All the modules are powered with 5V from the Arduino. Below is the assembled image ... buzzerPin (Pin 5): Controls the buzzer for alerting the rider. lcd (0x27, 16, 2): LCD initialization with I2C ...

The PCF8574_LH library provides a simple interface for controlling the PCF8574 I/O expander using the I2C communication protocol. It allows you to read and write values to the PCF8574's registers, ...

void loop() { taskManager.runLoop(); } Here's a simple example using a switch: In setup we initialise it telling it to use arduino pins for IO, we could use shift registers or an i2c expander, and we ...

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