User Manual

General-purpose Wixel or XBee pins can be
accessed at multiple points on the m3pi
expansion PCB.
Warning: The mbed, Wixel, and Xbee use 3.3 V logic and the 3pi uses 5 V logic. While the
mbed pins are 5V-tolerant, the Wixel and XBee pins are not. All of the dedicated connections
between components on the m3pi expansion board perform the required level shifting, but
you must be careful if you make your own connections to free Wixel or XBee pins. The m3pi
expansion board has several general-purpose level shifters that you can use to safely make
your own connections between components (see Section 4.d for more information).
4.b. Power
Pololu m3pi User’s Guide © 2001–2017 Pololu Corporation
4. The Expansion Board in Detail Page 29 of 39