Things you will need
First, let's prepare all the components that you will need to build the line-following robot:
- 1 x Zumo Chasis Kit (no motors) (https://www.pololu.com/product/1418)
- 2 x 100:1 Micro Metal Gearmotor HP 6V (https://www.pololu.com/product/2191)
- 1 x Basic Sumo Blade for Zumo chassis (optional) (https://www.pololu.com/product/1410)
- 4 x Rechargeable NiMH AA battery: 1.2 V, 2200 mAh, 1 cell (https://www.pololu.com/product/1003)
- 1 x FeatherWing Doubler - Prototyping Add-on For All Feather Boards (https://www.adafruit.com/product/2890)
- 1 x Assembled Feather HUZZAH w/ ESP8266 Wi-Fi with Stacking Headers (https://www.adafruit.com/product/3213)
- 1 x DC Motor + Stepper FeatherWing Add-on For All Feather Boards (https://www.adafruit.com/product/2927)
- 1 x Lithium Ion Battery - 3.7V 2000mAh (https://www.adafruit.com/product/2011)
- 1 x Extra-long break-away 0.1" 16-pin strip male header (5 pieces) (https://www.adafruit.com/product/400)
- 1 x Ceramic capacitor 3-pack 0.1uF 100V (https://www.pololu.com...