Hi Everyone,
In this blog we are going to see unboxing the new KEMET Vibration sensors with some hands on experiments on it.
I received the Sensor along with a couple of Development boards , STM32H743 Nucleo 144 Kit and BLE Nucleo expansion board but for my application I decided to use a different board.
1. KEMET Senor ( Datasheet)
2. Bluetooth Audio Kit (Details)
3. Bar LED's (Datasheet)
As the first step I did the unboxing of the sensor in my usual way. The sensor was metallic sealed with 10 feet length of cable. There is a small 3 pin connector for power supply and signal.
It's a bit difficult to connect with standard wires so I used some thin wire for connecting the sensor. Three pins are Vin (RED), Vout (WHITE) and Gnd (BLACK).( Vin is 3v to 5.5v, i used 3.3v ).
In the next step to understand the sensor behavior , I have connected the output pin to my USB analyzer and measured the frequency. The frequency varies based on the vibration strength.
Later , I connected to my development board (CYW920721B2EVK-02) with the help of time and pin interrupt. I ' m able to count the incoming pulses.
Finally I took BAR LED's to showcase the frequency variation in the form of light effects. Bringing the BAR led here is unplanned so did not had proper resistor but managed to get work.
And the final outcome of this experiment is here
My final application is connected with this experiment. My next and final blog (blog2) will show the complete implementation my "Music Surface Kit"
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