There is a total of 5 resistors in this kit. For resistors labeled R1 and R2 on the PCB, they are 1/4W 5% 4.7K resistors (Yellow, Violet Red, Gold). For resistors labeled RED and BLUE on the PCB, they are 1/4W 5% 220 ohm resistors (Red, Red, Brown, Gold). For the resistor labeled GREEN on the PCB, it is a 1/4W 5% 330 ohm resistor (Orange Orange Brown Gold).
There is one 10k trim potentiometer. This part will go in the spot labeled Contrast, near the RESET button. Note: The pot may be blue instead of orange.