Posting here because I’m interested. I bought a Sonoff RFBridge hoping to get 433 MHz data from my weather station. Apparently because it’s not broadcasting an officially recognized remote protocol, the Portisch firmware for the RFBridge isn’t going to pass the weather station data back to ESPHome, and that’s a huge disappointment. What you’re trying is exactly what I was about to do next, so I’m paying close attention.
What is the specific RF Remote you’re using?
I just checked Reddit for any similar projects, and someone suggested this IR configuration. While it’s not 433 MHz, it’s still a raw data signal, which comes out of the 433 MHz receiver module. Might want to give this a shot.
Hi, I am using the remote from this ceiling fan kit: link
The manufacturer indicates that the remote does in fact run on 433mhz. I tried pin D5 with no luck. I am wondering if it is the fault of the superheterodyne type receiver? My understanding is that it should work better but maybe it is not compatible with ESPHome.
I might try ordering these to see if I get better results.
Is there an FCC ID on the remote or the fan module? The vendor on Amazon actually said ‘443 MHz’ which seems wildly incorrect, but the FCC review should report the frequency correctly.
I’m not able to find an FCC ID on the remote, and I’m hesitant to unwire the unit in my fan. However, inside the remote I found a crystal oscillator labeled “13.560” (the resonant frequency). This matches the oscillator crystal on the transmitter I purchased, which also reads 13.560.
I’m not sure if this translates to matching transmission frequencies between the two, but it is all the information I have at the moment.
Edit: Also, in another post the amazon vendor says the unit runs at 433MHz, so I am fairly certain the 443 MHz comment is a typo.
I might try ordering these to see if I get better results.
I had a lot of problems getting it going at all - you are much more likely to have a problem with your circuit at this stage than it being completely down to the components.
I was not aware any complex circuitry was necessary for the module to work. Per the manufacturer specs here for a similar item: link, it should be able to be wired directly to an arduino or equivalent. Perhaps it has an issue with the Wemos D1 mini? I wanted to use the superheterodyne module for its better range but I have ordered a standard RF pair to test in the mean time. I will also try verbose logging of my module, I suppose there’s a possibility, although unlikely, it is just dead
Don’t give up hope, @devjklein. That photo simply shows both the transmitter and receiver connected to the Esp8266 with a LED added. I have a 433 MHz receiver/transmitter pair arriving tomorrow, and will get the receiver module running Tuesday evening or Wednesday some time, using a Wemos D1 mini clone.
One thing I noticed is, the module I ordered appears to need 5VDC for Vin. If you wired your module to 3.3VDC Vcc signal, that might explain why it’s not returning any data? Is it connected to the USB/5VDC pin on the D1 mini?
My 433 MHz receiver/transmitter pairs arrived late this afternoon. Now I just need to find my Wemos D1 mini clones. We’ve got construction going on in the house this week, and finding things is a bit of a challenge right now.
Fortunately, I had an unused authentic Lolin D32 ESP32 board handy. Set it up with the 433 MHz receiver board on pin 5, and VERY_VERBOSE logging. Holy heck did it ever start spewing a LOT of data received. Shifting to only VERBOSE logging now that it’s clear it’s working. Nope, VERBOSE was way too much, too fast, as well.
Found the Wemos D1 Mini clone, still need to cable it up. I have to wonder, can the ESP8266 handle the enormous amount of data coming in? I mean, it should, but you never know. Got it cleaned up, connected, and configured. It’s definitely receiving raw 433 MHz RF data. Here’s the setup photo, and the ESPHome YAML config:
It mostly handles it okay if logging is not set to verbose, although I do occasionally get some strange crashes and stack traces which I didn’t get to the bottom of yet.
This is actually the one receiver nobody should should use because of it’s insane noise (which can not be fixed). It’s not superheterodyne (that’s the type you want) anyway.
I definitely noticed the constant noise. I’ve since moved on to directly tapping the 433 MHz signal from the weather station receiver, as another person did.
Sorry I’ve been MIA. I got a similar receiver to yours, however I am facing the same issue of wayyyy too much noise. I’m also not sure that my receiver screw is set correctly, it was not glued in place as it should have been when it arrived.
Hi folks.
I’m doing something very similar. I’m using “the one receiver that nobody should use” lol.
It does not filter out noise. If fact, if you connect it to a speaker, you will hear the hiss, and any data that comes in.
Mine is connected directly to a PIC microcontroller. This basically continually loops until it detects a ‘preamble’ of around 8ms. This is doing the work of filtering out the static noise.
After that, it waits for the first bit, then reads in the code.
This is specific timing to what I have created, it can’t read anything else.
Once the information has been read, it outputs it over 9600 8n1 serial data into an ESP8266, which in turn sends that out to HA via restful.
I was under the impression that an 8266 on its own wasn’t fast enough to capture RF data. I would like to be proved wrong on this as it would make life a lot easier.
Just an observation, that RF receiver is missing an aerial.
For 433Mhz, a 32cm wire should be soldered to the connection at the bottom right, that’s assuming your going to use it again.
posting here as I spent some time on the topic as well.
I have a RXB6 receiver (Link) which i used with few different 433mhz buttons and door/window sensors with a D1 mini pro / Lolin D32 Pro / and ESP32 DEVKIT DOIT.
Strange thing I realized is behavior is quite different and settings needs to be adjusted accordingly to the board, with D1 mini pro definetly having the more consistent behavior.
I was really surprised by this and can’t explain why it is happening…any idea?
Gents,
Having noise issues with cheap RF receivers I decided to buy this superheterodyne module hoping to pair a Sonoff 433Mhz remote. Now I’m scratching my head because I do not know how the pins work.
Shifting to only VERBOSE logging now that it’s clear it’s working. Nope, VERBOSE was way too much, too fast, as well.
Here’s the setup photo, and the ESPHome YAML config:
is actually the one receiver nobody should should use because of it’s insane noise (which can not be fixed). It’s not superheterodyne (that’s the type you want) anyway.