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The Motor Shield is a perfect platform for robotics and mechanical applications. It enables the Arduino to drive two brushed DC motors or one 4-wire two-phase stepper motor. Based on the H-bridge driver Chip L298N motor driver integrated circuit, it requires a 6V to 15V power supply to power the motor and also includes an on-board 5V voltage regulator for powering the main Arduino board. Additional plug and play Grove sensors can be connected to the 13 on-board Grove connectors.
Features
Standard Arduino compatible
Pulse-width modulated speed control mode
4 direction indicator lights
Compatible with Grove plug and play sensors
Extra large heat sink helps handle big loads
CAUTION:
The Driver IC and Heat sink may become very hot when working with current more than 1000mA.
Specifications
Item
Min
Typical
Max
Unit
Logic Control Voltage
4.5
5
5.5
V
Motor Supply Voltage
6
/
15
V
Output Voltage
0
/
Vinput -1
V
Output Current( For Each Channel)
/
/
2000 *
mA
Output Duty range
0%~100%
/
Dimension
68.5x54.5x29.5
mm
Net Weight
37
g
For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product.
Documents
Please visit our wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum.
Can you control two 4 wire (actually six wire, but of course center taps not used) stepper motors with 2 motor shields. Possibly using grove connections for comunication. Would also provide ext. power source to both motor boards.
Hi.It is feasible,but i don't know any specs of your stepper,so i can't make a judge.
Back feeding motors with jumper connected - don't do this!
I am wondering why the motors try to move when I have the 5V-Vcc jumper installed, battery disconnected, and Ardunio powered via USB. I don't see a diode in the schematic that would allow current to flow around the regulator, so I can only conclude it's back feeding through either the regulator or controller chip. My conclusion - Don't Do This! I don't know about the 1117 but back feeding a 7805 (output higher than input) is a recipe for frying the chip eventually.
There are also some problems reported with users frying the USB processor chip on the Arduino Mega while powering the computer from regulated 5V applied to Vcc and from USB at the same time. So, be sure to remove the 5V-Vcc jumper from this shield when powering the computer from USB. That way you don't back feed either the regulator on the shield or the Arduino.
Hi.You can see a power jumper(J4) on the motor shield.If you move it,the Arduino can provide power to Shield,but the shield also can't provide power to Arduino.If J4 exists,they can provide power to each other under two situation:1)USB to Arduino:if no power connected to Shield separately,the Arduino will provide power to Shield via a diode of 7805.2)Power connected to Shield：If shield has a separate power,the voltage would through a rectifier first,and then provide power to Arduino.At this situation,no current of Arduino could through Arduino to Shield via 7805,because the voltage of diode' cathode is 5v,so the current can't through diode.
I was wondering how you connect the motor shield without mounting it, which pins are needed, I've tried the 8-13 pins using header pin wires but the LEDs on the shield are very low and the motors aren't being controlled, im powering each individually. Im trying to control 2 dc brush motors using 12V and this set up works when i mount the shield.
Sounds like your wire guage is either too small or leads are too long.
Also if the wire quality is junk, oxidized, old scrap, there can be a lot of internal resistance, and leads longer than 6 inches can soak up a lot of power. Check this and experiment with thicker wire, shorter leads, anything that can present less resistance.
Compare indications to see if theres any improvement. If not, then check components for shorts, bad motors creating undue loads, etc.
LEDS acting dim, with correct power inputs, lead me to wire quality, 1st...then component faults 2nd
greetings, I'm trying to control a 12v stepper motor with this motor controller but it seems like the on board voltage controller restricts power to only 5v which means that the stepper motor is working way below capacity. is there a way to disable this function to allow the right amount of voltage to reach the stepper motor?
Hi,you can only get 5v from 13 on-board Grove connectors,but you can drive a 12v stepper by the output pins.Of course,the 15v external power is necessary.
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Jacket Chueng
