Introduction

3. Materials

1. GoPiGo3, with batteries
2. A wifi-enabled laptop or computer
3. A black line follower sensor
4. A light and color sensor with 2x sensor mounts
5. Lego and craft materials for color sensor mounting, the postman & card holder
6. For the experiments & calibration:
1. a printed straight line template sheet from the line_follower_template file.
2. a printed color calibration sheet
3. white paper and colored pencils or markers

1. For the challenge:
1. a selection of printed line follower template sheets:
2. 1x red, 1x green and 1x blue line follower junction template sheets
3. 3x yellow and 3x fuchsia driveway template sheets
4. 3x postcard sized white cards and colored markers for the mail
5. scissors, tape for sticking sheets together