# BME280 Sensor Init failed -\>Error: , Remote I/O error"

**URL:** <https://discourse.nodered.org/t/bme280-sensor-init-failed-error-remote-i-o-error/46205>\
**Category:** General\
**Created:** [25 May 2021 10:25 UTC](https://discourse.nodered.org/t/bme280-sensor-init-failed-error-remote-i-o-error/46205 "2021-05-25T10:25:22Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Beginner96](https://avatars.discourse-cdn.com/v4/letter/b/48db29/32.png) [@Beginner96](https://discourse.nodered.org/u/Beginner96)\
**Post date:** [25 May 2021 10:25 UTC](https://discourse.nodered.org/t/bme280-sensor-init-failed-error-remote-i-o-error/46205/1 "2021-05-25T10:25:22Z")

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Hello !  
I tried to connect this bme280

> **[WaveShare BME280 Environmental Sensor, Temperature, Humidity, Baromet, 11,99 €](https://eckstein-shop.de/WaveShare-BME280-Environmental-Sensor-Temperature-Humidity-Barometric-Pressure)**
>
> Übersicht Ein winziger Sensorausbruch mit BME280 an Bord, der die Umgebungstemperatur, die Luftfeuchtigkeit und den barometrischen Druck erfasst Er unterstü

to my raspberry 4B. I get the following I2C adress:

![Screenshot 2021-05-25 121912](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/7/d/7d513db25bacbbc6c22c3611ee9b8f4b31b19333.jpeg)

When I want to get the data in node red. the following happens.

 ![Screenshot 2021-05-25 122041](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/e/7/e76c372e945d83104fe7a99eac9c359a45716af7.jpeg)

I don't know what I did worng. I uninstalled / installed the node "node-red-contrib-bme280", I tried to use other bme280 nodes, I made updates, I checked the connection, everything seems fine. When I start node red in the command prompt I get the same report.  
I hope someone can help me. Best regards

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**Author:** ![ghayne](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ghayne/32/39_2.png) [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Post date:** [25 May 2021 11:01 UTC](https://discourse.nodered.org/t/bme280-sensor-init-failed-error-remote-i-o-error/46205/2 "2021-05-25T11:01:48Z")

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In the documentation for the node there is this bit of advice:

> **Caveat** : Check your permissions to the /dev/i2c-xx devices. The user running node-red need access to writing and reading. Refer to [i2c-bus](https://github.com/fivdi/i2c-bus) to find how to grant access to your user to the /dev/i2c-xx device files.

Is this maybe your problem?

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [24 July 2021 11:02 UTC](https://discourse.nodered.org/t/bme280-sensor-init-failed-error-remote-i-o-error/46205/3 "2021-07-24T11:02:28Z")

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