EFA:001 – Getting Started, Ohm’s Law, How to read schematics

What Is in Your Kit?

You have a little box of goodies for the course. Here is a list of the important things that you should have.

Basic stuff

  • Arduino Uno
  • USB cable
  • Breadboard
  • 9V power supply
  • DC power adapter (2.1mm to screw terminal)
  • Some jumper wires
  • Alligator clip cables

General components

  • LEDs
  • LDR (light sensor)
  • Momentary push buttons
  • Resistors (different values)
  • Capacitors (different values)
  • Small signal diodes 1N4148
  • Schottky diodes 1N5819
  • Bipolar junction transistors PN2222
  • Darlington transistor TIP120
  • Diffused Neopixel RGB LEDs


  • 7805 – 5V Voltage Regulator
  • 555 – Timer Chip
  • L293D – Dual H-Bridge Motor Driver
  • 40106 – Schmitt Trigger Inverter
  • 4017 – Decade Counter
  • 4093 – Quad 2-Input NAND Schmitt Trigger

Cocomake Kit

One of the assignments for the course is a soldering exercise. You will get the parts and a PCB for making a Cocomake board. It is an ATtiny85 based circuit that uses capacitive sensing as an input and appears to the computer as USB device (keyboard or MIDI device).

  • A Cocomake PCB
  • ATtiny85
  • USB connector
  • Resistors
  • LEDs
  • Diodes
  • Capacitor

Getting Started

We will go through some common concepts, components, and tools:


I have been using Fritzing to draw most of our circuits in a breaboard view. It is great for simple things, but anything more complicated gets a little bit difficult to illustrate. Therefore, we should learn how to read schematics.