# Grove Base Hat and documentation

**URL:** <https://discourse.nodered.org/t/grove-base-hat-and-documentation/44792>\
**Category:** General\
**Created:** [27 April 2021 08:45 UTC](https://discourse.nodered.org/t/grove-base-hat-and-documentation/44792 "2021-04-27T08:45:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![bcolias](https://avatars.discourse-cdn.com/v4/letter/b/e36b37/32.png) [@bcolias](https://discourse.nodered.org/u/bcolias)\
**Post date:** [27 April 2021 08:45 UTC](https://discourse.nodered.org/t/grove-base-hat-and-documentation/44792/1 "2021-04-27T08:45:07Z")

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I'm trying to use the ADC that is part of Seeed's Grove Base Hat. I'm using an RPI 3+. My simple project is to read the ADC from a soil sensor. The trouble I have is a lack of documentation to refer to. The Hat uses a STM32F030, but have no idea what node red palette to download or what other way to read the ADC. Will someone please help by pointing me in the right direction.  
Thanks,  
Bill

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**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [27 April 2021 09:09 UTC](https://discourse.nodered.org/t/grove-base-hat-and-documentation/44792/2 "2021-04-27T09:09:15Z")

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Since it communicates using I2C, you could try using the node-red-contrib-i2c node.

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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:** [26 June 2021 09:09 UTC](https://discourse.nodered.org/t/grove-base-hat-and-documentation/44792/3 "2021-06-26T09:09:44Z")

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