# Relay seems to be getting a signal, but no clicking **URL:** \ **Category:** General Guidance\ **Created:** [January 17, 2023, 3:24pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691 "2023-01-17T15:24:20Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![milklizard88](https://avatars.discourse-cdn.com/v4/letter/m/9d8465/32.png) [@milklizard88](https://forum.arduino.cc/u/milklizard88)\ **Post date:** [January 17, 2023, 3:24pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/1 "2023-01-17T15:24:21Z")
Hi everyone I'm at a bit of a brick wall at the moment. Ive had a shipment of these relay modules [link here](https://www.aliexpress.com/item/32812356669.html?spm=a2g0o.order_list.order_list_main.10.21ef18027JX1rB) but I can't get them to work. I was using an esp32 with no luck so I just decided to run the blink sketch on an arduino uno to troubleshoot. DC+ to 5v DC- to GND IN to pin13 (built in led etc.) The green power light comes on, and the red led on the module comes on with the built in arduino led so that suggests it is getting a signal But there's no clicking to suggest the relay is doing anything. In case I stumbled upon a magic relay that's silent, I've tried hooking up a powered 12v led to NO with no luck , it shines through NC so the LED is not broken I've tried hooking up DC+ and - to an external power supply and increaased the voltage above 5v in case it wasn't getting enough juice, and I just get a gradual light on the red signal LED which is really weird, I don't know why it's doing that but it shouldn't matter I've swapped out 5 modules with the same issue now, could it be that I just had bad luck and have bought a batch of faulty relays? Thanks in advance ---
**Author:** ![Idahowalker](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/idahowalker/32/238858_2.png) [@Idahowalker](https://forum.arduino.cc/u/Idahowalker)\ **Post date:** [January 17, 2023, 3:27pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/2 "2023-01-17T15:27:38Z")
Is the 5V relay being driven by a 3V3 MCU? ---
**Author:** ![milklizard88](https://avatars.discourse-cdn.com/v4/letter/m/9d8465/32.png) [@milklizard88](https://forum.arduino.cc/u/milklizard88)\ **Post date:** [January 17, 2023, 3:40pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/3 "2023-01-17T15:40:09Z")
The DC+ is connected to the 5v arduino pin ---
**Author:** ![Idahowalker](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/idahowalker/32/238858_2.png) [@Idahowalker](https://forum.arduino.cc/u/Idahowalker)\ **Post date:** [January 17, 2023, 3:47pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/4 "2023-01-17T15:47:03Z")
did you try an other pin that is not driving the internal LED? ---
**Author:** ![er\_name\_not\_found](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/er_name_not_found/32/647693_2.png) [@er\_name\_not\_found](https://forum.arduino.cc/u/er_name_not_found)\ **Post date:** [January 17, 2023, 3:55pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/5 "2023-01-17T15:55:27Z")
This sounds like you are powering the relay board through the Arduino. This is really bad. Please post a wiring diagram before going much further. ---
**Author:** ![gilshultz](https://avatars.discourse-cdn.com/v4/letter/g/67e7ee/32.png) [@gilshultz](https://forum.arduino.cc/u/gilshultz)\ **Post date:** [January 17, 2023, 5:38pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/6 "2023-01-17T17:38:47Z")
Note: A Power Supply the Arduino is NOT! It only has a few extra mA available and overloading it causes lots of nasty things to happen. I generally use 12V or 24V relays as I power with an external power supply of that voltage. ---
**Author:** ![ruilviana](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/ruilviana/32/722429_2.png) [@ruilviana](https://forum.arduino.cc/u/ruilviana)\ **Post date:** [January 17, 2023, 5:46pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/8 "2023-01-17T17:46:55Z")
Hi, @milklizard88 this is the schematic of your relay module. If you have knowledge in electronics you will understand how to connect it and avoid feeding it with +5V coming from the arduino. The relay coil is 12V so it will be necessary to supply the module with 12V. ![ModuloReleX](https://europe1.discourse-cdn.com/arduino/original/4X/d/7/4/d74e957fbe06e9c868963146c2c5fa32668d433b.jpeg) ---
**Author:** ![Wawa](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/wawa/32/1211303_2.png) [@Wawa](https://forum.arduino.cc/u/Wawa)\ **Post date:** [January 17, 2023, 10:03pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/9 "2023-01-17T22:03:11Z")
But OP posted a link to a 5volt relay module. And it shouldn't be a problem to power one or even two 5volt relay modules from an Uno. There must be something else going on, like not setting the pin to OUTPUT. Posting guidelines tell you how to give us all the needed information. Wiring diagram, image, and code. Leo.. ---
**Author:** ![ruilviana](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/ruilviana/32/722429_2.png) [@ruilviana](https://forum.arduino.cc/u/ruilviana)\ **Post date:** [January 17, 2023, 10:12pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/10 "2023-01-17T22:12:50Z")
In the link that the OP posted there are 3 figures, one with a 5V relay, one with a 12V relay and the third with a 24V relay. Can't tell which one he has. @milklizard88 What voltage is written on your relay? ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [July 16, 2023, 10:13pm UTC](https://forum.arduino.cc/t/relay-seems-to-be-getting-a-signal-but-no-clicking/1078691/11 "2023-07-16T22:13:43Z")
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