Sorry Dave, I did read your post about transmitting voltages and I did understand it, what I said earlier about transmitting 4.5V, I didn't mean exactly 4.5V.. Still not sure I've grasped the concept on how/what data gets sent though.
I thought that if I connected the input to the transmitter to ground, the output from the receiver would be very low e.g. <0.6V. Similarly if I connected the input to the transmitter to Vcc (4.5V) I would get a higher output from the receiver e.g. > 3.6V.
This is the transmitter I used along with the data sheet:
http://uk.rs-online.com/web/p/radio-telemetry-data-modules/6171906/
This is the receiver I used along with the data sheet:
http://uk.rs-online.com/web/p/radio-telemetry-data-modules/7154066/
Btw, what you said about a string of pulses, that makes a lot of sense to me and I plan to implement something similar to that once I understand how the trans/rec works!
I did actually draw a quick circuit diagram last night, then realised I couldn't upload it straight off my hard drive!
I thought that if I connected the input to the transmitter to ground, the output from the receiver would be very low e.g. <0.6V. Similarly if I connected the input to the transmitter to Vcc (4.5V) I would get a higher output from the receiver e.g. > 3.6V.
This is the transmitter I used along with the data sheet:
http://uk.rs-online.com/web/p/radio-telemetry-data-modules/6171906/
This is the receiver I used along with the data sheet:
http://uk.rs-online.com/web/p/radio-telemetry-data-modules/7154066/
Btw, what you said about a string of pulses, that makes a lot of sense to me and I plan to implement something similar to that once I understand how the trans/rec works!
I did actually draw a quick circuit diagram last night, then realised I couldn't upload it straight off my hard drive!