Sonoff rf basic 2 frquency modulation

Projects General Guidance
1

I would like help in finding the FREQUENCY MODULATION for a Sonoff RF 2 device.

I'm using the Radiohead <RH_RF24.h> Library to run My Si446x transceiver (Si4463 is supported) module to send RF signals @ 433.92Mhz (Frequency accepted by Sonoff Devices).

Can you assist me in determining the frequency modulation accepted by Sonoff RF devices

2

Hello engrsk

Take a search engine of your choice and ask the WWW for 'sonoff +arduino' to collect some data to be sorted out to get the needed information.

Have a nice day and enjoy coding in C++.

3

Thank you for your feedback @paulpaulson

i have tried to find the frequency modulation, i should add that it should be either ASK or OOK as expected i was hoping someone has tried to do the same on arduino for assistance

Thanks

4

Maybe 433 Mhz

See if help:

5

Those are not FM modulation methods.

What do you mean by trying to find the frequency modulation?

Tell us what you are trying to accomplish, and the devices you are hoping to use.

Could you be trying to discover the communication protocol of something you have in front of you? That is distinct from the carrier modulation choice.

a7

6

There is a lot of information on hacking these devices. They also even tell you how to write your own code. Be careful if you do this because the ESP8266 is NOT isolated from the mains. If you are not qualified to works with mains power forget trying.

7

First, ASK is audio frequency shift modulation. Is that the FM you are referring to? Second, OOK is on-off keying. That is just the opposite of frequency modulation. It is amplitude modulation. What is it you want to use frequency modulation for?

8

ASK Amplitude Shift Keying.

FSK Frequency Shift Keying.

a7

9

i need to send ON and OFF signals to a sonoff rf basic 2, i do hope that answers your question
from my research it shows that the rf sonoff accepts these signals using the learning function so i am trying to write code using AN625 Transceiver to send either On signals when grid is available and off signals when i'm on backup power to turn off high watt devices rather than physical splitting the DB board

hence OOK modulation
my "ON" OOK looks something like this 1011010101 and off message like 1011010100
@ 10bits per second

10

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