That’s the question [Kathy] asked when she built this LED matrix light pen project. It looks simple ... signal up to a reasonable level for an Arduino Uno to detect. The result is impressive ...

The Nova is a tiny RP2040 board with a 7x10 LED matrix for creative projects. It works with MicroPython and Arduino IDE, offering the potential for various applications. Interested crowdfunders ...

Both the Arduino and the MPU-6050 board are readily available and not particularly expensive, and the LED matrix displays are ... handily available from the project page. It might not be able ...

WiFi’s LED matrix The on-board 12 x 8 (96pixel) matrix of red LEDs (photo right) is Charlieplexed for pixel-level addressing. Arduino_LED_Matrix API is available for programming and control, and “we ...