This is a placeholder topic for “5V 2 Channel Relay Module 10A” comments.
A versatile relay board with opt-isolated inputs. Each channel can drive up to 10A @28VDC
Read moreThis is a placeholder topic for “5V 2 Channel Relay Module 10A” comments.
A versatile relay board with opt-isolated inputs. Each channel can drive up to 10A @28VDC
Read moreHi, does this work with 3.3v logic if powered by 5v? wanting to use with esp32
does the 5V 2 Channel Relay Module 10A work with 3.3V control logic (with 5V VCC)? I would like to use it with an esp32
Hi Daniel
Text on this one is delightfully vague isn’t it. No schematic to help, does not even indicate whether operation is active high or active low. I personally would not touch this with a barge pole (as the saying goes) unless that sort of information is made available.
But getting back to your question, being opto isolated it probably would work IK. You are doing the right thing though by operating the relay at 5V. it is fairly obvious that this option is available which is good.
Cheers Bb
I’ve just tested a unit from out shelf stock, I was able to make the relay fire with 3.3V logic while VCC was connected to both 5V and again the 3v3 rail.
I’ve updated the product page to reflect this new information, which will be live in a few hours.
Hi Dan
That still does not say if it is active high or active low input.
Although
sounds like active high. But that is still only a guess.
Cheers Bob
This has been brought up many times but operating the relay at 3.3V is well outside manufacturers specs which from memory is 3.75V. Some or even most will probably work albeit a bit slower but there are others that have been reported to not operate at 3.3V.
Awesome, thanks for the help guys