Chaining I2C devices
Chaining I2C devices
by alonsoBrain
Fri Oct 05, 2007 3:03 pm
Hi!
Is it posible to build a bus of I2C devices with the same ID?
How can I read 2 devices of the same type????
Is it posible to build a bus of I2C devices with the same ID?
How can I read 2 devices of the same type????
by alonsoBrain
Mon Oct 08, 2007 9:07 am
i-Bot wrote:What devices were you think of using ?
I'm using a Nintendo Nunchuck Wii device.
I've implemented this
http://www.windmeadow.com/node/42
and now I like to modify it to read 2 Nunchuck devices...
Is it posible?
Or must I use another microcontroller to read the data
?
by NovaOne
Mon Oct 08, 2007 8:09 pm
Have you got i2c comms with a single nunchuk working yet?
I'm sure you know that the nunchuk has a default slave address of 0x52 and looking at the PCB http://wiire.org/Wii/nunchuk U1 is a custom controller, so i may be impossible to alter this address?
If you bit banging on general purpose i/o lines(?) and have two spare lines why not bit bang the second nunchuk separately.
Good luck
I'm sure you know that the nunchuk has a default slave address of 0x52 and looking at the PCB http://wiire.org/Wii/nunchuk U1 is a custom controller, so i may be impossible to alter this address?
If you bit banging on general purpose i/o lines(?) and have two spare lines why not bit bang the second nunchuk separately.
Good luck
by Robo1
Tue Oct 09, 2007 11:55 am
Hi me again.
Just finished reading the link. Very interesting I have a couple of Arduino so might give it a try. might even see if I can make it wireless. I would still use two Arduino mini's have them mounted on bot then you could use them to pre-process the data and as analogy inputs.
Bren
Just finished reading the link. Very interesting I have a couple of Arduino so might give it a try. might even see if I can make it wireless. I would still use two Arduino mini's have them mounted on bot then you could use them to pre-process the data and as analogy inputs.
Bren
by NovaOne
Wed Oct 10, 2007 7:57 pm
Ignore my earlier post, I missed the point. 
I like the sound of your wireless idea Bren
For £15 I will definitely buy one to play with. (may be put a plug on the side of my PS1 controller for an alternative control method)
alonsoBrain -I may be mad but i would consider replacing the microcontroller in one (master) nunchuck and read the analogue signals from the accelerometers directly. You could then also optionally fit a bluetooth or zigbee transmitter inside the master nunchuck, while reading the second slave (unmodified) nunchuck via i2c.
Possibly not the cheapest or best option for you 
Chris
I like the sound of your wireless idea Bren
For £15 I will definitely buy one to play with. (may be put a plug on the side of my PS1 controller for an alternative control method)
alonsoBrain -I may be mad but i would consider replacing the microcontroller in one (master) nunchuck and read the analogue signals from the accelerometers directly. You could then also optionally fit a bluetooth or zigbee transmitter inside the master nunchuck, while reading the second slave (unmodified) nunchuck via i2c.
Possibly not the cheapest or best option for you
Chris