RileyLink Waterproofing Qi Charging Prototype #001-002
While the RileyLink for OmniPod with Loop.app for iOS is a life changing device, carrying it in a waterproof container is a pain in the ass…
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So we’ve embarked on a little side project to make it be waterproof! There are two issues to deal with, in fitting this into a water tight casing:
1) It needs to charge wirelessly. A few different Qi receivers were purchased directly from China to see the fit because you just never know what you get. The one pictured blow, link, is what we used first:
Of the few different ones we ordered, this particular one had the best size to fit just beneath the LIPO battery. It outputted a steady 5V. We didn’t measure the current.. DUH… (will do it later)
2) it safe for the LIPO battery to be completely encased, allowing no off-gassed materials to escape? Not even sure if LIPO produces any gas. Can it be guided by a small duct – cannula (as people who would be using RileyLink would know this word) – can be made to join the inside and the outside world?
Well, the first prototype is finished and it appears to be working pretty well. We are too lazy to work out the consumption vs the charging time right now but charging whenever we are in the car, using Prius’ onboard Qi charger, seems to be charging the LIPO just fine. It doesn’t do anything with the AppleWatch charger…
It’s ugly but it the wireless charging is working (the bottom plate is a 2.5mm plexiglass).
We are slowing learning the art of vacuum forming… So this may take us a while, to make it into waterproof. Tho’ probably highly not advised to lase ( as in laser) polycarbonate, it is another material we will be testing to vacuum form as well.
The most simple step from #001 to waterproof version would be simply plexi-glue the entire layers together…
As for vacuum-forming, we are hoping to make a more proper die (aluminum as opposed to lased layered MDF?) so it can pop out easier. Definitely we would need to improve on the heating part of the vacuum forming. A heat-gun won’t just cut it… 🙂
The part that meets the bottom plate, we are hoping it to be perpendicular (unlike the version 002 pictured in blue above).
or… Encasing the whole thing in epoxy resin…
Here is the LINK to that PDF above. Not sure how other laser drivers work, we left them all as same 1/2 mm black lines in this PDF. The outer line in double circles are for light engraving to give 2.5mm screw head countersink. The top and the bottom are with the inside shape removed.
FOUND THIS TODAY (11/5/2019): https://medium.com/@sarahspins/hacking-rileylink-for-wireless-charging-6a84529cc04b