Tag: 5v relay

Sensor Wiki: KY-019 Relay Module

This wiki article covers the KY-019 relay module. Included are wiring diagrams, code examples, pinouts, and technical data. This module is designed to allow the Arduino or Raspberry Pi to control high voltage device through a magnetic relay using low voltage GPIO pins. Content  Sensor Module Image Gallery  Description and Technical Data The KY-019 relay module has […]

Control High Voltage Devices with an Arduino

One of the best features of the Arduino is the ability to control relays.  Relays allow a circuit of one voltage or current to be operated by a circuit of a different voltage or current. In the case of an Arduino that operates at either 3.3V or 5V DC, connecting a relay allows us to […]