Note that the 8x8LED Matrix Module should be common-grounded with Arduino, ie, always remember to interconnect the Arduino GND terminal with the external 5VDC power supply GND terminal. Connect pins ...

After piggybacking some transistors the matrix circuit was working as expected with a simulated input, so the next step was the main board with the processor.

Called the Protected Switch Shield, it is also compatible with the firm’s own XMC microcontroller kits which borrow the Arduino form factor. The shield runs from 8-36V and provides a driver circuit ...

Piezo Trigger Switch circuit described here is a microcontroller-compatible shock/impact sensor switch module works on 5VDC supply. The whole circuit can be assembled on a 5×7 cm common circuit board.

To get the tones from speaker to the Arduino, he hacked the Bluetooth speaker’s circuit board, redirecting its output to an Arduino analog pin.

Electronic, Arduino enthusiasts and makers looking for a project to keep them busy this weekend, may be interested in a cool custom switch created by Dave Darko.

Digi-Key Electronics has signed a worldwide distribution agreement with LogiSwitch, makers of the Arduino-friendly NoBounce line of ICs and switches. LogiSwitch’s adaptive NoBounce technology ...