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How about taking an analog to digital reading from 16 devices with only 1 ADC channel and 4 control pins
a networkable and programmable full-color RGB LED for hobbyists
EF-500 DG ST
200" (5mm) up to 0
SparkFun Piezo Vibration Sensor - Large Flex / Force Lens Accessories How about taking an analogThis basic piezo sensor from Measurement Specialties is often used for flex, touch, vibration and shock measurements. A small AC and large voltage (up to + 90V) is created when the film moves back and forth. A simple resistor should get the voltage down to ADC levels. Can also be used for impact sensing or a flexible switch. Comes with solderable crimp pins. Features: Flexible PVDF Piezo Polymer Film Wide dynamic range Laminated for higher voltage
US$ 15.00
US$ 12.00
US$ 145.00
