SparkFun Piezo Vibration Sensor Small Vertical - Flexible Film photon It uses CSR Bluecore4-external single

It uses CSR Bluecore4-external single chip Bluetooth system with CMOS technology and with AFH (Adaptive Frequency Hopping)

NFC requires a minimum of two devices: one for broadcasting and the second for receiving the signal

const int BUZZER = 8

You can also compare it with Metal DC Geared Motor 12V 50RPM 50kg-cm

12v Product URL https://circuit

SparkFun Piezo Vibration Sensor Small Vertical - Flexible Film photon It uses CSR Bluecore4-external singleCompact Vertical Vibration Sensor for Taps and Motion Events The Piezo Vibration Sensor Small Vertical is a compact cantilever style vibration sensor for tap input, motion sensing, and low frequency vibration detection. This version mounts vertically and uses a small mass loaded design to improve sensitivity at lower frequencies. It is a clean option when you need a small event sensor on a tight board layout. Important: Piezo sensors produce an AC