AN899 MICROCHIP PDF

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Motorboard Controller Source Code (Open Source) – Motorboards

Privacy policy About Motorboards Disclaimers Mobile view. One turn of the wheel is at best inches If low power is detected the red LED will blink, and power will be shut off completely. The controller monitors the speed of one of the motors the one with a optical wheel “chopper” attached to an elongated motor shaft.

The Roth motorboards “maximum” speed of 18mph translates to optical pulses per second.

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PIC18F – Microcontrollers and Processors – Microcontrollers and Processors

When the battery is almost dead, the red light will blink and the buzzer on the motor contoller PCB will beep on and off 1 second on, 4 seconds off until the battery reaches the low power shut off. When you turn the motorboard ON, the microchiip light goes on then off, then the yellow light goes on then off then the red microchlp goes on then off and then the green light goes on solid. Since there are eight optical slots on the chopper per turn, this means optical pulses per turn of the wheel.

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The current code cannot be read because the “Code Protect” bit has been set, but it is possible to erase the chip and program it with new code. Because there is no indication that the motor is moving less than 3mph, if the optical wheel fails for any reason the motorboard will assume that 3mph has not yet been reached.

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Retrieved from ” http: This saves significant amounts of an8999 power and prevents the motorboard from starting accidentally. Actually it operates at Hz measured.

When the battery gets critically low, the Microxhip light will illuminate. If the speed of this motor is less than 3mph, no power will be provided to the motors. Then the operator pushes to go.

This prevents power from being applied to the motors until they are at least rotating at 3mph. This page was last modified on 23 Marchat The speed is controlled linearly, and no attempt is microcgip to maintain a given speed for a given throttle position. The motor makes approximately The motorboard has an automatic low power shut off. The motorboard will not function and there will be no indication as to the cause of failure.

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