List of Listings

Chapter 1. Bringing JavaScript and hardware together

Listing 1.1. Pseudo-code for temperature-triggered fan logic

Chapter 2. Embarking on hardware with Arduino

Listing 2.1. Example of configuring a digital output pin

Listing 2.2. Setting a digital output pin

Listing 2.3. A complete sketch to blink an LED

Listing 2.4. First Johnny-Five project preparation

Listing 2.5. hello.js

Listing 2.6. Running hello.js in a terminal

Listing 2.7. LED blinking with the Arduino programming language

Listing 2.8. LED blinking with Johnny-Five

Listing 2.9. Using LED callbacks in hello.js

Listing 2.10. Running the altered hello.js script

Chapter 4. Sensors and input

Listing 4.1. Instantiating a new Sensor object with Johnny-Five

Listing 4.2. Logging a sensor’s value

Listing 4.3. Logging values using the data event

Listing 4.4. Photoresistor.js

Listing 4.5. Photoresistor data logging output

Listing 4.6. Sensor freq parameter

Listing 4.7. Logging changing photoresistor values

Listing 4.8. temperature.js

Listing 4.9. Johnny-Five’s REPL

Listing 4.10. What if you want to get information from a Johnny-Five component...?

Listing 4.11. Injecting into the REPL

Listing 4.12. Altering temperature.js to use REPL injection

Listing 4.13. button.js

Chapter 5. Output: making things happen

Listing 5.1. experiment-led.js

Listing 5.2. Steps for animating components in Johnny-Five

Listing 5.3. Animation options for pulsing

Listing 5.4. animate-led.js

Listing 5.5. Animation instantiation and enqueuing