Question about Compas-module Devantech CMPS03

[nokrah]

Hello,

I just got my Compas-module Devantech CMPS03 and was wondering whether i have to add any pull-up resistors when connecting it by I2C to my Atom Bot Board, which carries a Basic Atom Pro 28 Pin (the pink one). Or does the ABB already handle this issue?

I hope this question isn’t too trivial, but my main concern in this project is programming not the electronics. I still have some resistors lying around so that should not be a problem, i just don’t want to fry anything by leaving something important out.

Thanks for any assistance!

[linuxguy]

@Nokrah

Hello,

I just got my Compas-module Devantech CMPS03 and was wondering whether i have to add any pull-up resistors when connecting it by I2C to my Atom Bot Board, which carries a Basic Atom Pro 28 Pin (the pink one). Or does the ABB already handle this issue?

The ABB is just a carrier board for the microcontroller, with a few nice additions for output (like the speaker).

Since you can do I2C on any pair of pins, you should provide your own pull ups according to the I2C specifications.

8-Dale

[robotdude]

@linuxguy

@Nokrah

Hello,

I just got my Compas-module Devantech CMPS03 and was wondering whether i have to add any pull-up resistors when connecting it by I2C to my Atom Bot Board, which carries a Basic Atom Pro 28 Pin (the pink one). Or does the ABB already handle this issue?

The ABB is just a carrier board for the microcontroller, with a few nice additions for output (like the speaker).

Since you can do I2C on any pair of pins, you should provide your own pull ups according to the I2C specifications.

8-Dale

What are the I2C specifications? I will need to do another run of the ABB board soon, so I thought I would make some changes. I want to add I2C support, drop the BS2 play station port (this is the one with an inverter) it will not effect the Atom PS2 use. Actually I will create a new topic for this…

[linuxguy]

@Robot Dude

What are the I2C specifications? I will need to do another run of the ABB board soon, so I thought I would make some changes. I want to add I2C support, drop the BS2 play station port (this is the one with an inverter) it will not effect the Atom PS2 use. Actually I will create a new topic for this…

Oh boy, good!

Here is the NXP (founded by Philips, creators of i2c) link for i2c information. I also have a PDF from NXP with all you would ever want to know about i2c if you’d like me to e-mail it to you.

8-Dale