How to make a sensor that detects a punch

Other Hardware Sensors
1

So i have a project thats called a device for martial art sensing training. What i need is a sensor that can detect a punch (i can use a button but when i punch it, it wont survive for a long time) so i went to youtube and found this:

As you can see, when he punched to a led, it changed to another. Theres a link in that video but theres a twist, the images for instructions crashed for some reason, so can you guys help me how to make this sensor?
Cheers!

2

A simple vibration sensor like this:

1 Like
5

may be look at force-sensitive resistors (FSR)

1 Like
6

I use piezoelectric sensor. But be careful, it generates high voltages, so protect the input pins on your board with a resistor or a zener from the pin's maximum voltage.

Uses exemples:

  • Motion detection
  • Door knock sensor
  • Acceleration measurement system
  • force measurement system
  • pressure measurement system
  • Microphone used sound pressure to convert it into electrical form.
    lighters for cigarette
  • testing of high voltage equipment’s And there are thousands of applications of piezo electric sensor
3 Likes
8

Well theres an issue, it will break when we punch too hard

1 Like
9

I am a large Army veteran. When I smacked a piezo so hard with a screwdriver handle that the table jumped, it didn't break.

I was testing piezos as both buttons and force sensors.

You can pad a piezo. With amplification you can sense ants stepping on a piezo. Ants, amplified. Piezos are High fidelity sensors!

2 Likes
10

You gave up on the accelerometer?

13

Nope, the accelerometer works really great, i just need to smooth the values a little bit and its done. I suggest you to take a look at the youtube video of the topic!

14

Doesn't appear to be a Youtube link by you in your "Too big g..." post I mentioned. Is there another post/topic on the same project?

16

Here

17

Yup, my project has about 3 modes(there will be more in the future), including measure force of a punch

18

Oh. I thought you had a video of your project showing that you got your accelerometer working. Guess not. Anyway, the calibration results I requested in your other topic would have been more interesting.

1 Like
20

If you want then ill send it in the future!

21

Sure. I'd be interested in seeing the 18 calibration results requested here. To keep everything in the right place, they should be posted to that topic, not this one.

1 Like
24

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.