Passive Buzzer 5v
Pay attention, this is a buzzer, not an active one, so if you connect a voltage of five volts to it, it will not make a sound, and in order for it to make a sound, a frequency must be issued to it, and not a constant voltage
It works like a mini stethoscope
If you want to connect 5 volts, it will make a sound, you must use
741 op amp LM741 Operation Amplifier
L293D IC motor drive IC Dual H-bridge
XOR Gate 74LS86 IC 7486
Resistor 10K Ohm 1/4W
Variable Resistor Kit 13 Values-Single Turn Potentiometer preset 65 PCS
Heat Sinks for Raspberry Pi 













