Quantity   Component name
1 × IC1: ATTINY26 microcontroller
1 × SP1: BJM 05, Z=40 Ohms 5V magnetic transducer
3 × LED1, LED2, LED3: low current LED your choice of red, green or yellow
1 × S1: DIP switch 2 switches or jumper bridges
2 × C1, C2: 100nF capacitor foil or ceramic >5V
1 × C5: 10µF capacitor electrolytic >5V
1 × R1: 1M resistor 1/4 W
1 × R3: 100 Ohms resistor 1/4 W
1 × R4: 10k resistor 1/4 W
3 × R5, R6, R7: 680 Ohms resistor 1/4 W
2 × R8, R9: 22k resistor 1/4 W
1 × R10: 33k resistor 1/4 W