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The DFRobot Relay Module is a standard relay used with a controller board to interface external electrical circuits or modules. Some of the most common applications with Arduino are: Home lighting, electrical appliances of high power and other equipments. The modular design makes it easy to integrate with a controller board. The Relay integrates a status LED, in order to acknowledge visually it's status ON or OFF. It can be controlled through the digital IO port, with a simple HIGH or LOW on Arduino compatible boards. Other boards will work requiring same voltage level. Other usages include control of solenoid valves, lamps, motors and other high current or high voltage devices.
Latest Update: V3.1
Introduction: This simple system detects water quality through simulation Gravity: Analog pH Sensor / Meter Kit For Arduino and Gravity: Analog Turbidity Sensor For Arduino, and supplies and drains water through the submerged pump and solenoid valve.
Introduction: With all the lights and decorations that people use at Christmas, power is left on all the time and electricity bills skyrocket. I made this motion detecting Christmas tree light setup that only turns on when people are nearby.
Project 4. Application Tutorials of FireBeetle Board - ESP32 BLE: Smarten a Plugboard
Introduction: What you have seen is a smart plugboard that converted by ESP32 master board and controlled by BLE of ESP32.
