Chapter 8. Projects without wires

 

This chapter covers

  • Why hobby electronics projects need wires, and how to get rid of them
  • Using Johnny-Five with different I/O plugins on different platforms
  • Configuring and working with the Tessel 2 development platform
  • Adapting to 3.3 V logic levels and different pin configurations
  • Deploying code wirelessly to the Tessel 2
  • Taking advantage of the Node.js and npm ecosystem to create more complex software for the Tessel 2
  • Using batteries to go fully wires-free with the Tessel 2

For this chapter, you’ll need the following:

  • 1 Tessel 2 development board
  • 1 USB A to USB micro cable
  • 1 standard LED, any color
  • 1 100 V resistor
  • 1 Adafruit BMP180 multisensor breakout board
  • Any one of the following:
    • 3 female header pins
    • 2 lengths of 22-gauge, solid-core wire
    • 9 V battery and snaps
  • Soldering iron and supplies
  • 1 USB 5 V wall charger or similar, to power the Tessel 2
  • 1 USB battery (sometimes called a power bank)
  • Jumper wires
  • 1 half-size breadboard
  • Roving robot (motor-driving circuit and chassis) from chapter 6

8.1. Why you’ve been tethered so far

8.2. Toward wires-free projects using the Tessel 2

8.3. Getting your Tessel set up

8.4. Projects without wires on the Tessel

8.5. Powering projects with batteries

Summary