Pairing a RF TV Remote (sprf24b31a chip ) with nrf24l01

Projects Networking, Protocols, and Devices
1

hello guys,

my TV only supports RF signals (Sharp aquous) and my remote is fairly broken, i want to build a "middleman" that receives ir signals from my fire tv remote and then send the corresponding RF signal to my TV.

the tv remote itselfs uses a sprf24b31a chip wich is a 2,4ghz rf chip.

i set up a Arduino Nano with an nrf24l01 chip and an IR receiver, but i cant find out wich channel i have to set the nrf24l01 chip to receive the codes from my TV Remote.

is there maybe a way to programm the arduino, so it cycles trough each channel till it receives something from my remote ?

thank you for your help :slight_smile:

edit: i found a datasheet from an Optical mouse wich uses the sprf24b31a chip, maybe i can solder a wire to the right pin and sniff the rf data trough the wired connection?

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Edit: and here is a photo of the TV Remote Chip

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edit edit: i soldered a wire to the pin 16 of the chip in the wiring diagram and hooked it up to the arduino and printed it out to the serial monitor. its a bunch of 0 and 1 but i can clearly see how it reacts to my presses on the remote. i will try now to hook the wire up to the line in of my soundcard and record each button press.

Determine frequency of RF remote control
2

nRF24 modules are only intended for communication with other nRF24 modules.

Unless you have documentary evidence that the wireless module in your TV can communicate with an nRF24 then I reckon you are just wasting your time. It would be cheaper to buy another TV than to buy an oscilloscope for 2.4GHz signals.

...R
Simple nRF24L01+ Tutorial

3

yeah i will try to use the remote itself now as the middleman, connecting the arduino to the on/off button and volume buttons, this should work i think

Robin2:
nRF24 modules are only intended for communication with other nRF24 modules.

Unless you have documentary evidence that the wireless module in your TV can communicate with an nRF24 then I reckon you are just wasting your time. It would be cheaper to buy another TV than to buy an oscilloscope for 2.4GHz signals.

...R
Simple nRF24L01+ Tutorial

4

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