# Emonpi - multiple serial-usb

**URL:** <https://community.openenergymonitor.org/t/emonpi-multiple-serial-usb/5327>\
**Category:** emonPi\
**Tags:** directserial\
**Created:** [11 October 2017 11:48 UTC](https://community.openenergymonitor.org/t/emonpi-multiple-serial-usb/5327 "2017-10-11T11:48:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![promy](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/p/ee59a6/32.png) [@promy](https://community.openenergymonitor.org/u/promy)\
**Post date:** [11 October 2017 11:48 UTC](https://community.openenergymonitor.org/t/emonpi-multiple-serial-usb/5327/1 "2017-10-11T11:48:26Z")

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Can i get 2 (or more) inputs via a serial-usb connected to the emonPi?  
Now i have one connected via the [RFM2Pi] in [intercaces] by changing the comport and baudrate.  
I would like to connect 2nd arduino via serial.

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<div class="post-metadata">

**Author:** ![glyn.hudson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/glyn.hudson/32/35003_2.png) [@glyn.hudson](https://community.openenergymonitor.org/u/glyn.hudson)\
**Post date:** [11 October 2017 16:52 UTC](https://community.openenergymonitor.org/t/emonpi-multiple-serial-usb/5327/2 "2017-10-11T16:52:00Z")

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Yes, you can use a USB serial device e.g. `/dev/ttyUSB0` see emontx direct serial example for emonhub:

> **[emonhub/conf/interfacer\_examples/directserial-serialtx3e at emon-pi ·...](https://github.com/openenergymonitor/emonhub/tree/emon-pi/conf/interfacer_examples/directserial-serialtx3e)**
>
> emon-pi/conf/interfacer\_examples/directserial-serialtx3e

```auto
[interfacers]
### This interfacer manages the EmonTx3 ESP format serial
[[SerialTx3e]]
     Type = EmonHubTx3eInterfacer
      [[[init_settings]]]
           com_port= /dev/ttyUSB0
           com_baud = 115200
      [[[runtimesettings]]]
           pubchannels = ToEmonCMS,

```