Use LoRa Shield to listen RF 433MHs

Projects General Guidance
1

Hello all,

I need a little help on my RF project.

I succesfuly used Arduino Uno R3 and a cheap receiver/transmitter to record the RF signal from my light remote but it's working only in close proximity (10-15cm distance between remote and receiver).
I want to extend the range and for this I bought Dragino Lora Shield with 433MHz working freq.

The question is, can I use my Arduino UNO R3 with LoRa shield to do the same thing like in this project? 433 MHz RF module with Arduino Tutorial 4:

If yes, can someone help me with a sketch file for doing the same like the project from the link?

Thank you.

2

If I understand correctly, you want to record a transmission code from an existing RF remote using the Arduino plus receiver module and then play it back using the Arduino plus transmitter module. Currently the record function only works when the remote is very close to the receiver.

LoRa modules have an over the air waveform and protocol that is embedded in the module and is compatible only with other LoRa transceivers. It is very unlikely your remote uses the LoRa waveform and protocol.

The tutorial you link doesn't show antennas on either the transmitter or receiver modules. If you haven't already done so, as a minimum, they should have a 17 cm wire soldered to the appropriate pad. There are discussions on this forum and elsewhere for more sophisticated antenna approaches.

For better receiver sensitivity, using a superheterodyne receiver should work much better than the receiver identified in your tutorial link. e.g. https://www.seeedstudio.com/433MHz-ASK%26amp%3BOOK-Super-heterodyne-Receiver-module-p-2205.html

3

coretto:
Hello all,

I need a little help on my RF project.

I succesfuly used Arduino Uno R3 and a cheap receiver/transmitter to record the RF signal from my light remote but it's working only in close proximity (10-15cm distance between remote and receiver).
I want to extend the range and for this I bought Dragino Lora Shield with 433MHz working freq.

The question is, can I use my Arduino UNO R3 with LoRa shield to do the same thing like in this project? 433 MHz RF module with Arduino Tutorial 4:

If yes, can someone help me with a sketch file for doing the same like the project from the link?

Thank you.

In theory what you are wanting to do is possible, but I doubt you will find any sketches that utilise this function.

There would be no benefit in using a LoRa device for this type of application in any case.

4

it's working only in close proximity (10-15cm distance between remote and receiver).

Use a better antenna. A 17 cm piece of straight wire connected to the ANT terminal will work.

Also, make sure that your "light remote" is actually working at 433 MHz. 433 MHz receivers will pick up signals from 315 MHz remotes, but only at very close range.