PROTOTYPE #13

To make the launcher autonomous we went to buy a battery pack (12V 1,3Ah). The wheels are able to turn for about an hour. That is more than enough for this application. Jana will never go over the hour a day to throw tennis balls with her dog.
 

With this battery the wheels turns faster but the ball doesn't go much further.

CONCLUSION:
Expected positif feedback: It went a little bit further.

Unexpected positif feedback: /

Expected negatif feedback: The ball still doesn't go 15m.

Unexpected negatif feedback: One of the wheels came lose during one of the tests.

Makeability score: 2