How to use RF Unit RF433T and RF433R

Reply to How to use RF Unit RF433T and RF433R on Fri, 20 Dec 2024 07:28:09 GMT

holofloh — Fri, 20 Dec 2024 07:28:09 GMT

@tspycher
AFAIK: this are very simple transmitter/receiver modules. No protocol, no encryption, no guarantee for transmit/receive the correct data. You have to make your own protocol and data integrity functions.

Try to send something out from UART (not faster than 10kbps) and receive it on the other side. Be aware that disturbance could be possible as 433.92MHz is used in a wide range of applications like wireless thermometers, garage door opener, car keys, wireless doorbells, wireless power switches...

As you get the raw pulses out of the receiver it should be possible to receive and decode data from e.g. the thermometer oder switches. There are several protocol descriptions in the web.

If you want to send simple data from one to the other device, ESPnow could be the better option.

Reply to How to use RF Unit RF433T and RF433R on Thu, 19 Dec 2024 17:35:12 GMT

stefanj9 — Thu, 19 Dec 2024 17:35:12 GMT

I've also been experimenting with the RF433R and RF433T units since today.

RX433T is transmitting. I can "see" that with a Portapack H4.

RX433R doesn't seem to be receiving anything though.

I'm using a Core2 and UIFlow1.0. The Arduino example doesn't work either.

Reply to How to use RF Unit RF433T and RF433R on Mon, 12 Feb 2024 20:42:15 GMT

konacurrents — Mon, 12 Feb 2024 20:42:15 GMT

I'm also looking at what to do with these two RF433 units. I want to send a RF signal to the TV to change the channel. I assume this is what can be achieved (after I know the correct codes).

The following example looks like going down the right direction (albeit with a different RF device).

If anyone has other examples for the M5Stack and RF433 units specifically that would be great.

Reply to How to use RF Unit RF433T and RF433R on Sun, 30 Jul 2023 10:29:21 GMT

pietdevries — Sun, 30 Jul 2023 10:29:21 GMT

I did not find any, however there is some example arduino code here:

https://github.com/m5stack/M5Stack/blob/master/examples/Unit/RF433/RF433.ino

Not very amateur friendly if you want to use that though.

Reply to How to use RF Unit RF433T and RF433R on Mon, 05 Dec 2022 13:12:41 GMT

markram14 — Mon, 05 Dec 2022 13:12:41 GMT

@tspycher said in How to use RF Unit RF433T and RF433R:

I have the following two units:

https://shop.m5stack.com/collections/m5-sensor/products/rf-unit-433mhz-receiver-syn513r
https://shop.m5stack.com/collections/m5-sensor/products/rf-unit-433mhz-transmitter-syn115

In UIFlow under units they are not listed. Does anyone have example code how to use them in python?
Thanks

any update on this?

Reply to How to use RF Unit RF433T and RF433R on Fri, 22 Apr 2022 14:19:39 GMT

Esbenb — Fri, 22 Apr 2022 14:19:39 GMT

@tspycher Did you ever find a way to make those modules work in Python?