Project: Universal Flex Fuel Translator

How to use an Arduino Nano to translate the Hz output of a Continental Flex Fuel Sensor to a Analog Voltage output (using Pulse Width Modulation). An aftermarket Translator can easily cost $500, but with an Arduino Nano you can make one for $20.

Installation

Navigate to the How To Guide for instructions on building your own Flex Fuel Sensor Translator: https://github.com/NatashaBlong/Universal-Flex-Fuel-Translator/blob/main/A%20How%20To%20Guide.pdf

Credits:

Check out the FreqMeasure Library, created by Paul Stoffregen, and used in this project → https://www.arduinolibraries.info/libraries/freq-measure

Resources for Future Updates:

Serial Information for BlueTooth (not yet tested) → https://www.arduino.cc/reference/en/language/functions/communication/serial/

The Continental Ethanol Content Sensor also outputs the fuel temperature through a 1-5 millisecond pulsewidth (-40 - 125 C) → https://www.bmotorsports.com/shop/product_info.php/xrf/gshp/products_id/3408 Conversion Formula: C = [ 41.25 * Pulsewidth (ms) ] - 81.25

Step 3: Load the code

Upload the code contained in this sketch on to your board

Folder structure

 sketch123                => Arduino sketch folder
  ├── Flex_Fuel_Translator.ino                               => main Arduino file
  ├── Flex Fuel Translator Schematic (Arduino Nano).png      => schematic
  ├── A How To Guide.pdf                                     => A How to Guide
  └── ReadMe.adoc                                            => this file

Contributing

To contribute to this project please contact biospherexx https://id.arduino.cc/biospherexx

BOM

Add the bill of the materials you need for this project.

ID	Part name	Part number	Quantity
R1	1.8k Resistor	CF18JT1K80CT-ND	2
L1	100uF Capacitor	P15369CT-ND	1
A1	Arduino Nano	A000005	1

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