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Unformatted text preview: measure
the RPM of the motor. Measuring the BEMF voltage
while reading the digital tachometer will give a correlation between motor speed and BEMF voltage.
Note: Microchip Application Note AN893
provides firmware and circuit examples for
reading the BEMF voltage using a
PIC16F684. DS00905B-page 6 2010 Microchip Technology Inc. AN905
Brushed DC motors are very simple to use and control,
which makes them a short design-in item. PIC
microcontrollers, especially those with CCP or ECCP
modules, are ideally suited for driving BDC motors. REFERENCES
AN893, “Low-Cost Bidirectional Brushed DC Motor
Control Using the PIC16F684“.
AN847, “RC Model Aircraft Motor Control”.
index.html 2010 Microchip Technology Inc. DS00905B-page 7 AN905
NOTES: DS00905B-page 8 2010 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sh...
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- Winter '10