My battery capacity is only 120mAh which is about the biggest I could get to fit my design, and it's re-chargeable. Circular enclosures are a bit of a pain to fit stuff into.
I guess I could get more life out of the battery if I set the under voltage limit lower in my code, but to be safe, I have it stop displaying the time when the battery gets to 3.3v. I haven't tested how waterproof my watch is yet. I designed it so it should be pretty water tight. The bottom fits to the top with a small lip, which was a nice snug fit when I finished machining, but after anodising, it is an extremely tight fit. I was originally going to have a tiny o ring in a groove, but I decided it was going to be too difficult to do in such a thin wall. When I attached the front part of the watch to the back, I smeared a small amount of Vasoline around the lip, just to help keep out moisture. The glass is glued in, so should be water tight there and the micro USB port on the back for charging has an o ring around it to keep out the water. I don't plan on going in the water with the watch, (especially not surfing) but I'm pretty confident it will be fine in the rain. I don't have any external buttons on the watch so there ain't a chance of water leaks there. Just out of interest, to set the time you do... Tip watch fully to the left for 3 seconds, then to right (within 1 second) and hold it there for 3 seconds (but no longer than 6), then tip it fully to the left again for 1 second. The watches flashes the battery voltage (for example, 3.8v will be displayed as 38) The watch is then in setup mode. The watch is tipped left and right to move through the basic menu and is tipped forward to accept. If the watch is in the setup mode for more than 30 seconds without the 'accept' being used, it exits back to normal operation. This is in case you somehow get into the setup mode by accident. I've tried to make it pretty tricky to actually enter setup mode. In the setup menu, you can only set the time and the date. I didn't bother with a setting for viewing angle, as it's a one off watch for me and I have hard coded where I want it to display the time. Anyway, I've been wearing it now for 3 days with no problems. It's going to be interesting to see how long the battery will last in real life operation. I would like to think at least 2 weeks before it needs charging, but as it only takes 1 hour to charge the battery, it wouldn't really matter if it only lasted a week on a charge really. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/67a2a398-4be2-4a13-b3c8-ed40e40f6952%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
