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Pulse/Heartbeat Sensor

This is a heartbeat / pulse / PSO2 sensor based on a Silicon Labs Si1143 chip. The chip wasn’t exactly designed for a pulse sensor but it has all the…

HC-SR04 Distance Sensor

These are low-cost Chinese ultrasonic (sonar) distance sensor. They work by outputting an ultrasonic pulse and waiting for a return pulse (echo). They don’t have a lot of the features…

MB1200 XL-MaxSonar®-EZ0

…outputs: Analog Voltage, Serial, Pulse Width Virtually no dead zone, objects closer than 25 cm range as 25 cm Operates from 3.3-5.5V Low 3.4mA average current requirement Small, light weight…