Breadboard Power Supply
Supplies power to a breadboard, available to be used by electronic components plugged into it.
Transistor (PN2222)
About
One of the most fundamental applications of a transistor is using it to control the flow of power to another part of the circuit – using it as an electric switch. The transistor can create the binary on/off effect of a switch.
A small transistor like the PN2222 can be used as a switch that uses just a little current from the Arduino digital output to control the much bigger current of a motor.
The transistor has three leads. Most of the electricity flows from the Collector to the Emitter, but this will only happen if a small amount is flowing into the Base connection. This small current is supplied by the Arduino digital output. (Adapted from Sparkfun and Adafruit)
Starter Code
Resources
https://create.arduino.cc/projecthub/glowascii/transistors-for-robotics-arduino-basics-2cf124
https://learn.sparkfun.com/tutorials/transistors/applications-i-switches
https://learn.adafruit.com/adafruit-arduino-lesson-13-dc-motors/transistors
