Alex has kindly sent me the latest upgrade to his wireless Arduino project.
"The above project is an improvement on the previous one with the same title.
Part I (1st November 2023) used solderless stripboards and jumper leads, and although the receiver had an LED which came on after a successful transmission/reception of a signal, it was not possible at the transmitter end to know whether this had occurred. Part II has overcome this problem by incorporating a flip-flop in the Tx circuit, which parallels the LED at the Rx end.
I hope the photographs are clear."
Regards
Alex Henderson M0TOT