Cyndy and I have been working toward a single-finger tactile switch for her clients to use, and a while back I printed and shipper her a design by Davross: https://www.thingiverse.com/thing:3211154
I got some feedback today, and will be working on a revised button that has different cord options and a lighter activation force!
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Consider wireless; use wireless mouse as inspiration and maybe hack one for parts. I used wired switches before for MR, Stroke, MS patients (lollipop style and big pad) but the cable was a pain. Your design looks well thought out maybe use a set screw on spring for adjustable pressure.
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Thank you for the suggestions tomm! I've discussed wireless with Cyndy from ALSA before, I'll revisit it and see what we can do.
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