28029 Parallax Inc, 28029 Datasheet - Page 246

• Manufacturer Part Number: 28029
• Description: KIT PARTS SMART SENSORS W/TEXT
• Manufacturer: Parallax Inc

Specifications of 28029

• Accessory Type: Parts Kit
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: BASIC Stamp® or Javelin Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 28029PAR

Page 234 · Smart Sensors and Applications
Figure 6-9 shows how the accelerometer's x-axis is oriented, and the acceleration it
measures. For a left turn, the car is accelerating to the left, which for the accelerometer is
a positive x-axis acceleration measurement. When it turns right, acceleration is in the
opposite direction of the positive x-axis, so the x-axis measurement it negative.
Figure 6-9: Sensing Acceleration during Turns
-100
-20
-40
-60
-80
60
40
20
a.
0
0
Left Turn
Circles
100
RC Car Left then Right
200
seconds/30
Right Turn
300
Circles
Straighten
400
Out
500
600
b.
Figure 6-8
RC Car Accelerometer
Measurements while
Driving in Circles