TDGL020 Digilent

chipKIT Motor Shield Reference Manual Revision: April 16, 2013 1300 NE Henley Court, Suite 3 Note: This document applies to REV D of the board. Pullman, WA 99163 (509) 334 6306 Voice (509) 334 6300 Fax Overview The chipKIT Motor Shield is an expansion board for use with the chipKIT Uno32 and chipKIT uC32. It provides additional circuitry and connectors for the Uno32 and uC32 to drive various motors types. The chipKIT Motor Shield is designed to drive DC motors, servo motors, and stepper motors. 2 It also provides additional I/O via an I C I/O extender. Features include: 2 DC motor driver channels, accessible with either a JST 6-pin connector or a terminal block 2 DC motor encoder input signals for each DC motor channel 4 servo motor channels 2 I C General purpose I/O expander with 4 LEDs 2 push buttons and 2 user settable jumpers 1 4-wire unipolar stepper motor channel Standard chipKIT Shield connectors Functional Description The chipKIT Motor Shield is designed to be used with the chipKIT Uno32 or chipKIT uC32 board. When used with these boards, the microcontroller and shield provide the necessary supporting hardware and connectors to control most types of small motors. The rest of this document will only reference the Uno32 however, the shield can also be used with the chipKIT uC32. The chipKIT Motor Shield has the following connectors: J1: Power Supply for the DC motor driver This connector provides power to the DVR8833RTY motor driver for the DC motors. Motor supply voltage range is 2.7-10.8 V. Doc: 502-262 page 1 of 8 Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners. chipKIT Motor Shield Reference Manual J3 & J6: DC motor 6-pin JST connector These connections provide power and feedback signals for DC motors. The pin-outs are compatible with the Digilent DC gear-motors. J5 & J7: DC motor terminal block connector These connections provide the power supply pin-out for most two wire DC motors. J2: DC motor driver disable Shorting these two pins (or driving the NS signal pin low) will put the DC motor driver into sleep mode. This disables the motor driver and therefore reduces power consumption. This option is useful for low power applications. J4: DC motor driver fault indicator The NF signal will be driven low when there is a fault detected within the DC motor driver. Possible reasons for fault include overcurrent, overheat, and low voltage. J8 & J9: DC motor feedback signal headers Headers for connecting DC motor feedback signals. J10: Power Supply for Stepper motor This connector provides power for driving the stepper motor. J12 & J13: Stepper motor terminal block connectors These connections are used for driving a stepper motor. J14: Power Supply for servo motors This connector provides external power for driving the servo motors. If using this header remove JP6 to ensure that servo power supply is not shorted to the 5 Volt Uno32 power supply. J11 & J15: Digital Signal Pass-Through Connectors This connector passes the digital I/O pins on the Uno32 through to the chipKIT Motor Shield. 2 J21: I C 1 Daisy Chain Connector 2 This is a 2x4 pin header connector that provides access to the I C signals SDA and SCL as well as 2 power from the 3.3V power bus and ground. This can be used to extend the I C bus off of the board 2 2 and to power external I C devices. Digilent has cables and a selection of I C peripheral modules that can be accessed using this connector. www.digilentinc.com page 2 of 8 Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners.