Grove - I2C Motor Driver - information and source code

[Gunther]

I wrote this post when I got mine working. This shows exactly how to set it up.
http://salviusrobot.blogspot.com/2012/0 ... p-and.html

[solis568]

It worked fine at first, all connection are ok. I am using a shield with an arduino and the i2c Motor Driver. I tried the code of the link but it does not work, Motor Driver keep all the LEDs on.
I would like to send something to the Motor Driver and this reply through i2c but i am not sure if it is possible.

Thanks

[schmron]

It worked fine at first, all connection are ok. I am using a shield with an arduino and the i2c Motor Driver. I tried the code of the link but it does not work, Motor Driver keep all the LEDs on.
I would like to send something to the Motor Driver and this reply through i2c but i am not sure if it is possible.

Thanks

Did you use jumper wires for this connection? How long?
Breadboard?

[solis568]

I used grove universal 20cm cable with a shield connected to arduino

[cladstrife911]

Hello,

I'm trying to flash the frimware of my I2C motor driver but I'm struggling with the AVR programmer. I bought the AVRISP programmer from seeedstudio.
Please see enclosed a picture which shows how I connect to the board.

[vit346]

Hello,

I'm trying to flash the frimware of my I2C motor driver but I'm struggling with the AVR programmer. I bought the AVRISP programmer from seeedstudio.
Please see enclosed a picture which shows how I connect to the board.

A had the similar problem. It was wrong pinout written at the board. But my board looks quite different (may be I have an old version of it).
Try to look at atmega8 datasheet, and check wheather the MISO, MOSI and SCK pins of controller connected to the proper pins of the socket.

Which flashing-program do you use?

[rberger]

So is the actual SOURCE CODE of the firmware somewhere online? The wiki link File:Grove-I2C Motor Driver firmware.zip seems to only have a file with hex values in it, no source code.

I want to know if I can extend the firmware so it can work with dc motors with encoders.

[vit346]

So is the actual SOURCE CODE of the firmware somewhere online? The wiki link File:Grove-I2C Motor Driver firmware.zip seems to only have a file with hex values in it, no source code.

I want to know if I can extend the firmware so it can work with dc motors with encoders.

Do you want to connect encoders to this board? How?

I have written an alternative firmware for this board. I can share the source code if it really helps you.

[rberger]

So is the actual SOURCE CODE of the firmware somewhere online? The wiki link File:Grove-I2C Motor Driver firmware.zip seems to only have a file with hex values in it, no source code.

I want to know if I can extend the firmware so it can work with dc motors with encoders.

Do you want to connect encoders to this board? How?

I have written an alternative firmware for this board. I can share the source code if it really helps you.

Yes, that would be helpful. I'm interested in using this with the DFRobot Baron-4WD Mobile Platform which has optical encoders or possibly with the Trosson Budget Bot Chassis whose motors use Hall Effect Quadrature Encoders

[vit346]

Yes, that would be helpful. I'm interested in using this with the DFRobot Baron-4WD Mobile Platform which has optical encoders or possibly with the Trosson Budget Bot Chassis whose motors use Hall Effect Quadrature Encoders

Here is alternative firmware for the motor driver. I would be grateful to receive any report from you.

But how do you want to connect encoders? There are only 3 inputs available: MOSI, MISO, SCL. But 2 encoders require 4 inputs.