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The motorboard has an automatic low power shut off.
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. When the battery gets critically low, the RED mmicrochip will illuminate.
PIC18F – Microcontrollers and Processors – Microcontrollers and Processors
This page was last modified on 23 Marchat Views Read View source View history. Actually it operates at Hz measured.
This saves significant amounts of battery power and prevents the motorboard from starting accidentally. Since there are eight optical slots on the chopper per turn, this means optical pulses per turn of the wheel.
Motorboard Controller Source Code (Open Source)
The controller monitors the speed of one of the motors the one with a microcbip wheel “chopper” attached to an elongated motor shaft. 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. The motorboard will not function and there will be no indication as to the cause of failure.
Then the operator pushes to go. This prevents power from being applied to the motors until they are at least rotating at 3mph.
Navigation menu Personal tools Create account Log in. If low power is detected the red LED will blink, and power will be shut off completely.
The speed is controlled linearly, and no attempt is made to maintain a given speed for a given throttle position. The Roth motorboards “maximum” speed of 18mph translates to optical pulses per second.
One turn of the wheel is at best inches 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.
When you turn the motorboard ON, the green light goes on then off, then the yellow light goes on then off then the red light goes on then off and then the green light goes on solid.