OCR 2.54mm Breakaway PCB Board 40Pin Male and Female Pin Header Connector for Arduino Shield,Single Row,20 Pieces Each

OCR 40PCS 2.54mm Male and Female Pin Header Connector 40Pin Single Row Breakaway PCB Board for Arduino Shield

Tnuocke 18PCS 5mm High Knob Vertical Micro Mini Slide Switchs,3 Pin 2 Position 1P2T SPDT Toggle Switches Panel Mount AC 125V 2A SS12D10-G5

Dorhea 10PCS 5V Regulator Module Mini Voltage Reducer Adjustable DC 4.5-24V 12V 24V Step Down to 5V 3A Buck Converter Board Reduced Voltage Regulator Power Supply Transformer Module