SRX882 receiver does not work (low DATA voltage) on ESP32

Theengs OpenMQTTGateway Radio frequencies gateways 315mhz, 433mhz, 868mhz
1

Hello, I have an OMG IR/RF mounted on an ESP32 (LolinD32). Today I replaced the old RF module with a recommended SRX882 and the Gateway stopped receiving RF signal. :slightly_frowning_face:
I tested it with an oscilloscope and found that the SRX882’s DATA signal is less than 1V when it is on the ESP32. Outside the ESP32, the SRX882 again has a 3.3V DATA signal.
Does anyone know what’s going on :question:
Thanks.

2

Hi!
Could you post a photo of your setup, how do you power the SRX882?

3

Hi boss.
Very simple setup on BreadBoard.
I fed the SRX882 with 3.3v of the D32(ESP32) and put the SRX882 DATA pin directly on the Pin27 of the ESP32.
With the old RXB6 receiver it worked normally. I changed just to follow what the documentation recommends.
Thanks for reply! :+1:
Sorry for this ugly photo. :man_facepalming:

OMG Gateway RFIR Breadboard
OMG Gateway RFIR Breadboard1280×960 186 KB

4

Maybe this is the hint, could you connect it to 3.3v or 5v ?

5

Seems like the SRX882 has a very weak data output.
See https://github.com/sui77/rc-switch/issues/79#issuecomment-355782922

Trying to solve this myself.