self raising target
Description
You can shoot at the bottle with a rubber band. If you hit it, the bottle falls down and get raised up by a lever.
Instructions
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License
self raising target by erdinger is licensed under the Attribution - Share Alike - Creative Commons license.

not bad!
You can add a counter of hits.
This device is totally analog, two switches are moving the as a dc-motor hacked servo. If you like to, maybe you can add an arduino and control it digitally. Then it should be possible to count...