Adapter for 4mm D-shaft Potentiometer to 6mm Knurled Knob.
Convert A 4mm Potentiometer Axle Into A 6mm With This D-Shaft Adapter. Simple And Effective, Low Cost.
Inside Shaft / Bore: 4mm D-Shaft, Outer Diameter: 6mm Knurled, Length: 9mm, Color: White, Quantity: 1pc.

Hex Inverting Buffer/Converter

CMOS Voltage Converters

This RS232 circuit can be used to interface a microntroller to a PC via a RS232 connection (serial port). This circuit converts signals between RS232 voltage levels and TTL voltage levels. It is bi-directional, where TTL signals are converted to RS232 levels and RS232 levels are converted to TTL levels. The circuit can be assembled with any MAX232 compatible RS-232 Transmitter/Receiver chip.

BNC Male to RCA Female Adaptor