WheelWatcher kits are really well thought out rotation counters. There's many applications for such a critter that doesn't involve wheels or robotics, so here is an attachment to make it easier for you to use a WW-01/WW-02 for your application.

This spacer allows you to use the codewheel sticker on a variety of wheels (from Budget Robotics or other vendors) or any mechanism that attaches to a servo with a servo control horn. Some drilling on your part is required, but the pre-drilled guide holes make it simple.

The spacer is made of laser cut styrene with a self-adhesive backing. It fits perfectly over all common servo control horns on the servo side of the horn. Thirty two guide holes are provided which line up with all of the most usefully located holes on all common servo horns from GWS, Futaba, and Hitec.

Features:

• Self-adhesive backing for easy mounting
• Pre-drilled guide holes provided for you to drill out to provide space for wheel mounting screw heads
• Same size as the CW-32 Codewheel Sticker incremental code wheels used with all WheelWatcher products

Use WheelWatcher encoders with:

• Budget Robotics Wheels including the O-Wheel, Reversible Foam Wheel, and Ribbed Rubber Wheel.
• Nonstandard wheels
• Articulated mechanisms
• All common servo horns from GWS, Futaba, and Hitec