3 ms·

Absolutely awful! I'm very glad I didn't wire it straight into the pi but put a connector in the middle so I can replace it. It works and is silent to actuate b

by dmd 2y ago

Absolutely awful! I'm very glad I didn't wire it straight into the pi but put a connector in the middle so I can replace it. It works and is silent to actuate but as you say the ergonomics are bad. I have to reach for it and it rattles around on the bedside table a bit (I've thought of maybe wrapping it in a piece of felt). Your idea sounds great - can you give me a suggestion (e.g. a M-C/Mouser/Digikey part#)? - N2SXX

swalberg 2y ago
I don't know any part numbers but have a look at what the Morserino does (https://www.morserino.info/ https://www.morserino.info/) or this reddit post: https://www.reddit.com/r/amateurradio/comments/ag7xpi/project_super_simple_capacitive_touch_paddles_for/ https://www.reddit.com/r/amateurradio/comments/ag7xpi/projec...
jodrellblank 2y ago
It's not Morse, but the CyKey[1] was a chording keyboard using the MicroWriter chords[2]; advantage that you can feel the keys without looking, and don't have to move your hands. The CyKey had no feedback, no click, silent operation rubbery buttons, IIRC. The CyKey use Infra Red so it would be difficult to use at night, but a similar device - five or six keys wired into an rPi could be very good for this sort of use case. [1] The smaller one of these three https://alchetron.com/cdn/cykey-1e503a20-c830-4bb5-9dcf-7b440e89725-resize-750.jpg https://alchetron.com/cdn/cykey-1e503a20-c830-4bb5-9dcf-7b44... all with the same chord keys for faster typing on a small device. [2] https://siwriter.co.uk/the-chord-codes https://siwriter.co.uk/the-chord-codes this app looks to use the same chords and links to an old intro video: https://www.youtube.com/watch?v=HBM_FwkMMKE https://www.youtube.com/watch?v=HBM_FwkMMKE
_Microft 2y ago
You do not even need anything special to build a capacitive pad with a Raspberry Pi Pico. Basically only an insulated pad and maybe a resistor (even though I think it is even possible to do without). Here is an example of someone building a touch midi controller [0] with nothing more than a custom PCB and some resistors or a touch input device with varied inputs like sliders and buttons [1]. [0] https://github.com/todbot/picotouch https://github.com/todbot/picotouch [1] https://github.com/todbot/picoslidertoy https://github.com/todbot/picoslidertoy
- tdeck 2y ago
  Using a capacitive touch controller in the dark seems like it might be pretty frustrating though.

by dmd 2y ago

swalberg 2y ago

I don't know any part numbers but have a look at what the Morserino does (https://www.morserino.info/ https://www.morserino.info/) or this reddit post: https://www.reddit.com/r/amateurradio/comments/ag7xpi/project_super_simple_capacitive_touch_paddles_for/ https://www.reddit.com/r/amateurradio/comments/ag7xpi/projec...

jodrellblank 2y ago

It's not Morse, but the CyKey[1] was a chording keyboard using the MicroWriter chords[2]; advantage that you can feel the keys without looking, and don't have to move your hands. The CyKey had no feedback, no click, silent operation rubbery buttons, IIRC. The CyKey use Infra Red so it would be difficult to use at night, but a similar device - five or six keys wired into an rPi could be very good for this sort of use case. [1] The smaller one of these three https://alchetron.com/cdn/cykey-1e503a20-c830-4bb5-9dcf-7b440e89725-resize-750.jpg https://alchetron.com/cdn/cykey-1e503a20-c830-4bb5-9dcf-7b44... all with the same chord keys for faster typing on a small device. [2] https://siwriter.co.uk/the-chord-codes https://siwriter.co.uk/the-chord-codes this app looks to use the same chords and links to an old intro video: https://www.youtube.com/watch?v=HBM_FwkMMKE https://www.youtube.com/watch?v=HBM_FwkMMKE

_Microft 2y ago

You do not even need anything special to build a capacitive pad with a Raspberry Pi Pico. Basically only an insulated pad and maybe a resistor (even though I think it is even possible to do without). Here is an example of someone building a touch midi controller [0] with nothing more than a custom PCB and some resistors or a touch input device with varied inputs like sliders and buttons [1]. [0] https://github.com/todbot/picotouch https://github.com/todbot/picotouch [1] https://github.com/todbot/picoslidertoy https://github.com/todbot/picoslidertoy

tdeck 2y ago
Using a capacitive touch controller in the dark seems like it might be pretty frustrating though.