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InfluxDB
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Hello all! A few years ago I set myself a goal to learn something new (BLE Stack) and also use the skills I already have to start a project that had a lot of constraints and challenges. With this goal in mind I decided to take on modding the classic Casio F-91W to be Bluetooth capable. Here is a little glimpse of some of the work that went into it: My original vision was broken down to three things; have a very simple smart watch that provided notifications from my phone, keep the original look & feel, and long battery life. I was able to achieve two of these, but the battery life sadly was a no-go. I initially started with the intent of using e-paper to maximize battery life, but as development continued it became clear that there currently wasn’t an epaper display that would fit in this case. I even went as far as trying with multiple flexible epaper displays to try and bend them into the case, but they aren’t supposed to be THAT flexible. This resulted in using a tiny little 0.83” OLED display and even that had to be modified (sanded edges down) to fit. With this display and not fully optimized code I was still getting roughly 15 days of battery life. As the project continued I ran into many other design issues and had to make changes along the way. Some issues involved redesigning the PCB to use slimmer connectors and also place components in more efficient locations. Another was the movement holder. I originally thought I can reuse the existing one, but it became more and more apparent that the design of it was taking up too much board real estate. I tried cutting bits and pieces off it, but it was a hassle. This led me to pick up a resin 3D Printer and learn 3D modeling software (Fusion 360). Luckily this was easier than I thought, at least for my needs, thanks to the vast amount of tutorials on YouTube and blogs. You can find more info about this project here: https://gitlab.com/_Pegor/kepler_fw Hopefully this can inspire others to take on a project or even contribute to this one! Overall it was a fun learning experience. Enjoy!