SparkFun Forums

[nm1213]

Hello,

I've followed the hookup guide for I2C as outlined here:

https://learn.sparkfun.com/tutorials/ad ... okup-guide

It involves using 2x 4.7k resistors, and this works just fine. However, the board has two components that look suspiciously like resistors already built-in. My questions are as follows:

1. Do some versions of the ADXL345 board come with built-in 4.7k resistors?
2. If yes, can I ignore the diagram that says to use external resistors for the SDA and SCL lines?

Thanks!

N.

[darrellg]

The schematic for that breakout is at http://cdn.sparkfun.com/datasheets/Sens ... eakout.pdf. It shown no pullups for the I2C bus.

[nm1213]

Ok got it thank you!