27220 Parallax Inc, 27220 Datasheet - Page 139

• Manufacturer Part Number: 27220
• Description: BOOK STAMPWORKS
• Manufacturer: Parallax Inc

Specifications of 27220

• Accessory Type: Booklet
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: StampWorks
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

Moving Forward · Page 129
The two-channel oscilloscope screen capture below shows the unfiltered (directly
from BASIC Stamp) and filtered output (pin 1 of LM358) from PWM.
Note that the output from PWM lasts only while the instruction is active (set by
Duration
), and even in a loop there will be breaks (will fall to 0 volts) on the output
pin. For this reason, the PWM instruction is not particularly suitable for motor speed
control applications.