PWM on BatSTEM Academy

L4: Variable-brightness LED

Wed, 02 Apr 2025 00:00:00 +0000

Variable-brightness LED

What you will learn in this lesson

In this lesson, we will cover:

Controlling the brightness of an external LED from the development board.
PWM outputs: what they are and what they are used for.

Prerequisites

To follow this lesson, you should have already completed Lesson 1: My first project, Lesson 2: The LED diode and Lesson 3: The LED diode (2). In this lesson, we will use the same type of circuit as in the previous lesson, but we will learn to control the LED using more values than just on and off.

L5: The RGB LED

Wed, 02 Apr 2025 00:00:00 +0000

The RGB LED

What you will learn in this lesson

In this lesson, we will cover:

What an RGB LED is and how it works.
Additive colour mixing.
Controlling the LED’s colour and brightness from the development board.

Prerequisites

To follow this lesson, you should have already completed Lesson 1: My first project, Lesson 2: The LED diode, Lesson 3: The LED diode (2) and Lesson 4: Variable-brightness LED. In this lesson, we will use three outputs on the board to control the three colours of a single component.

P2: Control the RGB LED from your computer

Thu, 16 Jul 2026 00:00:00 +0000

Control the RGB LED from your computer

What you will review in this project

In this project, we will combine what we have learned in previous lessons:

Controlling the red, green and blue channels of an RGB LED.
Receiving and sending text through the COM port.
Using a variable to store a message.
Using conditions to decide what to do based on the command received.

Prerequisites

This project puts into practice the concepts learned in L4: Variable-brightness LED, L5: The RGB LED, L6: The serial port and L7: The pushbutton.