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Assembly guide

Step 1: Solder the resistors to the PCB.​

Solder the 330 Ohm resistors to the PCB on pins marked R1 to R4. their orientation doesn't matter.

Markings for the 330 Ohm resistor
Markings for the 330 Ohm resistor
Highlighted pins for resistors R1 to R4
Highlighted pins for resistors R1 to R4

Step 2: Solder the switch​

Solder the switch on pins marked S5, orientation doesn't matter.

Highlighted pins for switch
Highlighted pins for switch

Step 3: Solder the LEDs​

Solder the LEDs on pins marked L1 to L4. Keep in mind that the LED's cathode (-) is on the left pin, and anode (+) is on the right side!

Marked pins on LED
Marked pins on LED
Highlighted pins L1 and L2 for LEDs
Highlighted pins L1 and L2 for LEDs

Step 4: Solder the pushbuttons​

Solder the pushbutton on pins marked S1 to S4, orientation doesn't matter.

Highlighted pins for pushbutton
Highlighted pins for pushbuttons S1 to S4

Step 5: Solder the CR2032 battery holder​

Rotate the pcb on its back side up and align the holder with drawn topology on pins marked BAT.

Highlighted pins for pushbutton
Highlighted pins for pushbutton