# Real Dash Aux inputs

**URL:** <https://forum.realdash.net/t/real-dash-aux-inputs/4316>\
**Category:** Custom Hardware / Electronics\
**Created:** [December 16, 2023, 1:07pm UTC](https://forum.realdash.net/t/real-dash-aux-inputs/4316 "2023-12-16T13:07:50Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Luis\_Santos](https://forum.realdash.net/letter_avatar_proxy/v4/letter/l/c0e974/32.png) [@Luis\_Santos](https://forum.realdash.net/u/Luis_Santos)\
**Post date:** [December 16, 2023, 1:07pm UTC](https://forum.realdash.net/t/real-dash-aux-inputs/4316/1 "2023-12-16T13:07:50Z")

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I am converting my car from carburetion to Speeduino electronic fuel injection. I want to use Real Dash to replace the vehicle’s old dashboard. Since Speeduino does not capture fuel level, turn signal, and headlights signals, I cannot display this information on Real Dash. I came across the 2SerialToRealDash project on GitHub ([GitHub - Autohome2/2SerialToRealdashCAN](https://github.com/Autohome2/2SerialToRealdashCAN)), which allows capturing these car signals and sending them to Real Dash. However, I couldn’t quite understand the electrical connection details. Has anyone successfully done this or something similar?

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**Author:** ![Markze](https://forum.realdash.net/letter_avatar_proxy/v4/letter/m/e19b73/32.png) [@Markze](https://forum.realdash.net/u/Markze)\
**Post date:** [December 16, 2023, 10:48pm UTC](https://forum.realdash.net/t/real-dash-aux-inputs/4316/2 "2023-12-16T22:48:06Z")

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There is another thread going on this topic already. You can buy a few different ready made devices or you can use and Arduino or Raaperry PI and there are a number of threads showong how to do that. Those devices are all 5V operation so you need a circuit board with some voltage dividers and power supply converter etc.

I successfully used Arduino to do it, the basic code and XML data mapping files are on the realdash website here:

[https://www.realdash.net/test/manuals/realdash\_can.php](https://www.realdash.net/test/manuals/realdash_can.php)

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**Author:** ![szwajcow](https://forum.realdash.net/letter_avatar_proxy/v4/letter/s/96bed5/32.png) [@szwajcow](https://forum.realdash.net/u/szwajcow)\
**Post date:** [December 20, 2023, 8:13pm UTC](https://forum.realdash.net/t/real-dash-aux-inputs/4316/3 "2023-12-20T20:13:34Z")

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I have done this using RD on RPi4. Logic signal ( turn, light, etc) to GPIO RPi4 and analog ( fuel level) through ADC speeduino. Not done jet but working good on table

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**Author:** ![Luis\_Santos](https://forum.realdash.net/letter_avatar_proxy/v4/letter/l/c0e974/32.png) [@Luis\_Santos](https://forum.realdash.net/u/Luis_Santos)\
**Post date:** [January 2, 2024, 3:09pm UTC](https://forum.realdash.net/t/real-dash-aux-inputs/4316/5 "2024-01-02T15:09:14Z")

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Can you explain how you did this?