They're reference designs for a reason.
🔍 Universal port and I2C device scanner for Arduino, ESP32, and ESP8266 microcontrollers. Automatically detects active ports, connected sensors, and I2C devices with automatic identification. Arduino ...
A Select Committee of Parliament appointed to inquire into the release of 323 containers from the Port of Colombo without mandatory physical inspection has decided to meet weekly and complete its ...
or located under the following github pages github.io. Additionally in combination with the technical datasheet of microchip PCF8574-Datasheet. PCF8574_I2C::PCF8574 pcf{0x20, &Wire}; void setup() { ...