28176 Parallax Inc, 28176 Datasheet - Page 268

• Manufacturer Part Number: 28176
• Description: KIT PARTS PROCESS CONTROL W/TEXT
• Manufacturer: Parallax Inc

Specifications of 28176

• Accessory Type: Process Control
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: BASIC Stamp® 2 and Board of Education
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Photo PIN 8
' -----[ Initialization ]--------------------------------------------------
' ***** Reads values from StampPlot on reset
PAUSE 1000
' Read time between evaluations (seconds * 4)
DEBUG CR,"!READ [(drpTime),*,4]",CR
DEBUGIN DEC Samples
PAUSE 50
' Read setpoint
DEBUG CR,"!READ (txtSetP)",CR
DEBUGIN DEC SetPoint
PAUSE 50
' -----[ Main Routine ]----------------------------------------------------
DO
LOOP
' -----[ Subroutines ]-----------------------------------------------------
ReadPhoto:
RETURN
' Adjust delay to approximate real time between evaluations
' Take samples and plot
IF Samples > 2 THEN
ELSE
ENDIF
' Evaluate and plot
GOSUB CalcError
GOSUB CalcProp
GOSUB MarkProp
' GOSUB CalcInteg
' GOSUB MarkInteg
' GOSUB CalcDeriv
' GOSUB MarkDeriv
GOSUB CalcTotal
GOSUB MarkTotal
HIGH Photo
PAUSE 10
RCTIME Photo, 1, PhotoVal
FOR Counter = 1 TO Samples
NEXT
GOSUB ReadPhoto
GOSUB PlotData
IF Samples > 4 THEN PAUSE Delay
GOSUB ReadPhoto
GOSUB PlotData
' Photo RC Network
' Allow connection to stabilize
' Charge photoresistor's RC network Cap
' Allow 10 milliseconds to charge fully
' Measure discharge time thru photoresistor