Revision history and errata – Pololu 3pi Robot User Manual

Page 63

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12. Revision History and Errata

• 3pi robots with serial numbers less than 0J7259 have AREF connected to AVCC. This makes it unsafe to
configure the AVR’s ADC to use the internal voltage reference. Newer 3pi robots disconnect AREF from AVCC
and add capacitor C32 between AREF and GND, making it safe to use the internal voltage reference.

Pololu 3pi Robot User's Guide

12. Revision History and Errata

Page 63 of 63