The Original CZ Forum

GENERAL => General Discussion => Topic started by: sirgilligan on October 18, 2018, 03:25:28 PM

Title: Recording Data during Firearm Operation
Post by: sirgilligan on October 18, 2018, 03:25:28 PM

I have developed an Apple Watch app called WatchForce. I wanted to record the motion and forces an Apple Watch can detect via the accelerometer and gyroscopes.

I have used this app on thrill rides and roller coasters, AND I have used it while shooting pistols.

Here is the G-Forces recorded while shooting my CZ 85B.

(https://4.bp.blogspot.com/-ZA9LQQpDF0c/W71K2IbBA_I/AAAAAAAAF3I/Cal1zTCsoXklAzznOmT0Qx0QXwyvo_HwwCLcBGAs/s640/IMG_2748.PNG)

Now I know that an Apple Watch and iPhone are not inexpensive, but hey, if you have them already you can use the app to discover some interesting information.

Here I select the data and I can see very precise values including their times.

(https://2.bp.blogspot.com/-rQOVwvfsMtc/W71MB658KYI/AAAAAAAAF3s/dcsVWm8wagIyj0ODZCt_q4tgJ69HZINCACLcBGAs/s640/IMG_2752.PNG)

Since this is done via the watch and not using sound, there is no interference from others at the range.

What other things might you want to measure?

Here I measure the recoil recovery time by selecting the point where the shot is clearly underway, the highest point, and the first point where the motion has settled down.

(https://3.bp.blogspot.com/-CSpRCfBNALA/W8UyP3LDAkI/AAAAAAAAF4g/wytg5lhURbYGpXO1IrwA_iOwiJZc5MdsgCLcBGAs/s640/Simulator%2BScreen%2BShot%2B-%2BiPhone%2B8%2B-%2B2018-10-15%2Bat%2B18.34.05.png)

I find it interesting. Maybe if I could get a few hundred or even thousand data sets from users I could Machine Learn a very sophisticated shot analyzer. This is a starting place at least!

Title: Re: Recording Data during Firearm Operation
Post by: sirgilligan on October 18, 2018, 03:25:46 PM

It was asked of me if the WatchForce can detect / record dry firing or drawing your handgun.


Let's start with dry firing.

I used my S&W 659, double action mode. All of my pistols are metal, hammer fired types.

Five dry fires

(https://3.bp.blogspot.com/-xmbN2NtUsfw/W8fx8WoimMI/AAAAAAAAF5A/g84RmNJNwbophWGBN9sHl7DdlB20jSYHgCLcBGAs/s640/dryfire1.png)

Using the filter slider I remove noise until it seems reasonable and then I tap to get some data.

(https://2.bp.blogspot.com/-ik0rgq8jBfY/W8fx9ThSenI/AAAAAAAAF5E/PAxk7Emw-Ngv5LXFBDYBUllKyKwbmUDFwCLcBGAs/s640/dryfiretime.png)

I have no idea what might be recorded with a really smooth and soft trigger.

Now to the drawing of my handgun.

I was pleased to see the motion is easily recognized.

(https://2.bp.blogspot.com/-HzTEtkWudKE/W8fx7gUBgZI/AAAAAAAAF44/wtGrPN-zhukAHISYzrkcSHEa9jaW1qmtgCLcBGAs/s640/draw3.png)

So, I select where I think the motion started and stopped and I get a time for the draw.

(https://4.bp.blogspot.com/-AUzn3HXzYRY/W8fx71DYZ_I/AAAAAAAAF48/_YIyxm05LoA1m94RuktLvor44TCaqoypwCLcBGAs/s640/drawtime.png)

I did this several times and the motion pattern was very similar each time.

If you have an Apple Watch try it out. It is free for now.

Title: Re: Recording Data during Firearm Operation
Post by: Scarlett Pistol on October 18, 2018, 04:22:07 PM

I don?t have an Apple Watch but if I did then I would use this app for sure! Thanks for making it and sharing it!