Thread: High speed encoders
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Unread 26-01-2012, 12:10
dyanoshak dyanoshak is offline
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Re: High speed encoders
Quote:
Originally Posted by slijin View Post
The QEI can handle a rate of up to 12.5 MHz (see 1.1 & 18 of this doc for more deetails).
Yes, the microcontroller in the Jaguar can handle 12.5 MHz, but that is when the MCU is running at 50 MHz. Jaguar firmware sets the MCU to run at 16MHz.

We specify the maximum transitions per second at 1 million. Yes, at 16MHz the MCU can read up to 4M transitions per second, but with 10K pull-up resistors and an unknown capacitance in the encoder lines, 1M is more realistic.

-David