122-28029 Parallax Inc, 122-28029 Datasheet - Page 243

• Manufacturer Part Number: 122-28029
• Description: GUIDE STUDENT SMART SENSORS
• Manufacturer: Parallax Inc

Specifications of 122-28029

• Accessory Type: Manual
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Smart Sensors
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

axis version of the acceleration measurements covered in this activity along with
gyroscopes that measure the vehicle's rotation.
Parts, Equipment and Circuit Diagrams
In addition to the parts for Activity #4, you will need an RC car and controller, which are
not included in the Smart Sensors and Applications Parts Kit. The circuit diagrams that
should be built on your board are at the beginning of Activity #4 in this chapter.
Hardware and Setup
Figure 6-4a shows an inexpensive RC car that can be obtained at many hobby shops and
retail electronics outlets. Figure 6-4b shows how the board was mounted. Rubber feet
were affixed to the underside of the board in a way that prevented any of its electrical
connections from coming in contact with any of the RC car's electrical metal parts.
Another option would be to use double-stick tape to affix the board to the roof of the
plastic shell. The board was oriented with the breadboard toward the front of the car.
Figure 6-4: RC Car with Acceleration Datalogger
a.
How it Works
Figure 6-5 shows a graph of the accelerometer's y-axis measurements as the car
accelerated forward, slowed to a stop, and then accelerated backwards.
Avoid accidental short-circuits. Make sure your board is mounted on the car so that
exposed metal underneath the board has no way of coming in contact with any of the RC
car's metal parts or electrical connections.
b.
Chapter 6: Accelerometer Projects · Page 231
The