C Control PRO-BOT128 + C-Control PRO 128 Unit + Voltcraft® USB programming cable Kit 190406 Benutzerhandbuch

Prior to starting with the electronics, you have to perform a number of mechanical steps.

To enable the motors to transmit their force to the transmission, the motor pinions (the small gearwheels with the 1.9mm boring and the 10 teeth)
must be mounted on the motor axis. If these pinions are not installed on the supplied motors, you have to press them on. To do so, put on a pinion
on the axis of each motor (do not exert any force, just make sure that the pinion stays on the axis and does not fall off).

Place the motor on a semi-soft surface with the pinion pointing downwards (plastic, cardboard, etc.) and slightly tap with a hammer on the axis,
which protrudes slightly from the rear of the motor until the motor axis is completely pushed into the pinion. Alternatively, you can press the pinion
that was attached by hand with a vice onto the motor axis.

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However, you may only exert force on the continuous motor shaft, never on the housing or the bearing! Make sure that the pinion is
not damaged!

The PRO-BOT128 is supposed to slide on two halved ping-pong balls later on. Take a whole ping-pong ball and carefully cut it in half with a
Stanley knife.

You best first cut the ping-pong ball into two equal halves. After assembly, measure the distance between the floor (smooth surface) and the
bottom of the circuit board of the drive unit and cut/file/grind the halves of the ball to the exact specifications.

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Please keep in mind that you still need to put some glue between the circuit board and the halves of the ball (e.g. hot-melt); in
addition, there are cable clips as well as soldering pins on the bottom of the circuit board, which require some post-processing until
both halves match exactly.

Depending on the surface on which you operate the PRO-BOT 128 later on, cut
the ball halves a bit smaller to prevent toppling of the PRO-BOT 128.

This way, both wheels keep a good contact to the floor, even in case of slight
unevenness, e.g. in case the wheels have to cross tile joints etc. or if the PRO-
BOT 128 rolls on a smooth carpet (the wheels sink in slightly).