308 & 338 at 1km (1100 yards) with DIY vibration sensor device

Second thread in here !

This time, it's to show you the simple device that I built and used this summer to shoot at 1km... and some nice lookign Savages of course lol.

Here are some videos of the shots and location.
I've also included a small video of the device when I finished building it.

Hope you enjoy.
If you have question on the device I will be glad to respond !
Everything holds in the blue box. You tape it in the back of the steel plate and expose only the light on a stick at the end of a usb extension cord.

https://lh6.googleusercontent.com/nh...=w1920-h901-rw

Savage 10 FCP McMillan .308 (mine)
https://youtu.be/Aw37U8CM1lI

Savage 110 BA .338 (not mine)
https://youtu.be/Pxgl5gkohu4

View through scope
https://youtu.be/CfQwlWEXg_w

Video of the device up close
https://youtu.be/o6PKDLqx5zw

Material :
- Pool test kit empty box
- USB LED light
- USB extension cord (not pictured in video) to fix light on a post
- Relay with delay (Precise 5V -30V Micro USB Power Relay Timer Control Trigger Delay Switch Module) link : http://www.ebay.com/itm/Precise-5V-3...item4199587095
- Vibration sensor (5v vibration switch) link : http://www.ebay.com/itm/Vibration-sw...item564d8fd8bf
- USB backup battery pack (not one pictured in video) link : http://www.ebay.com/itm/2600mAh-USB-...9m0HSuPaykUQrA
- Wiring

http://www.savageshooters.com/showth...h-alarm-system
Yours looks great! I've been building alarms for a few years now have been able to work out any kinks. I have a total of 5 I've built and use. Usually only use them any thing past 1k.
Yours looks like it functions perfectly.

Interesting. Accelerometer or Velocometer? Parts list?

It's in the description of the last video but I will edit the OP.

Superb !

Thank you mate.

That would be a good location for some permanent targets placed at various distances.
There dosen't appear to be any shortage of natural material known as rocks.
They can even be painted in some neutral color that makes finding them easier without being obvious to others.
Nothing to set up, and when it's time to leave, just leave.