I know this is way late, but obviously I saw this from the 2020 contest posting and was browsing through the links provided by the OP and, I have to say, this is amazing. I am a newbie, I am slightly “handy” as in a have a SMALL, home shop woodworking shop and some basic metal tools and have only been into flashlights for 6 months but I wanted to consider this contest, and you have inspired me to maybe give it a go. I still know very little about electronics. Amazing Job!