Before starting assembly
- Check the components are complete. See BOM.
- If you are not used to soldering, learn how to solder components.
Zener diodes (D49,50)
Solder resistors. Don't place on R5 and R6. (They are for i2c)
|R5,6||I2C||Do not place|
Diodes 1N4148 (D1-48)
There are 2 kinds of lead pitch.
Electrolytic capacitor(C3) and Resettable fuse(F1)
Electrolytic capacitor is a
polarized component and therefore take care of direction.
A short leg is cathode. (square pad on pcb)
Tactile Switch(SW50,51) and pin header
Insert ATMEGA328P into IC Socket.
Check list before connect USB
- No short between VCC and GND, USB connector pins.
- Direction of polarized components.(ATMEGA328p, diode, resettable fuse, electrolytic capacitor)
- Resistor value