Components Needed:** Arduino board (e.g. Arduino Uno) Adafruit R307 fingerprint sensor 20x4 LCD I2C module 6 solenoid locks Jumper wires Fingerprint Sensor Connections: Connect the fingerprint ...

The I2C (Inter-Integrated Circuit) bus is a synchronous serial communication protocol that allows multiple electronic components (sensors, displays, memories, etc.) to be connected within the same ...

Components Needed:** Arduino board (e.g. Arduino Uno) Adafruit R307 fingerprint sensor 20x4 LCD I2C module 6 solenoid locks Jumper wires Fingerprint Sensor Connections: Connect the fingerprint ...

We all know how the free pins microcontrollers are precious. The use of an LCD display in our projects is often unavoidable. In the best case the cost is at least six pin and you'll understand, ...

Starting with physical switches, the way we interact with electronic devices has evolved significantly over the years. We moved from switches to touch screens, and research has continued to push the ...