Introduction to microcontrollers and electronics
Electricity is the movement of electrons. Electrons create charge, which we can harness to do work. Your light-bulb, your stereo, your phone, etc., are all harnessing the movement of the electrons in order to do work. They all operate using the same basic power source: the movement of electrons.
There are three basic principles to electricity
- Voltage is the difference in charge between two points. (The pressure)
- Current is the rate at which charge is flowing. (Flow)
- Resistance is a material’s tendency to resist the flow of charge (current).
Basic Electrical Components
Using Ohm's law to check the max current in the circuit.
LED specs: -2V and 20mA or 0.02A Max
Building the Circuit
Resistors in parallel and series
Using a microcontroller
Using a microcontroller to control an LED
Using a microcontroller to control a speaker
Connecting the 8x8 LED matrix