Timeline for My relay triggers on access. How to disable this?
Current License: CC BY-SA 4.0
26 events
| when toggle format | what | by | license | comment | |
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| Feb 19, 2023 at 21:33 | review | Close votes | |||
| Mar 6, 2023 at 3:08 | |||||
| Feb 19, 2023 at 21:16 | comment | added | Milliways | Does this answer your question? Can you use a 5V Relay Module with the Pi? | |
| May 2, 2022 at 20:34 | comment | added | Dims | I am doing connect change often until I understand how it works | |
| May 2, 2022 at 20:02 | comment | added | Dougie | You're still crap at wiring screw down terminals. Make your joints tidily and they won't fail so quickly. Don't stuff two wires in one terminal, use a Wago if you need to connect two wires together. | |
| May 2, 2022 at 19:04 | comment | added | Dims | @Dougie I am using additional contactors to control high voltage and entire assembly will be inside a case. It is test assembly | |
| May 2, 2022 at 16:03 | comment | added | Dougie | @dims in the photo just below "Here is my module:" there are switched cables that have exposed copper, they aren't insulated. Curious fingers can get a shock (or will trip your RCD/GFCI) if they touch those exposed wires. IT IS NOT SAFE. If you aren't competent to wire the relays you MUST get what you're doing checked by a qualified electrician. Mains at 110V can kill. Mains at 230V WILL kill. | |
| May 2, 2022 at 15:54 | comment | added | Dims | @Dougie what do you mean "exposed copper"? You mean somebody can touch in and get shocked? It's for testing purposes, so don't worry | |
| May 2, 2022 at 15:28 | comment | added | Dougie | What load are you switching with those relays? If it's AC mains then it is NOT SAFE. You can't have twisted neutral wires, like that. You can't have exposed copper, like that. The better way to run a Raspberry to switch mains is to switch 24V with the relay on the RPi. Then switch the load with a mains relay, mains SSR or mains contactor (from the 24V circuit) closer to the load. | |
| May 2, 2022 at 15:17 | comment | added | Dims | @Milliways why would it damage my Pi I don't understand? | |
| May 2, 2022 at 15:15 | history | edited | Dims | CC BY-SA 4.0 |
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| May 2, 2022 at 15:11 | comment | added | Dims |
@tlfong01 whatever "normal" is, why is it change on GPIO.setup(pin, GPIO.OUT)? Shouldn't it be and stay in "normal" before and after this instruction?
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| May 2, 2022 at 13:40 | comment | added | tlfong01 | @Dims: (1) There are two kinds of relay (modules): (a) High level (3V3) trigger, (b) Low level (0V) trigger. (2) There are two kinds of terminals you can use (a) normally open, (b) normally closed. In other words, 4 combinations: (i) HT NO, (ii) HT NC, (iii) LT NO, (iv) LT NC. (3) For 110/220VAC circuits, to play safe, you usually connect L wire to COM, and NO to your lamp etc. (4) For low voltages, say less than 24VDC, you can try different wiring combinations to learn the principles. | |
| May 2, 2022 at 12:37 | answer | added | Dmitry Grigoryev | timeline score: 2 | |
| May 2, 2022 at 12:09 | comment | added | Milliways | PS I HOPE the connections are NOT to mains power as this would violate all safety standards and you are risking electrocution. Even in an approved enclosure the shown wiring would fail safety rules. | |
| May 2, 2022 at 12:06 | comment | added | Milliways | The photo is meaningless particularly as you don't show connections to Pi - post REAL data i.e. link to module and text describing connections, but if you are using one of these dodgy modules without additional circuitry it won't work and may have damaged your Pi. | |
| May 2, 2022 at 10:48 | comment | added | Dims | @tlfong01 see the picture pls | |
| May 2, 2022 at 10:47 | comment | added | Dims | @joan what are implications? | |
| May 2, 2022 at 10:47 | comment | added | Dims | @Milliways see photo; I have connected VCC to 5V, GND to GND and INs to GPIOs, directly | |
| May 2, 2022 at 10:45 | comment | added | Dims | @jsotola sorry, of course it's relay module, see photo | |
| May 2, 2022 at 10:39 | history | edited | Dims | CC BY-SA 4.0 |
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| May 2, 2022 at 7:55 | review | Close votes | |||
| May 19, 2022 at 3:09 | |||||
| May 2, 2022 at 7:35 | comment | added | joan | The Pi's GPIO are 3V3, NOT 5V. | |
| May 2, 2022 at 2:02 | comment | added | tlfong01 | My short answer is yes and no, it depends. Let me know which relay module are you using, high or low trig etc: electronics.stackexchange.com/questions/505318/… | |
| May 2, 2022 at 0:22 | comment | added | jsotola | both your links point to relay modules, not to relays ... a relay is the blue block component on the relay module PCB ... the state of the relay in the relay module is dependent on the circuitry that drives the relay | |
| May 1, 2022 at 23:41 | comment | added | Milliways | What relay? How is it connected? See Can you use a 5V Relay Module with the Pi? | |
| May 1, 2022 at 23:00 | history | asked | Dims | CC BY-SA 4.0 |