Sketch to simulate the keypad of an old TI-30 calculator (original model, with the bubble-lens LEDs). I purchased a lot of "for parts or repair" TI-30 calculators on eBay. After mixing and matching ...

This project incorporates communication between an Android Phone and the Arduino using Bluetooth. The basic functionality includes taking messages from an android phone, displaying them on an LCD ...

Controlling 64 LEDs over a three-wire interface simplified the board design somewhat, allowing [Martyn] to etch his own PCB with the toner transfer & HCl/H2O2 method.

Arduino now has an officially supported command-line interface. The project, called arduino-cli, is the first time that the official toolchain has departed from the Java-based editor known as the A… ...