Hello,
I question myself if it is possible to use the differential endpoints of the Qwiicbus also in star configuration instead of the suggested daisy-chained one. I know it shouldn’t be done in star configuration, but might it be possible to do it with up to 8 devices and maximum cable length of 5 meter?
Thanks in advance!
PCA9615_star.pdf (41.9 KB)
QWIIC is nothing else than I2C, but with a defined connector, easy to connect and fewer cables are needed.
Type ‘I2C star configuration’ in Google and you will get a number of articles where people have asked the same question.
In short: it is possible, but use low speed and watch the length of the cables given the capacitive impact. Depending on the cable quality 5 meters might be pushing the limit.
Yes, I know about standard I2C, but I am asking about the PCA9615 chip specifically that is used in the dI2C boards of Qwiicbus. For this question I haven’t found anything on google so far.
got it now. Looks to be possible. Some answers in this post viewtopic.php?f=105&t=49512.
Thanks Paul! I will just give it a try and see how it’s gonna perform.