Project: Inexpensive Firearm Accelerometer

Post by burfog » Sun, Jan 13, 2019, 12:18 AM UTC

wizdumb wrote: post #10

burfog wrote: post #9

You need to rig this up to an actuator. There are lots of things you could do with that. You could detect when a machine pistol is getting uncontrollable muzzle rise, then stop it until the trigger is released and reapplied. You could hold off firing until the gun is stable. When the trigger is pulled, look for smooth movement. (no angular acceleration, and the regular acceleration has a stable magnitude equal to gra…

Hi! I see a lot of "you could" in your reply, but I'd like to point out that I released this as an open-source DIY project so that anyone could do whatever tests they wanted. I encourage you to build your own -- I'd love to see what you can make and learn with it!

Post by burfog » Sun, Jan 13, 2019, 12:55 AM UTC

wizdumb wrote: post #12

burfog wrote: post #11

Earlier quoted context omitted.

It's just a few free ideas. I'm thinking you or anybody else could have fun and/or create a profitable business.

Fair enough! I don't have the budget for a machine pistol, but maybe someone who does can try that idea out.

Post by joshvm » Sun, Jan 13, 2019, 10:28 AM UTC

wizdumb wrote: post #7

joshvm wrote: post #6

Earlier quoted context omitted.

You could try making it wireless rather than put the logging on the gun. Something like an Esp8266 might do it if you buffer the measurements. Also look at the Particle Photon which will do TCP out of the box. Squirt the data to a pi and do the logging on there. Your problem is that you need to find some asynchronous storage or transmission method. For example in barebones avr, writing to the spi data register initia…

Thanks for the feedback! The Feather board I'm using actually has Bluetooth, but I have not explored using it yet. If it's faster to send data over BLE to an app, then that would make this project even more affordable and smaller because the SD card and RTC are no longer required. I believe the Feather M0 board I'm using is also capable of running CircuitPython (fork of MicroPython). For this project, I wanted to kee…