I need to create a digital controller for a underwater ROV I am making for my Vocational class I take. I have created a prototype of what I want, but I'm kind of unsure of its effectiveness. It sends 10 signals over a single wire from the transmitter to the receiver. Ideally, I want to make this capable of being wireless, but unfortunately, neither wifi nor 2.4 frequencies work, and I dont have any money to put into a nice 750Mhz one. So, I created it in a way that, should I find or make one, it can easily be adapted.
I created a device that sends 10 signals using 3904 transistors at the outputs of a 4017 decade counter, then I provided a clock signal from a 555 IC, tieing together the transistors' outputs into one line. On the other side, the receiver, I used the 4017 decade counter, set at the same clock signal as the transmitter, to decode it by having the one line from the transmitter connect to the collector of ten 3904s. Then, the decade counter to have each output connected to the base of the 3904 on the receiver. It then outputs this signal through the receiving 3904's emitter. I am working with limited supplies. Some things I need to know are:
- How fast can I set my clock frequency without having problems?
- Can anyone see why something like this might have problems?
- Has anyone ever tried this before? And did they have problems?
Also, if anyone has a 750Mhz circuit diagram laying around, can you pass it on?
Thanks in advance,