# Opengrade pcb board

**URL:** <https://discourse.agopengps.com/t/opengrade-pcb-board/16573>\
**Category:** Uncategorized\
**Created:** [10 May 2024 22:20 UTC](https://discourse.agopengps.com/t/opengrade-pcb-board/16573 "2024-05-10T22:20:10Z")\
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**Author:** ![Pat](https://discourse.agopengps.com/letter_avatar_proxy/v4/letter/p/8491ac/32.png) [@Pat](https://discourse.agopengps.com/u/Pat)\
**Post date:** [17 May 2024 02:10 UTC](https://discourse.agopengps.com/t/opengrade-pcb-board/16573/2 "2024-05-17T02:10:50Z")

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It would be different for OpenGrade X,  
but for OpenGrade and OpenGrade3D:

First you need a GPS receiver connected trough **USB**. With this you can use all feature but the automatic valve control.  
The standard Ardusimple F9P is a good choice.

The valve control is connected trough a second USB port with an Arduino nano. For the PCB I recommend the Original V2 or the Kaupoi. Put a cytron, a little joystick and some indicators lights.

There is also an option to use the CaseIH/John Deere auxiliary valve but I don’t know much about it, more info [here (grade control, post 426 and up)](https://discourse.agopengps.com/t/grade-control/1702/426)

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