Zener Diode 4V7 1W 5% (Pack of 5)

165x55x10mm

470uF 35V Electrolytic capacitor 

100uF 16V

4 x AA 1.5V Battery Holder Case

Aluminum Heatsink for Stepper Module TMC2100

3mm LED Red light emitting diode, 5 LEDs per pack

Working current: 20 (mA)

Working voltage: 1.7V-2.1V

Inline DC-DC Buck Converter Step Down 4.75V-24V to 1V-17V 1.8A(max < 1 minute) 1.2Amp Constant current.

Handheld Digital Multimeter DT-830B