General description:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hardware:

• DC motor NPC Robotics B81 FREE SPEED: 170-190 RPM, FREE SPEED CURRENT: 6.5 AMPS MAX.GEAR RATIO: 18:1 (WORM/SPUR)
• TORQUE @ 66 AMPS: 485 LB.IN. MIN.
• SPEED @ 40 LB.IN.: 170 RPM
• BRAKE TORQUE: 680 LB.IN. MIN. AT OUTPUT SHAFT IN BOTH DIRECTIONS.
• DC Drives: Home-brew (see schematics)
• Controller PIC16F877A, 20 MHz
• Saw Blade 1440 x 13x 0,65 Z8/12 , 1440 x 13 x 0,65 Z 10/14
• Supply transformer: Arc welding transformer ESAB Bantam TBH140 secondary rewound and additional auxiliary voltage winding addded
• Wheels: Cast aluminum, patterns 12mm baltic birch plywood, casting sand OBB oil sand

Software: Compiled with XC8

main.c

lcd.c

lcd.h

delay.h

Documents:

Assembly front, side, top

General Wiring Diagram

Connection diagram

Schematics

DC drive

Controller

PCB's

DC Drive PCB

Controller

Photos

Controller & DC Drive

 

 

Parts list