122-28176 Parallax Inc, 122-28176 Datasheet - Page 127

• Manufacturer Part Number: 122-28176
• Description: GUIDE STUDENT PROCESS CONTROL
• Manufacturer: Parallax Inc

Specifications of 122-28176

• Accessory Type: Manual
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Propeller Education (PE) Kit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Chapter 4: Sequential Processes and Optical Switches · Page 117
Parts Required
(1) ADC0831
(1) Resistor – 100 Ω
(2) Resistors – 220 Ω
(1) Resistor – 10 kΩ
(1) LED – Green
(1) Opto-Reflective Switch – QRB1114
(1) Brushless DC Fan
Build (or modify) your circuit as shown in and Figure 4-18 and Figure 4-19.
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Figure 4-18: Tachometer Schematic (top) and Wiring Diagram (bottom)