28119 Parallax Inc, 28119 Datasheet - Page 62

• Manufacturer Part Number: 28119
• Description: KIT UNDERSTANDING SIGNALS
• Manufacturer: Parallax Inc

Specifications of 28119

• Lead Free Status: Contains lead
• Accessory Type: Oscilloscope
• Interface Type: USB
• For Use With/related Products: BASIC Stamp® 2 and Board of Education
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

RCTimeConstant.bs2 to Demonstrate Charge/Discharge Curves
' Understanding Signals - RCTimeConstant.bs2
' Read photoresistor in RC-time circuit using RCTIME command.
' {$STAMP BS2}
' {$PBASIC 2.5}
DO
LOOP
HIGH 0
HIGH 15
PAUSE 10
LOW 0
LOW 15
PAUSE 10
√
√
Run the program RCTimeConstant.bs2.
Arrange your display using the red/blue arrows on the left to separate the two
signals as shown in Figure 4-7.
' 5 V on P0
' 5 V to capacitor for charge curve
' time for capacitor to fully charge
' ground capacitor for discharge curve
' same to P0 for comparison
Figure 4-7:
OPTAscope
display of RC
circuit with a
220 Ω resistor
and a 10 µF
capacitor