Not a fan of anything with an OS and app due to reliability. A hardware=20 solution will let me sleep better at night. :) And coincidentally, in the essence of time, 2-way audio and one-way=20 video will be done by 2 phones (iOS or Android) with Facetime or=20 equivalent, but that'll be changed to a more direct FPV-type system soon=20 after. Cheers, -Neil. On 6/15/2018 8:50 AM, Adam Field wrote: > On Thu, Jun 14, 2018 at 4:07 PM, Neil wrote: > >> Though I would prefer a pre-built device (as I'm on a very tight >> schedule), I'm tagging this as EE in case anyone has a good circuit or >> kit) for this. >> >> > If you have an old Android, there looks to be voice changer apps on the > play store, some advertise playback over headphones and not just for > calling. I haven't used any but it would only take a few minutes to > experiment. You could then cut the earbuds off a headset and wire an > external amp. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .