[Tweepy] wanted to measure and quantify this effect, and found a way to do so with an NPN phototransistor, a resistor, and a 3.5 mm audio plug. The phototransistor and resistor take the place of a ...

The Sharp GP2Y1010AU0F optical dust sensor is a small (46.0 × 30.0 × 17.6 mm) lightweight (~15g) air quality sensor containing an infra-red LED and a phototransistor capable of detecting air ... Make ...

[2] – The Edge Detector: The edge detector used consists of an Infrared (IR) LED adjacent to a phototransistor. [3] – The Colour Sensor: The colour sensor consists of two parts: 3 differently coloured ...

Accelerometer,Arduino,Blood Glucose,Blood Glucose Levels,Bus Drivers,Conductive,Digital Workplace,Electrocardiogram,Electrode,Glucometer,Glucose Concentration,Glucose ...