Electronic – arduino – 8 channel 5v relay

arduinorelay

I bought an 8 channel dc 5v relay module for Arduino from an on-line store. When i power on my system, the modules become really hot.

My connections are,

  • Vcc to 24vdc
  • Gnd to ground
  • In(1-8) to the digital outputs of my arduino.

Everything seems to be connected correctly. Another thing, when I tried pulling out the jumper connected between Vcc to JD-VCC, then powered it up; the relays and other components didn't turn hot, but the problem is that it does not respond to the digital inputs that I send from the Arduino..

** We assume it is this module, please confirm.

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Best Answer

If the heat came from the output (on the relay) you probably driving too much current through your relay, try add resistance to control the current to acceptable range.

If the heat came from the ICs, double check your module connections.

Note: Can help you better if you provide more information of where the heat came from and a link to the datasheet of the module you purchased.

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