Kurt Larson
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Kurt Larson - Avon, MN
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- Type: Remote Controlled
- Purpose: To create something interesting yet difficult
I could carry in my pocket that demonstrates some of
my design abilities.
- Controller: Linx tx/rx units.
- Software Development Environment:None
- Sensors: None
- Actuators: Blue LED, two motors for fwd,rev,left,right
- Height, width, length: 1.5",1",1"
- Speed: Pretty quick--its driven by 2 pager motors, so
once it gets rolling it moves at a fast run despite
its size.
- Power source: NICAD
- Construction history: Building began in October of 2001
and finished in mid November 2001. I designed it to
use as a tool to demonstrate my abilities to possible
employers at future job interviews. The hardest part
was constructing the dual full H bridges out of
discrete SMT mosfets. Another design issue was
finding a chip to convert 1.2V DC to the minimum 3V DC
for the Linx RX chip on the car itself. This was
solved with a Maxim Max856 chip. It takes the single
nicad cell voltage and amplifies it to 3.3V output
with a max of 150ma output current. The range of the
Linx chips is supposedly up to 300 feet, however, I'm
not following the design guides regarding intended
grounding and T-lines so its range is limited to under
15ft.
- Future Enhancements/Plans: None--Maybe move the motors
closer together to get a better mechanical advantage
in steering manuevers.
- Status: Complete
- More Info: None
