5 Pcs Piezo Discs 10mm Acoustic Pickup Transducer Element Trigger Buzzer CBG Guitar
5 Pcs Piezo Discs 10mm Piezo elements come in handy when you need to detect vibration or a knock. You can use these for tap or knock sensors pretty easily by reading the voltage on the output. They can also be used for a very small audio transducer such as a buzzer.
Arduino Nano V3
250K ohm Trimmer Trim Pot Variable Resistor 3296
Quadcopter Frame - F450 V3
LCD I2C Module IIC/I2C Serial Interface Adapter
Arduino Leonardo R3
1S 800mA battery
MQ135 Air Quality Detector Sensor Module
OPTOCOUPLER 817 SINGLE
Variable resistor 250K
100K Potentiometer (Pot)
Pressure Sensor MPX5700AP 





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