Just wondering if anyone can make a recommendation. I have PIR (and MMWave) sensors attached to a cheap alibaba ESP32 Dev Board. And I am constantly getting false positives. I have four of these sensors , some are worse then others, with the bathroom being the worst (I think it is the tiled room, I have tried using one of the other sensors with the same effects)
I have added ferrites, made it a bit better sometimes.
Have added the expensive Panasonic PIRs, better but still happening every now and again.
I’m thinking its the board, is there another more expensive board with better EM management? Something not so leaky?
What you are experiencing is most likely interference of ESP’s WIFI signal with your sensor components. This is a known problem and I can give you recommendations for both PIR and mmWave. But that is a very different topic and I suggest that we do not hijack this thread with it. Please open up a dedicated thread for your question, leave a link here, and I will be happy to share what I know.
Thanks, I guess it was a bit of TLDR lol, I know its an EM issue with the board, its the board I’m asking about, not the PIR or the MMwave, I have those covered. Just giving context.
I do have a post about it. But, I was here to ask in one line, would getting a more expensive board fix my issues and what boards have people had good experiences with
Nope, I read your post thoroughly. But I am simply not convinced that you solved the basic problem of RF interference. Ferrites will not help as you get strong induced signals right in the sensor PCBs. I have solutions for you but they are about the sensors and not about the ESP, so not fitting here.
I get what you are saying, and thank you, I’m not trying to go round in circles with you here
What I’m asking is… would a more expensive board have less RF interference because of the better components. I feel, I have the best components on the sensor side, is it time to change the board and if so, what’s the best board for this type of project
I’d love to hear people’s recommendations on ESP32s for low power deep sleep battery projects too.
Like along the lines of “I’ve been using board x and it wakes y times per day to do blah and it lasts z days off of a 1mah battery, and it doesn’t even play weird silly-buggers, it has just been rock solid since dinosaurs ”.
It can be just bad luck, but my LilyGo / TTGO ESP32 POE failed on me after about 1,5 years of usage. The chip and ethernet still work, but PoE fails. Funny since PoE was chosen for reliability reasons
I just switched off PoE in my switch and power it over USB now. Easy in this case and still connected to my UPS. I was planning to add one at a more remote location, but I’m in doubt about that now.
Isn’t that all a bit weird? Both QuinLED (in the Netherlands) and the mother company of Allnet China (in Germany) are EU based. Shouldn’t they have thought about a EU distribution channel already, without requiring our external input?
