First, let's prepare with all the things that you will need to build the Romi Robot and the Robot Controller. Here is the list of things:
- 1 x Romi Chassis Kit (https://www.pololu.com/category/203/%20romi-chassis-kits)
- 2 x Adafruit Feather HUZZAH ESP8266 (https://www.adafruit.com/product/3046)
- 1 x DC Motor + Stepper FeatherWing Add-on (https://www.adafruit.com/product/2927)
- 1 x FeatherWing Doubler (https://www.adafruit.com/product/2890)
- 1 x Extra-long break-away 0.1" 16-pin strip male header (https://www.adafruit.com/product/400)
- 4 x Push buttons (https://www.sparkfun.com/)
- 2 x 2000mAh 3.7 Li-Poly battery (https://www.adafruit.com/product/2011)
- 1 x Breadboard
- 4 x Rechargeable NiMH AA batteries—1.2V, 2200 mAh (https://www.pololu.com/product/1003)