130-28176 Parallax Inc, 130-28176 Datasheet - Page 227
130-28176
Manufacturer Part Number
130-28176
Description
KIT PARTS PROCESS CONTROL
Manufacturer
Parallax Inc
Specifications of 130-28176
Accessory Type
Education Kit
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Board of Education Full Kit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
- Current page: 227 of 330
- Download datasheet (11Mb)
change, an open-loop system cannot automatically compensate because there is no
feedback informing the system what the actual process variable is doing.
Challenge 6-4: Stand-Alone Control
The BASIC Stamp program and StampPlot interact to control the system. The controller
receives input from the computer interface for the settings of the ADC offset and span
based on temperature range and the amount of PWM for proper regulation of the
incubator.
If StampPlot is not running, the BASIC Stamp will cease to run as it awaits data that
never arrives. This leads to excessive expense and possible unreliability of the system.
The setting of PWM to control temperature was found by manual control. The setting
can also be hard-coded into the BS2 program to run stand-alone.
√
√
√
√
√
√
√
√
√
√
In the initialization section of the code, set the ADC voltage variables to
appropriate levels to control the ADC. This allows monitoring of the system by
StampPlot when desired.
In the initialization section of the code, set the PWM drive variable to the
appropriate setting, found through testing, to maintain temperature in the 'yellow'
under normal conditions.
Comment out (place an apostrophe in front of) any
program that read values from StampPlot.
Save your program as StandAloneIncubator.bs2.
Disconnect from StampPlot.
Run your code.
Connect briefly with StampPlot to ensure proper temperatures are read and that
the PWM control has no effect on the BASIC Stamp (as the slider is moved, the
% PWM will still be marked at the top of the plot but should be disregarded).
Disconnect on StampPlot.
After several minutes, connect on StampPlot again to check on the control of the
incubator.
Discuss your code changes and results.
GOSUB
commands in the
Related parts for 130-28176
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
KIT PROPELLER EDU PROJECT PARTS
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
KIT PARTS SMART SENSORS
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
Microcontroller Modules & Accessories DISCONTINUED BY PARALLAX
Manufacturer:
Parallax Inc
Part Number:
Description:
BOOK UNDERSTANDING SIGNALS
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
COMPETITION RING FOR SUMOBOT
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
TEXT INFRARED REMOTE FOR BOE-BOT
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
Microcontroller Modules & Accessories DISCONTINUED BY PARALLAX
Manufacturer:
Parallax Inc
Part Number:
Description:
BOOK UNDERSTANDING SIGNALS
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
BOARD EXPERIMENT+LCD NX-1000
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
IC MCU 2K FLASH 50MHZ SO-18
Manufacturer:
Parallax Inc
Datasheet: