Wiring 2N7000 AN10441 as Logic Level Converter for i2C Protocol Devices

Other micro-controller uses 5v as standard input voltage, many latest device modules, popular sensors, GPS, RF modules, Flash Memories, SPI storage, Display, use 3 to 3.3v  most of this devices requires logic level conversion to protect them from high voltage

Wiring MOC78XX, H206, GP1A57HRJ00F Opto-interrupter for Motor Speed, Direction, Detection Control

This is the photo interrupter also known as photogate, photodiode, or phototransistor. Phototransistors are specially designed transistors with the base region exposed these transistors are light sensitive, especially when an infrared source of light is being used. Phototransistors it has

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