Arduino Nano 4 Channel Relay Shield

The Relay Shield is a module with 4 mechanical relays that provides you an easy way to control high voltage using Arduino Nano. 4 Channel Relay Arduino Nano shield contains onboard 4 relays, TSOP1838 Infra-Red Sensor, NRF24L01 RF transceiver module, 4tactile switches.  The circuit described here can be used for many applications like the infra-red remote controller, RF remote controller, 4 channel toggle switch.

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Features

  • Supply 12V DC
  • 4 Relay with Normally Open/ Normally Closed Switch
  • The relay can handle 7Amps 230V AC or 30V DC
  • On-Board TSOP1838 Infra-Red Receiver
  • On Board 4 Tactile Switches
  • On-Board NRF24L01 RF Module

Hardware



 



2 Channel Relay Shield for Arduino UNO Circuit and PCB layout

2 Channel Relay Shield for Arduino UNO Circuit and PCB layout

2 Channel Relay shield for Arduino UNO can be used in several applications like remote control, on/off AC or Dc load and any circuits which required isolated high current and high voltage. Relay 1 connected to Digital pin D2 and Relay 2 can be controlled through D12 of Arduino PIN. Both relay has optocoupler in input for isolation which protect Arduino from any EMI noise and complete isolation between high volt/current at relay outputs.  Relay shield required separate 12V DC. Two LED indicate the Relay operations. J1,J2 provided In case single supply for relay and Arduino required.

  • Input: 12 VDC @ 84 mA
  • D2 and D12 Arduino connected to Relay inputs
  • Solder PCB Jumper J1 and J2 if Shield and Arduino need common supply
  • High TTL Signal Required to Trigger the Relay
  • Output: Two SPDT relay
  • Relay specification: 5 A @ 230 VAC
  • Trigger level : 2 to 12 VDC
  • Header connector for connecting power and trigger voltage
  • LED on each channel indicates relay status
  • Power Battery Terminal (PBT) for easy relay output connection