First of all, my new design of the PCB. Actually PCBs, because we need 3 of them. The controller PCB, the PCB for the OLED screen and a smaller PCB for the USB input for the battery charger. If you want to make this awesome project and challenge yourself you can download my GERBERs for the PCB from below. As always I’ve used the services of PCBWAY to create these awesome boards. Once you have my files, go to PCBWAY.com and click the quote now button. Here select your settings. I leave all by default and I set the color to red. On the next page upload the GERBERs and make the payment and in just a few days I received my PCBs. This design turned out awesome, is small and with a weird shape and let me tell you why.