AmigoBot Mobile Robots
43
Appendix C
Specifications
Physical Characteristics
Length
33 cm
Width
28 cm
Height (body)
13 cm
Body clearance
3 cm
Weight
3.6 Kg
Payload
1 Kg
Construction
Body
Molded polycarbonate
Chassis
1.6mm CNC fabricated aluminum
Assembly
Allen hex screws (metric)
Power
Battery
12V lead-acid
Charge
24.2 watt-hr
Run time
3+ hours
Recharge time (trickle) 8 hrs
Recharge time (fast)
4 hrs
Mobility
Drive wheels
2 solid rubber, with caster balance
Wheel diameter
10 cm
Wheel width
3 cm
Steering
Differential
Gear ratio
19.5:1
Swing radius
33 cm
Turn radius
0 cm
Translate speed max
750 mm/sec
Rotational speed max
300 degrees/sec
Traversable step max
1.5 cm
Traversable terrain
All wheelchair accessible
Sensors
Sonars
8 total
1 each side
4 forward
2 rear
Position encoders
2 (one each motor)
9,550 ticks per wheel revolution
30 ticks per mm
Electronics
Processor
20 MHz Hitachi H8
Position inputs
4
Sonar inputs
1 x 8 (multiplexed)
Digital I/O
8-bit logic ports
A/D
4 @ 0-5 VDC