It's Here! Chris Odom's Physical Computing & Robotics with the Arduino IDE - Volume One

Printed ESRA Hardware kit

$6.50

(1) 2 inch long 1/4 inch wide 0.015 wired spring.

(1) 1.8 inch long 1/4 inch wide 0.015 wired spring.

(34) 1/4 inch 4-40 screws

(10) 3/8 inch 4-40 screws

(6) 1/2 inch 4-40 screws

(4) 5/8 inch 4-40 screws

(4) 1/8 4-40 spacers

(1) 4-40 Self-tapping screw