Do you hunt around for different materials to use for the board? As long as it ... example our searches turned up of circuits involving mostly basic components being applied to 3D printed ...

No user-serviceable parts inside? Give me a break! The head unit is tough to get to, but the PCBs within the chassis use ...

can be connected together to form a circuit. A circuit diagram shows how the components are connected. The following symbols show the different components that can be found in an electrical circuit.

Zeros from the third band of the resistor (the multiplier) can be added behind these numbers, eg 100 becomes 1,000 (× 10), 330 becomes 33,000 (× 100), etc. E12 resistors have a tolerance of 10 ...