Circuitboard 3

Components:
-3 x 1kohm carbon film resistors
-1x 470 ohm resistor
-2 x 410 resistors
-3 x 1.7v LEDs (1 green, 1 yellow, 1 red)
-1 x LM324 op-amp
-2 x capacitors
-1 x 9v1 zener diode
-1 x10kohm resistor
-3 x 1N4007 diodes