Is my 4CH Relay Friend?

Jaseinatl

I was going to use the Inland 4CH relay (5v) to switch around 4 USB LED Strips in sequence with a motion sensor trigger.

The motion sensor wasn't working the way I wanted, so I switched to a simple button just to get it to work.

The Nano I was using went black and the relay board shut off.

I guess I fried the NANO somehow. But I used a spare UNO that I had lying around. Now the Relay Card won't power on.

Is there any way to reset it or is this just a bad unit? I didn't even have anything connected on the load side and it was working find before (I know, the worst thing that everyone says).

Should I just give up and make the 50 mile trek back to MicroCenter to pickup a new relay?

Ian

Greetings,

Are you referring to this item? https://www.microcenter.com/product/617951/inland-4-channel-5v-relay-module-for-arduino#photogroup-3 I'm not seeing any sort of reset function on that unforunately if it's not getting power.

jverive

There doesn't appear to be any fuse or resettable devices on this board. It wouldn't be difficult to determine why the board isn't working if you have a multimeter, since the circuitry is very simple. But since these modules are dirt cheap it's hard to justify the effort to troubleshoot and make repairs.

If you still have the module I'd be happy to determine (for free) why it isn't working (I'm a retired failure analysis engineer with decades of experience with such assemblies, but I still enjoy the challenges of failure analysis.