2PX I2C Pullup?
I have a BS2PX on a Board of Education Development Board (Serial Version).
I am getting ready to connect my Matrix Orbital GLK12232-25-WBL thru the I2C bus.
I am also going to use this I2C expansion board.. www.roboticsconnection.com/catalog/item/988888/2309377.htm
Should I be using a pullup ressistor? 4.7K?
I ask because I already had a UM-FPu V2 connected thru the I2C expansion board and it all seemed to work fine.
I am getting ready to connect my Matrix Orbital GLK12232-25-WBL thru the I2C bus.
I am also going to use this I2C expansion board.. www.roboticsconnection.com/catalog/item/988888/2309377.htm
Should I be using a pullup ressistor? 4.7K?
I ask because I already had a UM-FPu V2 connected thru the I2C expansion board and it all seemed to work fine.
Comments
It is possible that the expansion board you're using provides the pull-up of course. I don't have time to read the specs, but with the nominal value of a pull-up most designers choose, it won't do any harm to add your own pull-up at the Stamp pin. [noparse][[/noparse]And yes, 4.7k is a good value.]
And after closer indpection last night, It turns out I had 4.7K pullups on the little circuit board I made to mount the UM-FPu on. So I did have pullups.
I cut them off, and mounted them on the expansion board in the places that it had for putting pullups..
Thanks again for helping clear things up [noparse]:)[/noparse]