Swimming Tempo Trainer

I’m thinking of designs for the waterproof case, and how to make sure you can still press the buttons. I spent like an hour trying to find a proper button case, but nothing would fit the model I use. Luckily, I’ve come up with two different options that both look pretty good [in theory haven’t tested it yet]. For the first one, I would have to cut out small rectangular pieces of silicone and glue it. But the second one is just a big piece of silicone that is held together by the two halves of the case.

Finally finished the PCB on EasyEDA!! The last time I ordered a PCB for this project, after I soldered everything I realized it didn’t work. So this is the second try, and I really hope it works. I’ll start designing the waterproof case while I wait for JLCPCB to ship them.