Fullauto Bowling Pinsetter Alley, high reliability, full-auto, 10 pins, with ultrasonic strike detector.
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Update: V4 Lego Bowling Pinsetter NXT, high reliability, full-auto, 10 pins, with ultrasonic strike detector.
If ultrasonic detect a strike throw. the pinsetter will skip spare set up procedure.
The NXT 1.0 light sensor use as both ball detector and warning LED light.
With NXT 2.0 color sensor, maybe can use both red and green LED light colors.
Beta version. Auto setup spare. Full automatic. String rope type. Fast operation.
Will build V1 type bowling alley / lane and ball return later.
Ball detector can be same as V1 (light sensor).
Strike detector use ultrasonic sensor maybe.
Use one Lego NXT 1.0 set.
For previous string-less version V1 please see my YouTube channel.