# How to connect sensors to Mangoh green

**URL:** <https://mangoh.discourse.group/t/how-to-connect-sensors-to-mangoh-green/1569>\
**Category:** mangOH Green\
**Created:** [June 19, 2018, 7:16am UTC](https://mangoh.discourse.group/t/how-to-connect-sensors-to-mangoh-green/1569 "2018-06-19T07:16:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![pavan](https://avatars.discourse-cdn.com/v4/letter/p/439d5e/32.png) [@pavan](https://mangoh.discourse.group/u/pavan)\
**Post date:** [June 19, 2018, 7:16am UTC](https://mangoh.discourse.group/t/how-to-connect-sensors-to-mangoh-green/1569/1 "2018-06-19T07:16:04Z")

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How to connect multiple sensors to mangoh green board directly? Is there any way we can connect sensors using I2C interface? or  
Do we need arduino shield only to connect sensors on mangoh green?

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**Author:** ![awneil](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/awneil/32/486_2.png) [@awneil](https://mangoh.discourse.group/u/awneil)\
**Post date:** [June 19, 2018, 7:49am UTC](https://mangoh.discourse.group/t/how-to-connect-sensors-to-mangoh-green/1569/2 "2018-06-19T07:49:08Z")

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I2C is available on the IoT expansion sockets.

Beware of the voltage levels!

Take a look at: [https://mangoh.io/iot-cards](https://mangoh.io/iot-cards)

and: [https://mangoh.io/buy-iot-cards](https://mangoh.io/buy-iot-cards) - in particular, the Renfell I2C SPI GPIO UART IoT Card: [https://mangoh.io/uploaded-documents/Buy/IoT%20Cards/Renfell/0107-10-R1.1-Interface-20161201.pdf](https://mangoh.io/uploaded-documents/Buy/IoT%20Cards/Renfell/0107-10-R1.1-Interface-20161201.pdf)