User manual

Motors are not turning or turning in the wrong direction:

• IC L293 and IC CD4093 plugged in properly?

• Motors with right polarity (red and black cable)?

• Transmission or motors are running too tight

• Connection cable installed correctly, plugs in the right orientation?

• Right program in C-Control PRO?

• Insufficient PWM set in the program code?

• Batteries/rechargeable batteries too weak?

• Soldering error?

Odometer does not work.

• Photo transistors and IR diodes mixed up?

• Adjust IR diodes and photo transistors if necessary (press or remove with a small screwdriver towards the encoder disk)

• Solar radiation too strong. Test again in a darkened room

• Wrong program in C-Control PRO?

• Production tolerance with the drive, poss. insert small shim on the short shaft between the circuit board and the gearwheel. This prevents

possible clearance.

• Connection cable installed correctly, plugs in the right orientation?

• Properly equipped?

• Batteries/rechargeable batteries too weak?

EEPROM cannot be written or read:

• Properly plugged in?

• Pin assignment?

• Right program in C-Control PRO?

• Does the C-Control PRO work?

Battery voltage display returns false values:

• Properly equipped?

• Correction factor checked? (See program code)

• Batteries/rechargeable batteries too weak?

• JP1 plugged properly?

• C11 assigned properly?

• R10 and R9 correctly soldered in?

• Cold soldering spot?

Line sensor does not work.

• LED and photo transistor correctly soldered in?

• Properly shrunk with shrinkdown plastic tubing?

• Base too dark?

• Distance to the floor too large? (Max. 5 mm from the floor to the photo transistor)

• Connection cable installed correctly, plugs in the right orientation?

• Equipment error?

• Right program in C-Control PRO?

• Batteries/rechargeable batteries too weak?