Ok, so I’ve been playing violin for around 8 years now, and I finally decided to get a 5-string electric one. However, I find that preamps and effect pedals, especially ones actually intended for violin, are rather expensive. The same is true of page turner pedals. So my goal here is to design one that is far cheaper, has more features, and can be customized. I also wanted to implement a wireless page turner and power it with a rechargeable battery. So to start, I made a power management sheet. It takes in USB-C power, charges a 3000 mAh battery, and converts it to a +5V, +9V, and -9V.