Timeline for Why is my relay not triggering?
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
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| Apr 16, 2019 at 5:13 | comment | added | Juraj♦ | "Power supply negative/live to VCC (the one next to the JD-VCC)" the secondary power supply should power the relays over JD-VCC | |
| Apr 16, 2019 at 1:37 | comment | added | Amin Shah Gilani | Thanks @DuncanC, that's what I'm trying to do. | |
| Apr 16, 2019 at 1:34 | comment | added | Duncan C | Note that driving your relay off of the 5V from your Arduino is a bad idea. If memory serves those relays draw about ≈200mA - 250mA per relay, so you could drive maybe 2 of them at the same time, but if you try to drive 3, you'll exceed the 500mA max output you should draw from the Arduino. If you're powering it from USB, it will trip the internal fuse and shut off. If you're running it from the barrel connector, you might get away with it, or you might overheat the Arduino's voltage regulator, depending on various factors. you should really drive your relay with a separate power supply. | |
| Apr 16, 2019 at 0:55 | history | edited | Amin Shah Gilani | CC BY-SA 4.0 |
Added what works
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| Apr 16, 2019 at 0:40 | history | edited | Amin Shah Gilani | CC BY-SA 4.0 |
added 190 characters in body
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| Apr 16, 2019 at 0:40 | comment | added | st2000 | So, if the secondary power supply is 5V, then your setup will probably work if you move it to the other side of the pair of pins. Also, you will need to connect the grounds of the 2 power supplies together. See the schematic in my answer below. But I think most people just put a jumper across J5 or JD | |
| Apr 16, 2019 at 0:38 | answer | added | st2000 | timeline score: 2 | |
| Apr 16, 2019 at 0:38 | comment | added | Amin Shah Gilani | @st2000 secondary 5V power supply connected to VCC :) sorry, editing the question. | |
| Apr 16, 2019 at 0:37 | answer | added | Duncan C | timeline score: 1 | |
| Apr 16, 2019 at 0:35 | comment | added | st2000 | oh, I see the problem. You are missing the jumper on JD-VCC. So, instead of a jumper - there is a blue wire - where is the blue wire going? | |
| Apr 16, 2019 at 0:31 | comment | added | Amin Shah Gilani | @st2000 I did. Sorry, I'm not a hardware person so I don't even know how to make a schematic. But let me edit the question. | |
| Apr 16, 2019 at 0:30 | history | edited | Amin Shah Gilani | CC BY-SA 4.0 |
added 179 characters in body
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| Apr 16, 2019 at 0:28 | comment | added | st2000 | Guessing (with out a schematic), you didn't add a power source to the relay to LED circuit? I don't see any wires on that side of the board. So I am not sure where the LED that is not lighting up is located. Let me know here in a follow up comment and I'll post an appropriate answer you can accept so others who find your question with a similar problem will have an appropriate answer. | |
| Apr 16, 2019 at 0:25 | review | First posts | |||
| Apr 16, 2019 at 0:50 | |||||
| Apr 16, 2019 at 0:23 | history | asked | Amin Shah Gilani | CC BY-SA 4.0 |