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low power controller from Microchip
0 Interface ( 3 foot patch )
Temperature range : from -40 °C to +125 °C
the resistor is actually a small strip of Platinum with a resistance of 100 ohms at 0°C
Ultrasonic Sensor ( Distance Measuring Module ) Breakout low power controller from MicrochipIntroduction: HC SR04 ultrasonic module can offer non contact distance sensing function, the range from 2cm to 400cm. and the range accuracy is up to 3mm; the module includes ultrasonic transmitter, receiver and control circuit. The sensor measures distance using sonar; an ultrasonic (well above human hearing) pulse is transmitted from the unit and distance to target is determined by measuring the time required for the echo return. The module is based
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