Learn to build an RFID based attendance system using Arduino with step-by-step instructions, circuit diagrams, and complete code. This $35 DIY project replaces expensive commercial systems with ...

It features three mechanical push buttons for mode control and a 16x2 I2C LCD to display real-time traffic timings and modes. c embedded-systems finite-state-machine lcd16x2 i2c-protocol stm32f103rb ...

This is a project which adapts code from another user to allow usage of the PCF8574 I2C lcd backpack for either 20x4 or 16x2 lcd screens. License MIT license ...