I also ordered another SCD30 sensor, with the hope that maybe the first one is faulty. They're very sensitive to static discharge, so perhaps I damaged mine despite my precautions. I'll find out and post if the second one works when I receive it in a couple days.
paulvha wrote: ↑Mon Jul 09, 2018 12:50 pm
How did you connect the SCD30? is VDD 5V or 3.3v ? Is the SEL VDD or GND/floating ?
I tried both 3.3 and 5V. I believe the datasheet says the sensor runs on 3.5 to 5.5 V, so my preference was to use 5V. I left SEL floating. Connecting SEL to VDD causes the sensor to communicate using modbus instead of I2C.
paulvha wrote: ↑Mon Jul 09, 2018 12:50 pm
When you state it just trying to connect? which sketch do you use and what do you see ?
I can't speak for Timo, but I was using Example_2_SetOptions. I believe it printed something like the following:
SCD30 Example
Getting measurements ............................................................................ (just keeps adding dots...)
It would do this regardless of whether the sensor was physically connected or not. Like Timo, I was able to find the sensor with I2C_scanner when it was connected.
PS: Timo, I don't mean to hijack your thread but it seems like we have a very similar problem so hopefully we will both get our answers at the same time!