Prototype

This is the hardware design for the initial prototype gifted as a birthday present. It's a single sided PCB layout suitable for hand etching at home.

hand etching prototype pcb assembled prototype

You can also download the Gerber files to order PCBs online.

Bill of Materials

These are all the parts required to assemble the prototype.

IDTypeLink
U9Raspberry Pi PicoReichelt.de, Amazon.de
U2TP4056 Charger ModuleAmazon.de
U4, U6, U8MOSFET Module N-ChannelAmazon.de
U3, U5, U7Step-Up Converter ModuleAmazon.de
J2SSD1306 128x64 0.96" DisplayAmazon.de
S1ALPS EC12E24244Reichelt.de
-Cap for encoder knobReichelt.de
D1 - D4LED 5mmReichelt.de
D5 - D81N5819 Schottky DiodeReichelt.de
R1 - R4Resistor 1k OhmReichelt.de
R5Resistor 10k Ohm 0.1% AxialReichelt.de
R6Resistor 18k Ohm 0.1% AxialReichelt.de
SW1 - SW412mm waterproof stainless steel push buttonN/A
SW5AUnknown Power SwitchN/A