|
|
 |
A Robot by Bill Clingan
- This robot features (3) Sonars with 1 uS resolution each using 16 bit up
counters to measure the echo time returned. Each counter can be read through a 16 bit
port. One 8 bit down counter that controls the sonar inhibit circuit for all three sonars
at a 1 uS resolution which allows the sonars to detect objects down to 4 inches away. This
also allows all three sonars to be activated at the same time without any processor
intervention.
- One degree resolution Vector 2X compass with
hardware circuit that will keep a port register
updated with the latest bearing. Again this
eliminates all processor involvement to obtain
the data from the compass.
- Used thirty magnets on each wheel with a
hal-effect transistor to keep track of wheel
movement. Each signal is feed into a 8 bit
down counter that controls each wheel. This
eliminates the slow rise time problems associated
with photo-transistors. The hall-effect transistor
is mounted on one of the nuts that mounts the
motor to the frame.
-
Has a NE555 timer circuit when
enabled that allows for a slower motor movement.
This allows me to have two motor speed (Fast
/ Slow).
-
Two infrared proximity detectors
in front of each wheel to detect objects
that are not detected by the sonars.
-
Two 6 volt batteries used in
kids cars they ride in, to form 12 volts
and allow ample run time.
-
386 processor running at 25
MHz with 16 MEG of non-volatile storage and
512 Kbytes of ram. Battery backup clock calendar
chip. 34 Parallel I/O lines, etc.......
|
|
|
|
