28029 Parallax Inc, 28029 Datasheet - Page 263

• 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

Figure 6-19: Bicycle Wheel Acceleration Study
With this in mind, we are back to performing acceleration studies, under as many
different situations as possible. Here is the program that was used to log the data for the
graph in Figure 6-19. Notice that it is logging word-sized values for both the x and y-axis
measurements. The spreadsheet is given the job of changing the raw accelerometer
PULSIN
Example Program: BikeWheelAcceleration.bs2
As a project, test the bicycle meter in different temperatures and riding conditions, turns,
up hill, down hill, slow, fast, etc. Look for a sequence of changes in measurements that
can be tracked regardless of the conditions. If there is not a hysteresis range for all
conditions, your code may need to periodically update the most recent high and low
values, and then look for hysteresis within that range.
' -----[ Title ]--------------------------------------------------------------
' Smart Sensors and Applications - BikeWheelAcceleration.bs2
' Datalogs 500 x and y-axis acceleration measurements.
'{$STAMP BS2}
'{$PBASIC 2.5}
Accelerometer
measurements into gravity measurements.
Accelerometer
y-axis
-0.5
-1.5
1.5
0.5
-1
-2
x-axis
2
1
0
0
100
200
Bike Wheel at Tw o Different Speeds
300
400
tim e, m s
500
600
Chapter 6: Accelerometer Projects · Page 251
700
800
900
1000