cw data radio modem
the medicine bottle is a basic crystal controlled cw transmitter. The arduinos job is to be able to turn any cw radio into a low speed data modem. The arduino nano every simply turns a pin on and off which will replace the arcade button. It utilizes a custom OOK data protocol and communicates via serial console on usb. The idea is I should be able to take it wherever and just flip on the switch for the battery, connect it to my phone, and type what i want to send - im thinking of implementing cw too soon and just use a switch or serial command to flip between the two.


10 Replies
git link?
haven't done it yet - would be happy to. The circuit is just a basic crystal controlled oscillator, no smoothing no filter. I'll filter the output rf on the antenna feed line. the code i CAN upload...like today if i remember. Partner is in the ER for a bad migraine and maybe a kidney infection rn so ...priorities. Only reason I'm not with them is I had to find my seizure meds to bring with so I didn't become another problem.
know what? Here's the code - not sure i want to upload it to github. But here's the code. I totally vibe coded it.
well,thanks for telling its vibe coded
Can you please explain what this is? I’m curious 👀 and I don’t understand. Like your explaining this to an 5 year olds
Basically turning text into radio waves to transmit

the crystal is the oscilator
the arduino controls the buffer key
the setup she has doesn't have an amplifier(?) but i also only half undetand whats going on here
the ai code really doesn't help
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this vid has an amazing explanation of how data is sent through radio waves
although
i dont think the arduino has good enough pwm control to control fast.oscillations
it would be very slow
Ok thx