Aktion: Make verschenkt Platinen für die CO2-Ampel (meanwhile available here)

Adafruit Mini Color TFT with Joystick FeatherWing (12.8 KP, 186 ppi):

↑: delay +A: backlight
← →: buzzer
↓: delay -B: HSV test pattern

Buzzer on button solder point 2

SPS30 PM2,5 sensor on I2C port

Measurements are broadcasted via SoftAP SSID or HTTP GETted

510/770 mW @ 160 MHz

Adafruit_ST7735::fillScreen() ms

MHzhard-/software SPI
8061590
16039300
2409178