Closed BootNeos closed 3 years ago
Hi BootNeos
The Raspberry Pi should have internal pull-up resistors taking care of this point. In my experience, hooking up the SCD41 directly to the i2c pins as depicted in this repository works very well.
I hope that helps Best regards Björn
Okay, thanks! :)
Best regards
Just for clarification in case anybody lands at this issue:
Therefore, 1.8k is enough? (In the datasheet, 10k is suggested)
1.8kΩ is a lower resistance than the 10kΩ from the datasheet, so the pull (and thus current consumption) is stronger. See also https://www.i2c-bus.org/i2c-primer/how-i2c-hardware-works/
I am totally confused about the 'pull-up-resistor-topic'. Your image shows, that it is possible to connect the SCD41 directly to the I2C-Pins of the Raspberry Pi. This leads to my question: Is it right, that no extra pull-up resistors are needed? (Except the 1.8k ones in the raspberry pi) Therefore, 1.8k is enough? (In the datasheet, 10k is suggested)
Many thanks in advance.