U-Bolt

1/4" (Garber)

3/8"

S-Curve

S-Curve Corner Bracket (Garber Hardware)

Timing Belt & Pulley

 

for use with:

48" P(itch)L(ength), 3/8" P, 1/2" W(idth) belt (Amazon)

for use with:

48" PL, 3/8" P, 3/4" W belt (Amazon)

Ball Bushing

3/8" (Amazon)

for use with:

3/8" D(iameter), 48" L(ength) rod (Grainger)

1/4" (Amazon)

1/4" (Grainger)

for use with:

1/4" D, 48" L rod (Grainger)

Folding Table

Pinewood-type Folding Table (Muji)

Bipolar Stepper Circuit

Bipolar Stepper Motor
Arduino
Dual H-Bridge

add: 2x 1kΩ Resistor
2x 10kΩ
2x NPN Transistor

Dual H-Bridge: L293DNE

An H-Bridge is an integrated circuit chip that allows electricity to pass across an element in either direction (+V ↔ Ground). It is made of four switches, either solid state or mechanical.

L293DNE: 4-Channel Motor Driver 16-Pin Plastic Dip Tube (Jameco)