Comments: Si7021 Humidity and Temperature Sensor Hookup Guide
Looking for answers to technical questions?
We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.
If you've found an issue with this tutorial content, please send us your feedback!
I had the same issue, here what I found (on arduino MEGA, 5v): -if I power up the sensor with 3v3, it does not get found by the arduino. I think because the Logic Level of the SDA/SCL are on 5v -if I power up the sensor with 5v, it works fine, even if on the datasheet. For "working fine" I mean that gives me readings, they might not be accurate If some experts can give me a hint... I'm not sure about powering up at 5 volt this little guy
I cannot get this sensor to work, after having followed the guide with the redboard exactly. It is quite a challenge to troubleshoot, seems there is not a lot of documentation online.
Has anyone else had issues with reoccurring "Failed to read sensor" errors?