Hi, I am trying to get a ‘professional looking’ hand held remote control (i.e. like a garage remote, at least 2 channel) to interface into an existing application I have running on my Pi5, and whilst there are a number of 433 MHz transmitter/receiver combinations available, all of them appear to be ‘circuit board’ oriented. I need a remote which can survive in someones pocket. Has anyone been able to achieve this, or know how to do this ?
Hi Paul
If Core don’t have anything try Jaycar or Altronics. Even Element 14 or RS Online.
Cheers Bob
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Hi Bob, thanks for your reply. I already have a Response LR-8856 unit from Jaycar and I can use it to ‘talk’ to my Pi5 via the GPIO pins, but this involves utilizing the LR-8856 relays to apply a voltage back to the GPIO pins, but it seems like a ‘sledgehammer’ approach to me. I would like to use one of the Core Electronics Seed Studio units, but I need a more robust transmitter .
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Not sure about the size of the hammer, as sometimes any hammer will do 
e.g. You may get the perfect low level, but it could end up needing more modules. I was kinda thinking an off the shelf unit then hack that to get the Line levels you need. e.g. whats triggering the releays.
Of course there is nothing stopping you from having any point to point radio. then modulate out different OOK/ASK as needed. e.g. HHLLHHLL for one bit pattern or HLHL for the other. then on the RX size, demod and toggle what ever IO pin you like. But now your kinda back to (what I read) as part of your original challenge, you wanted a nice case for the remote… so back to off the shelve and hack it.
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