One day tutorial session

This page contains the background material for a single (extended) day tutorial. In this tutorial, the students learn how to build a simple SMPS buck converter based LED driver using the Ell-i Arduino + Power-over-Ethernet development environment.

The tutorial consists of four parts: basics of Arduino, what Ell-i brings to Arduino, a few sections on electrical isolation, multi-voltage design, and using an oscilloscope, and finally set of sections that contain the topic-specific material.

Arduino basics

• Arduino Development environment
• Arduino Atmel 8-bit AVR MCUs
• Arduino prototyping with a breadboard
• Arduino basic digital output
• Sensors used in the tutorial
  • [DS18B22 Temperature sensor](Components DS18B22 Temperature sensor)
  • [DHT22 Humidity sensor](Components DHT22 Humidity sensor)
  • [HC-SR04 Ultrasound](Components HC-SR04 Ultrasound)
• Arduino getting input from Sensors

Ell-i additions to Arduino

• Ellduino development environment

Relevant electronics background

• Electronics isolation and multi-voltage design
• Electronics oscilloscope measurements
• SMPS buck converter basics

Building an actual PoE-based LED driver

• LED driver SMPS buck converter components
• LED driver basic assembly
• LED driver forward control PWM
• LED driver forward control testing -- step-by-step guide
• LED driver feedback loop
• LED driver final testing