Timeline for Receiving noise signal on input pin after connecting jumper wire to GPIO pin Raspberry pi 4
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 14, 2021 at 21:01 | comment | added | joan | You will get noise on a RF433 receiver until there is a signal present. Not much you can do about that. I use a glitch filter with pigpio. See abyz.me.uk/rpi/pigpio/examples.html#Python__433_py | |
| Aug 14, 2021 at 18:11 | vote | accept | Shahin Shirazi | ||
| Aug 14, 2021 at 18:10 | comment | added | Shahin Shirazi | Thank you so much for the quick answer, I read about floating while ago and totally forgot about it. Now I am going to see what is the best way to remove noise for RF433 receiver as I dont think I can use pull up/down resistor on that. But at least I dont have the floating issue when nothing is connected to the pin. | |
| Aug 14, 2021 at 17:15 | comment | added | Elliot Alderson | Yes, and to emphasize what "float" means to a new user, it does not mean that the voltage will be zero and it does not mean that the voltage will always alternate between a logic 1 and logic 0. | |
| Aug 14, 2021 at 15:51 | history | answered | joan | CC BY-SA 4.0 |