Powering BME280

[electronweather]

Hi

Which pins can I use to power up a sensor like the BME280? Currently I’m powering the sensor throughthe 3v3 pin but I want to turn off the sensorso that is why I want to use a pin which I can programm.

[ScruffR]

You may want to state which host device you are thinking of using too.

However, we encourage people to search the forum for possible parallel questions before asking the same or a similar question.
Please read the forum guidelines (especially Step 2)
https://community.particle.io/t/welcome-using-particle-forums-and-forum-etiquette

A simple search for "power BME280" could have turned up this thread

Power sensor that requires at least 3.6V

Dear all, I like Electron and its libraries behind. In my first project, I need to power some sensors that require 3.6V at least in order to get reliable readings. I can power other 3.3V sensors fairly easy from 3.3V pin on Electron. My current power source is using a 5V USB power bank without the LiPo battery. It works fine expect flashing red light. Any suggestions and comments about using >3.3V sensors on Electron? Thanks a lot.

You may find your answer in there (or one of the other threads returned by this search).
If you then can't get to your answer you are welcome to specify what else you need.