# Multiple m0138 ESCs connected to a computer.

Source: https://forum.modalai.com/topic/5096/multiple-m0138-escs-connected-to-a-computer
Category: ESCs, Sensors and Accessories (https://forum.modalai.com/category/15/escs-sensors-and-accessories)
Tags: esc
Posted: 2026-03-11 05:16:33 UTC by sjt277
Replies: 1 · Views: 1372

## sjt277 · 2026-03-11 05:16:33 UTC

Hi
I was checking on if it is possible to connect multiple m0138 escs to a computer for bench testing? If yes how would you approach it as a plug and play method would lead to id collisions between the ESCs.
Thanks

## Reply by Alex Kushleyev (ModalAI staff) · 2026-03-18 04:57:03 UTC

@sjt277 , 

The simplest approach is to use a separate USB-to-serial adapter for each ESC. 

You can set up udev rules to map and distinguish the specific usb-to-serial adapters (using their unique serial numbers) to aliases in `/dev/`, such as `/dev/esc0`, `/dev/esc1`, etc.

Then run your testing using different USB devices to access each ESC (i am assuming you are using `voxl-esc` tools?).

For example, here is some relevant information:  https://askubuntu.com/questions/49910/how-to-distinguish-between-identical-usb-to-serial-adapters

Does that help?

Alex