, so there would be no need for an SOIC adapter board when trying to assemble this project.

Mounting holes on 3 of 4 corners, grounded, spaced 1.5" long by 0.8" wide.
The last board design I uploaded/shared before I learned how to use the “smash” tool in EagleCAD. Separating the labels from the package can be a great thing if you need to move the labels in tight spaces. This design ought to be evidence enough for that fact, though I didn’t feel that improving the labels alone would warrant a re-upload.
If my labels here leave you confused, you might check out my first version, which is less visually cluttered since I left off many of the labels altogether.

VU meter & control Rev B

Rev C

Uses Arduino Pro Mini 5v to control MOSFETS to turn solenoids and a pump on/off to control the pressure/vacuum on a cylinder.

MPSSE DIP breakout