How to daisy chain multiple QWIIK board

Qwiic System
1

Hello folks,

I do not understand the meaning of this sentence I found in every QWIIK board’s page:

“As a general rule of thumb, disable all but one pair of pull-up resistors if multiple devices are connected to the bus. To disable the pull up resistors, use an X-acto knife to cut the joint between the two jumper pads highlighted below.”

Here’s an example image.

16304-SparkFun_TMP102_Qwiic-I2CJumpers-Cropped.jpg

Which one of the following is true if I have 3 boards connected?

  1. I have to cut one of the joints (not two) on every board

  2. I have to cut two joints on every board but one (that is, in my case, on two boards out of three)

Thank you!

2

You need to make two cuts on all of the boards but one. It doesn’t matter which board has the pullups still connected.

/mike

3

It worked, thank you! :smiley: