Tactile Push Button 6x6x5mm (Pack of 4)

1Zener Diode, 500mW 18V 5% - BZX79C18

28MM Metal Alligator Clip Crocodile Electrical Clamp Testing Probe Black and Red with silicone boot 

5mm Pin Spacing Right Angle PCB mount Screw terminals. 5mm Pin spacing x 12.6mm(H) 

GT2 6mm belt Idler Pully GT2 20T 3mm Bore Black (bearing Insert)

Dupont Cable 100mm Male to Female, 40way. Ribbon Cable Header strip

The Arduino UNO R3 CH340 is a clone of the standard UNO R3, but avoids FTDI costs with a CH340 USB driver – Affordable, reliable and...

3mm Blue LED Diffused. 

16 Tooth pully for GT2 6mm belt with 5mm bore (typically for...