We can use the AdafruitIO dashboard to post messages to our MQTT feed, and so we'll use an LCD to show what we've sent. We'll also wire up a button that will send an MQTT message when pushed.
Project – adding an LCD and button to see and send MQTT events
by Kassandra Perch
Hands-On Robotics with JavaScript
- Title Page
- Copyright and Credits
- Dedication
- Packt Upsell
- Contributors
- Preface
- Setting Up Your Development Environment
- Creating Your First Johnny-Five Project
- Building Interactive Projects with RGB LED
- Bringing in Input with Buttons
- Technical requirements
- Using inputs in robotics projects
- The Johnny-Five button object
- Wiring up buttons
- Adding buttons to our RGB LED project
- Summary
- Questions
- Further reading
- Using a Light Sensor to Create a Night-Light
- Technical requirements
- Using an analog sensor with the Pi
- The ambient light sensor
- Creating our night-light
- Summary
- Questions
- Further reading
- Using Motors to Move Your Project
- Using Servos for Measured Movement
- The Animation Library
- Getting the Information You Need
- Using MQTT to Talk to Things on the Internet
- Building a NodeBots Swarm
- Technical requirements
- Project – connecting multiple NodeBots
- Expanding your NodeBots knowledge
- Continuing on your NodeBots adventure
- Summary
- Assessments
- Other Books You May Enjoy
Project – adding an LCD and button to see and send MQTT events
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