RF daisy chain device design

Thread Starter

Nhubbard1

Joined Jan 14, 2020
3
Hi all, I am trying to design a system that essentially involves a motion sensor that when triggered will broadcast on a frequency (local RF, not a cellular link) that another same unit will receive and will trigger that unit which will then broadcast and trigger the next unit along the chain. Any thoughts? Thanks
 

pmd34

Joined Feb 22, 2014
499
You could look at some of the Nordic semiconductors ICs, something like the nRF24L01+ should do the job, its a transceiver and has independent send and recieve data buffers, it would need to be looked after by a microcontroller (the RF chip can trigger an interrupt when it receives data) but you can get modules with the IC on it fairly easily, and there are already Arduino libraries out there for them, if you don't want to do that work yourself.
 

Thread Starter

Nhubbard1

Joined Jan 14, 2020
3
Thanks for the replies thus far. To answer an early question the transponders are likely only 100m apart. Are there any pre-designed modules I could adapt to my purpose?
 
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