Students learn the configuration of the Arduino, breadboard and the bluetooth.
Students learn how to connect the Arduino to the bluetooth using a breadboard
The Arduino Uno can be connected directly to the HC-05 Bluetooth device, however because a number of sensors may possibly be connected to the Arduino, it is better to connect the two devices using a breadboard. A breadboard will allow for multiple sensors and the Bluetooth to be connected to the power and electrical ground connections of the Arduino.
Activity 1 (10 minute budget)
Teacher explains the Arduino and Bluetooth configuration, and the purpose of the breadboard.
1. Teacher reminds students about the parts of a computer from unit 1 (slide 1), and identifies the similar parts of the Arduino Uno (slide 2). The teacher then shows the Arduino connected directly to the Bluetooth identifying the ground and 5 volt connections (slide 3).
Teacher asks the class, "how can we connect 3 sensors to the Arduino if they all have to have a ground connection?" (The correct answer is that you can't because the Arduino only has 2 ground connections, unless you use additional wires or a breadboard).
2. Teacher shows the next slide and explains the breadboard connections and hands out the same breadboard handout image to each group.
Activity 2 (1 hour budget)
Students connect the Arduino to the Bluetooth using a breadboard.
1. Teacher hands out Arduino, Bluetooth, breadboard, and jumper wire kits to students, and connection configuration handout. Students use jumper wires to connect components.