# Fendt 300 Com 3 Arms/3 point hitch control

**URL:** <https://discourse.agopengps.com/t/fendt-300-com-3-arms-3-point-hitch-control/19145>\
**Category:** Hydraulic Systems\
**Created:** [13 April 2025 13:06 UTC](https://discourse.agopengps.com/t/fendt-300-com-3-arms-3-point-hitch-control/19145 "2025-04-13T13:06:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![wiedzmin](https://discourse.agopengps.com/letter_avatar_proxy/v4/letter/w/9d8465/32.png) [@wiedzmin](https://discourse.agopengps.com/u/wiedzmin)\
**Post date:** [13 April 2025 13:06 UTC](https://discourse.agopengps.com/t/fendt-300-com-3-arms-3-point-hitch-control/19145/1 "2025-04-13T13:06:08Z")

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Hi guys,  
I would like to control the 3 point lift through the agopen.

I’m going to use an arduino with a relay board for this, only problem is that I don’t know how I can connect to the arms lever.

Would anyone be able to help me with this?

> **[Fendt 300 Vario | PDF | Transmission (Mechanics) | Clutch](https://www.scribd.com/doc/258739512/Fendt-300-Vario?v=0.956)**
>
> Fendt Tractors

 ![obraz_2025-04-13_145632598](https://discourse.agopengps.com/uploads/default/original/3X/1/1/11d48cd5f36c679d9da29d69d13eef8c176d4953.jpeg)  
 ![obraz_2025-04-13_145701436](https://discourse.agopengps.com/uploads/default/original/3X/4/7/4704eff715735e8d4e82af572b6f2c8f9b68c16a.jpeg)

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**Author:** ![Karja](https://discourse.agopengps.com/letter_avatar_proxy/v4/letter/k/3d9bf3/32.png) [@Karja](https://discourse.agopengps.com/u/Karja)\
**Post date:** [13 April 2025 21:05 UTC](https://discourse.agopengps.com/t/fendt-300-com-3-arms-3-point-hitch-control/19145/2 "2025-04-13T21:05:41Z")

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> [@Fendt Farmer, Vario 200, 300 Hydraulic lift machine modul](https://discourse.agopengps.com/t/fendt-farmer-vario-200-300-hydraulic-lift-machine-modul/17303):
>
> I’m currently in the process of setting up a system on a Fendt Farmer. Is there a way that the Arduino can continuously supply power to the corresponding relay when using the hydraulic lifting function? Can I adjust this in the sketch? So far, the Arduino only controls the relay for a few seconds at a time. The Electrohydraulic Lifting Mechanism Control (EHR 4) of the three-point power lift requires constant power for the control to work. Thanks for help in advance!