Fantastic Frank, very satisfying isnt it?
50m with the low power module is pretty good I thought!
Thank you for your encouragement with the project, and for the regulator idea, I do have some but it didnt occur to me to use them with the transmit module! Its a great idea as the 0v and 3v3 pins align, so the regulator can sit rigidly on two header pins. I must remember to solder the NRF wires first though, they're harder to get to once the reg is in place.
My last batch of regs arrived as a 'biscuit' - quite impressed that they stayed that way through the post!
As you can see they're a quarter of the size of the standard regulator:
This seems to be a really stable, repeatable project, I've made loads of them now and they all just work straight away. I just made another S/C emulation setup using a 'Strong' and Franks regulator idea, which makes a really neat job:
I made the NRF connections exactly as the diagrams in previous posts with a 'sideways' servo plug:
...the only untidy bit was tagging on the neg wire to the NRF corner terminal, which is one of the two standoff pins for the regulator:
A few have queried the speed of the link & re-link which I emphasised in the last video
Whilst Frsky is much quicker than Spektrum, it still takes a second or so to re-link. The reason the homebrew NRF is instant is that here is no handshake, GUIDs are already stored and hopping schemes are already known, theres no memory-match exchange, etc... This is one of the reasons I'm not tempted to add a bind handshake sequence, I like having it hard-coded, I like the fact that I can have two transmitters with the same configuration and switch transmitters in mid-flight without even the slightest latency
Even an overlap doesnt bother it - whilst both are 'on' the receiver will choose one tx or the other, until either tx is switched off, nothing catches fire, the sky doesnt fall, theres no magic smoke...