I just plugged the module adapter into a solder-less breadboard and supplied +3.3 volts to the VCC pin and ground to the GND pin. I connected a SPST switch from pin 3 (CHIP_EN) to ground and a second ...

PC817 Adapter Module Optocoupler with Arduino PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Product Introduction: 1.Driving Port Signal Voltage:3.6-24V 2.Output ...

The Arduino connects to the FM radio module over I2C. ... The AM-FM selector knob was fitted with a micro-switch connected to the Arduino for selecting the preset stations.

Acromag's BusWorks XT Series multi-channel optocoupler and interposing relay modules connect discrete field devices to measurement & control system I/O modules. The XTA-120V-6 optocoupler modules have ...