I commute to and from London 4 days a week. There's an hour on the train each way. I can only do so much CW training. What I need is something that connects to the phone to allow an easy CW QSO or two. iCW is close, but doing that with a computer and all the gubbins is a bit too much to set up. So I was thinking about this:
How about a raspberry pi mumble icw box - wifi tether to phone; jack for key and headphones and a knob for maybe 20 icw channels to select from - would any of you use one of those? I want something like this for my commute and might have to make it.— Grae G0WCZ (@G0WCZ) April 27, 2018
What sort of small black box can I make that will wifi to my phone hotspot, have a plug for key and headphones and micro USB for power (or have battery brick inside.) It'd have just one big knob for channel selection and a couple of LEDs to indicate connection status.
What would that be? First thought is a Raspberry Pi Zero W with the headless Mumble client by Daniel Chote: https://github.com/dchote/talkiepi and a bit of work to interface a key and add a hacky headphone output.
So, that's the basic idea. I'll see where experiments take me.