GEAR - Geauga Engineering and Robotics

## Lessons for First Year Seniors

Lesson 1 - electricity - This is the first lesson for members new to the older group. It incorporates activities from level 3 of Junk Drawer Robotics, Module 1: Circuit Training (Activity A - Series/Parallel). Members will build series and parallel circuits using batteries and light bulbs. This will lay a foundation for Ohm's Law, which will be explored in more depth in Lesson 4.

Lesson 1 - Using a Multimeter - This paper covers methods for making measurements with a multimeter.

Lesson 1 - engineering holiday lights - This paper covers an aspect of series and parallel circuits at an advanced level. In addition, there is an advanced treatment of incandescent light bulbs. Consider this material supplemental to Lesson 1.

Lesson 1 - Atoms and Materials for Engineering - this paper covers atoms, the periodic table of elements and various aspects of materials as they relate to engineering. Consider this material supplemental to Lesson 1.

Lesson 2 - switches This lesson incorporates activities from level 3 of Junk Drawer Robotics, Module 1: Circuit Training (Activity B - Off and On). Members will build circuits containing switches in various configurations.

Lesson 3 - direction of current flow This lesson incorporates activities from level 3 of Junk Drawer Robotics, Module 1 (Activity C - Direction of Flow, Activity D - Forward and Reverse Design Team, Activity E - Forward and Reverse Build Team). Members will build circuits containing DC motors and LEDs to explore direction of current flow.

Lesson 3 - LEDs - this is a supplement to Lesson 3 that describes some properties of LEDs and how to protect an LED with a voltage-dropping resistor

Lesson 3 - LED data sheet - to accompany the LED paper

Lesson 4 - resistors - this lesson covers resistors, including series and parallel circuits.

## Line following robot

Data sheet for red LED used in this lesson.

Data sheet for switch used in this lesson.

Data sheet for photoresistors used in this lesson.

Data sheet for R3 potentiometer used in this lesson. This data sheet covers several types. The one we are using is PV36W with drawings on pages 67 and 69 of the data sheet. This is a 25 turn pot, which means you must turn the screw 25 turns to achieve the full range of resistance adjustments possible.

Resistor exercise This exercise is designed to help members understand the photoresistor circuit.

Data sheet for LM393 IC chip used in this lesson.

Data sheet for green LED used in this lesson.

Data sheet for yellow LED used in this lesson.

Data sheet for transistors used in this lesson.

Lesson 5, DC Motors This is the last lesson for breadboard wiring. After this you will learn to solder and start building your real robot!

Data sheet for Schottky diode used in this lesson.

Data sheet for motor used in this lesson.

Another data sheet for motor used in this lesson.

And a third data sheet for motor used in this lesson.

Manufacture of a magnet Here is a nice video covering a manufacturing process for permanent magnets

Lesson 7, Final assembly of robot - This is the last lesson for the line-following robot.

Robot Frame This document provides the construction details of the robot frame.

Schematic of breadboard circuits (except power circuit)

The lessons above will prepare our members to build Sandwich, a line following robot, found in the book "Robot Building for Beginners" by David Cook.

The "official" multimeter of the club is Extech Electronics model MN35. CLICK HERE to open the manual for the meter.

If you would like to see this robot in action, there are several videos on YouTube.
Here is one
Here is a web page about the robot.