# Connecting UR3e & Raspberry Pi 4 with Ethernet **URL:** \ **Category:** General Application Help: How do I?\ **Created:** [January 23, 2025, 5:56pm UTC](https://forum.universal-robots.com/t/connecting-ur3e-raspberry-pi-4-with-ethernet/38213 "2025-01-23T17:56:21Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![uestr2](https://avatars.discourse-cdn.com/v4/letter/u/dbc845/32.png) [@uestr2](https://forum.universal-robots.com/u/uestr2)\ **Post date:** [January 23, 2025, 5:56pm UTC](https://forum.universal-robots.com/t/connecting-ur3e-raspberry-pi-4-with-ethernet/38213/1 "2025-01-23T17:56:22Z")
Hi everyone, I am currently working on trying to connect the UR3e robot with a Raspberry Pi 4 with a ethernet cable. Last month I was able to have success and send code from the Raspberry Pi to the robot but I am not having that same type of success currently. My current process of connecting both is as follows: - Turn on both UR3 and Raspberry Pi 4 (having an Ethernet cable running into both) UR3e robot - Activate arm and have it in “Remote” mode. The IP address: 192.168.1.2 and netmask: 255.255.255.0 Raspberry Pi - In a command prompt I enter “sudo ifconfig eth0 192.168.1.2 netmask 255.255.255.0” until there’s a connection. I also ping the IP to make sure there is connection. - Open Thonny and run my code: Import urx rob = urx.Robot(“192.168.1.2”) After the code I get Tracebacks and a connection refused error. Is there any way to fix this issue or simplify the process if possible? I’m relatively new to all of this so I might be missing something simple. ---
**Author:** ![gabriel.iancu](https://avatars.discourse-cdn.com/v4/letter/g/b5ac83/32.png) [@gabriel.iancu](https://forum.universal-robots.com/u/gabriel.iancu)\ **Post date:** [January 29, 2025, 10:49pm UTC](https://forum.universal-robots.com/t/connecting-ur3e-raspberry-pi-4-with-ethernet/38213/2 "2025-01-29T22:49:39Z")
What is the ip of the RPi? Are you using RTDE commands on port 30004 or how do you actually exchange data with the robot?