Why is my relay not triggering? - Arduino Stack Exchange
The output side of the optical coupler and the transistor driving the relay only work when the current is passing in the proper direction. Not to mention, the reverse bias flyback diode (D1, …
Relay module not working properly - Arduino Forum
Aug 24, 2024 · I have some issues with using a relay. I tried to connect my relay 2 different ways, but non of them worked(I'll add the connections). When I connected the Relays VCC to …
arduino - Relay Sometimes Not Switching - Electrical Engineering …
I am using an SRD-05VDC-SL-C relay with an Arduino Nano. I have also tried different arduino compatible relays. Same issue. I use it to power a light which uses ~250W. Usually powering …
Relay not triggering. Not sure why! : r/arduino - Reddit
Feb 20, 2022 · Your relay needs 5V and 70mA to drive the coil. An Arduino output can not provide that much current, so you need some sort of transistor between the Arduino and the relay coil …
Solution to 5v relay not clicking but led is ON - Arduino Forum
4 days ago · Connected Pin 2 (base) to the 4.7v output of Arduino (pin 7) Connected Pin 1 (emitter) to the Signal pin of the 5v relay. I thought of using the transistor to amplify the …
Relay module not working - Arduino Stack Exchange
On connecting 5v of arduino uno the relay modules arent getting on (led on modules not on). 2 channel once worked with.
Relay Not Working - General Electronics - Arduino Forum
Jun 1, 2020 · I had a simple 5V relay that works just fine with arduino. A few weeks ago it stopped working. Do you have any idea why? I only use the 5V power line on the arduino, so I don't …
Why relay stops 'clicking' : r/arduino - Reddit
Jun 26, 2023 · If you consider a relay as a switch, when you activate the relay, the contacts click together and current flows and when the relay deactivates, the contacts separate. With a …
arduino - Do I have a bad relay module? - Electrical Engineering …
1) Run the relay board direct off 5v and not off the Arduino. 2) Try IN2, IN3 and or IN4. 3) Try a hard wired 5v and ground into the relay board, with the IN signal actuated by a physical …
arduino uno - Relay does not trigger - Arduino Stack Exchange
Jul 27, 2018 · Can you try the relay without arduino? 5V->5V, GND->GND, IN->0V/5V should simulate the arduinos programm. If it does not click, it may be damaged. NC is "Normally …
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