Control a Gear Motor with an NPN Transistor and a Raspberry Pi Pico

Description: Since the GPIO pins on the Raspberry Pi Pico do not have enough power to turn on a Gear Motor, an NPN Transistor (2N2222) connected to 5V is used as a switch. A small amount of current sent when GPIO pin 1 is HIGH opens the NPN transistor to divert 5V of power to the Gear Motor. And when GPIO pin 1 is turned OFF, the NPN transistor closes the 5V of power.

Notes: The 1N4004 Rectifier Diode is connected to the GND and Power Pins of the Gear Motor to prevent any voltage spikes from back EMF.

Supplies:

1 – Breadboard 830 Points   >> Link <<
1 – Raspberry Pi Pico   >> Link <<
1 – NPN Transistor (2N2222)
1 – 5V N20 DC Gear Motor   >> Link <<
1 – 1N4004 Rectifier Diode   >> Link <<

Arduino Code:

#define motor 1

void setup() {

  pinMode(motor, OUTPUT);

}

void loop() {

  digitalWrite(motor, HIGH);
  delay(1000);
  digitalWrite(motor, LOW);
  delay(1000);

}