ESP8266 Community Forum

- Sun Jul 09, 2017 6:30 am #68100

I would rather try and find a more appropriate module. That's a lot of work. That's not to say i haven'd done things like that.

Yes. I'd prefer to buy modules with a decent input interface but they can be hard to find at reasonable cost. The vast majority have copy-catted a bad design. Although the modification steps are spelled out, they don't actually take that long particularly when doing multiple units where you get into a routine. I did 4 single modules for my own personal use in under 30 minutes.

- Sun Jul 09, 2017 6:34 am #68101

no. that relay is active low.

I don't think active low or high is the issue here. It is whether the pin can sink enough current to activate the relay. I suspect it probably can. One way to check assuming it is an active low would be to ground the input through a digital meter in current mode and see what current flows.

- Sun Jul 09, 2017 7:07 am #68102 I'll make a clear statement now. I have that 4 channel relay module. It can be triggered with ESP8266. Active low.