I2C Hub for connecting multiple I2C devices?

[corb]

It's great that I2C allows you to connect multiple devices to your Arduino but I haven't found any good way to handle the connections. I'm looking for a really simple board that has five or six I2C connections on it (ideally just 4 pin JST RE but could be any standard connector). I think the pins can just be passively connected. I could try to make one, but the odds of me correctly soldering 24 pins that are that close together are about 1 in never. I've seen one I2C hub on the market but it only has 4 connectors which means if you daisy chain two of them you only end up with 5 usable connections.

Also, THANKS for producing the 3v/5v I2C level convertor - just got one of those which will solve my problem of mixing 3v and 5v i2c devices.

[franklin97355]

As long as the devices have unique addresses you just connect them to the same two pins. The connections will depend on the device layout you have. What devices are you trying to use?

[corb]

I can get them all working together but it's a wiring mess. I'd like a simple I2C hub (like an Arduino Sensor shield) that I can plug them all into. I reconfigure things a lot and plugging in five connectors is a lot easier (and less prone to error) than trying to connect up 20 individual wires. The I2C items are:

LCD shield, Compass , color sensor, MP3 board. I can put JST RE connectors on all of them, which is my favorite connector because it's compact and easy to make your own custom cables but I need a simple board to plug them into. I have a bunch of analog and digital sensors and I just plug them into a Mega I/O sensor shield.

I'm playing around with a robot that has 1 distance sensor, 5 proximity sensors (left, right, rear, front down, rear down), 3 servos, 2 drive motors, a sound sensor, a motion detector, a temperature sensor, a gps, an SD card, 2 motor encoders plus the I2C: LCD shield, Compass , color sensor, MP3 board. I'm also potentially adding XBEE, an RFID reader and an arm. It's already a mess of cables and without IO shields and 3 or 4 pin connectors it gets really ugly. It's enough just getting all the separate libraries for that stuff to behave with each other.

[railman]

I think this is what your looking for. It has three I2C connections on board.



http://www.seeedstudio.com/wiki/index.p ... ase_Shield

http://www.seeedstudio.com/depot/grove- ... th=132_134