These look interesting for a teeny tiny tranny, up/down/left/right toggle with push, would
sandwich nicely with a V8HT module, a promini and a lithium PP3 to make a matchbox transmitter:
...for whatever reason I have a few in my "Box" !
Looking forward to this new upcoming project but I would go with a NRF24, a Nano/Pro Mini and a AMS1117