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• System
Overview
• LCD
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Software
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Implementation
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Hand
that Feeds
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Where
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Sources
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How
many times have you tried to adjust something
to make it level with a spanner? You probably
experienced some difficulties. Pool tables and
pinball machines have four feet for such adjustment,
but fiddling around with the spanner while trying
to get a unit level is a huge pain.
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(Click
here to enlarge)
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Photo
1—I used a dual-axis level inclinometer
from AOSI coupled with a Philips LPC2138
microcontroller. The system features an
Epson mobile phone LCD combined with audio
feedback. You can use the unit without looking
at the display.
|
My
dual-axis level sensor is a solution to this problem
(see Photo 1). In this article, I’ll explain how
I built the system around a Philips LPC2138 microcontroller
and Advanced Orientation Systems (AOSI) DX-045D-90
electrolytic tilt sensors (see Figure 1).
|
(Click
here to enlarge)
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Figure
1—Simplicity at its best. The LPC2138 stimulates
the DX-045D-90 dual-axis sensor and displays
the results on the E2202CKR LCD from a mobile
phone. Although I used a Keil MCB2130 evaluation
board for my contest project, mounting the
LPC2138 on this board would make for a very
compact integrated unit. |
