My project is a remote occupancy sensor, Bluetooth connected to a receiving bluetooth/serial. If the remote hardware were to transmit via ascii using UART, that's straight forward, but then requires a microprocessor at the remote end with more complexity and more battery power.
So, before I mock this up, and spend countless hours debugging , can I get your thoughts on a remote hardware scheme configured so that upon occupancy sensed, a 555 timer sends repeating square wave to the HC-05 Bluetooth transmitter ? The square wave would be 10 bits wide @ 9600khz.
Could this square wave be received as an ASCII character, and then interpreted as logical Yes on receiving end ?
Thank you for your thoughts.