Its heart is a dual channel H-bridge driver chip that can handle current up to 2A per channel, controlled by an Atmel ATmega8L which handles the I2C communication with for example an Arduino. Both motors can be driven simultaneously while set to a different speed and direction. It can power two brushed DC motors or one 4-wire two-phase stepper motor. It requires a 6V to 15V power supply to power the motor and has an onboard 5V voltage regulator which can power the I2C bus (selectable by jumper). All driver lines are diode protected from back EMF.
The easy software interface is not the only easy-to-use feature because the I2C motor driver is designed to get you up and running in notime. It features a LED for power and four LED's to indicate if and to which direction each motor is running. Screw terminals facilitate motor and power connections, and the GROVE system plug and I2C interface enables you to daisy-chain the driver with many other devices.
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Hello, you can get those info from Eagle file.
One Grove base shield has 4 I2C slots. Each slot can also be extended with Grove I2C Hub.
Can anyone tell me any limitations to extend I2C slot on one base shield?
How many I2C Motor Driver can be connected on one base shield?
Yes! worked fine. Pay attention to the uart interface extended in the board, notice the distance between GPRS Shield and UNO, do not short to ground.
Hi, I want to connect a stepper with 1.4A/phase and 3.08VDC to V1.3b of the board. The GPRS Shield can be supply by extra power, due to the voltage tolerance ability of 470uF capacitor, the maximum supply voltage is limited at DC5V. We will expand the voltage range in future.
The table in your documentation tells me the supply voltage is 6-15V with max. 0.5A per channel. But the description says"can handle current up to 2A per channel".
----Seeed R&D Bruce
The GPRS Shield can be supply by extra power, due to the voltage tolerance ability of 470uF capacitor, the maximum supply voltage is limited at DC5V. We will expand the voltage range in future.
Hi, can anybody suggest how I might be able to add limit switch(es) or encoder signal inputs to this board to indicate to the Atmega that the motor has reached a desired position? Thanks, Dion.
Hi use"Notify Me"will remind you when it available.
Dear.If you want to control motor output,encoder can't do that.You need Radio Port Control Unit(like bluetooth or RF) ,which are connected to your arduino.If you have interesting,please sent e-mail to us.
I bought an AVRISP USB ISP programmer to update the firmware of the ???Grove ??“ I2C Motor driver??? using the .HEX file in the WikI website (mega8motorDriver092.hex). It does not seem to have made any difference, I am not convinced that this
The external power supply is ranging from 7V to 15V.
Hi Ernie, because the firmware is writed 2 years ago that I can not find the source code .I can make sure that the v0.9b and v1.1 has the same firmware .If it confilct with other device , you can try to change the I2C address of Motor driver.
Can some provide schematics for i2c motor driver v1.3
It is sold as a shield , sure that it work it is .
Hello - I am using a DC motor and writing speed (0xFF) and direction (0b0010) to turn full power to MotorA (M1). When I monitor the negative side of the output I still see ~0.7V instead of 0V. The M+ side shows 5.5V. I am supplying 6.8V to the board
It can't be power by 12V adapter,it will damage the Shield .
Is this driver (v1.2) work with Arduino Yun??
I am using the XU3 and programming in C++ with Geany , are there any libraries I can use to easily control the motors?
Thanks for your advice,it is really a good opinion.I will feedback to our designer,and consider it.
I am using the RaspberryPI and programming in C++ with Geany , are there any libraries I can use to easily control the motors?
Hi there , the GPRS shield only used D7/D8(software serial) or D1/D0(hardware serial) , depend on which serial you used. And the other pins is unused ,we don't do the more explore for RTC , you can read the SIM900 datasheet about it.
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