* Inform slave of a master button press. * SPI pin numbers: * SCK 13 // Serial Clock. * MISO 12 // Master In Slave Out. * MOSI 11 // Master Out Slave In. * SS 10 // Slave Select * If you found this ...

Arduino_GFX for ESP32-S3 and 4" RGB touch screen is a Arduino graphics library supporting various displays with various data bus interfaces. This library start rewrite from Adafruit_GFX, LovyanGFX, ...

So here’s the thing: Arduino’s built-in memory is tiny. If you’re just blinking LEDs, no problem. But the moment you try to log data, say battery usage, temperature over time, or GPS coordinates, ...