有没有工程工具可卖
power
3x AA battery side by side holder
3x AA batteries
hookup wire
1k trimpot
Resistors 1/4W2x 100R
2x 270R
2x 330R
2x 1k
2x 10k
1x 470k
1x 1M
1x 1.8M
4x diodes (1N4007)
2x 3mm red LEDs
Low torque 4.5 V DC hobby motor
2x 1uF MKT capacitors
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