A real-time digital ruler using the HC-SR04 ultrasonic sensor and a 0.91" 128x32 OLED display. A button interrupt allows you to instantly switch between centimeters and inches.
This library provides a simple device independent interface for interacting with Adafruit IO using Arduino. It allows you to switch between WiFi (ESP8266, ESP32, ESP32-S2, ESP32-S3, ESP32-C3, RP2040, ...
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