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There is a small SRAM chip on the back
They're driven by the HT16K33 chip over I2C
Each Raspberry Pi standoff location is clearly etched for easy assembly
turning touches into keyboard KeyUp/KeyDown presses (so you can make a veggie-keyboard) as well as an audio player that will play a sound per sensor (fruit drums
the ESP32 has secure WiFi capabilities
Pimoroni BH1745 Luminance and Colour Sensor Breakout home automation There is a small SRAMA really sophisticated and accurate colour and luminance sensor breakout that's Raspberry Pi and Arduino compatible. As well as detecting RGB colour and light level, it has added bells and whistles like 50 60Hz light noise rejection, a wide detection range, and two illumination LEDs. This type of sensor is the same as you'd find in phones, tablets, and laptops where they're used to detect ambient light temperature and adjust the colour temperature of