XP12 Frequency Panel

This project shows the COM and NAV frequency in XP12 in a 16*2 LCD connected to an Arduino Uno.

Requirements

• XPlane 12 (not checked on XP11 or lower)
• Arduino Uno (any type of Arduino is OK) and USB cable
• 4 male-female jumper cables
• 16*2 LCD with I2C interface
• Node.js (tested on 20.11.1 but any other version could work)
• Arduino IDE with liquidcrystal_i2c.h installed(for uploading code on arduino)

Circuit

Installation

Download Node.js from here

Open the command prompt, and type:

> git clone https://github.com/sw08/xp12-frequency-panel.git
> cd xp12-frequency-panel
> npm i

Before we run the program, we need to setup XP12.

1. Find COM 1 & COM 2 frequency indexed 96 (97 if you want NAV frequency, not COM frequency)
2. Check the Network via UDP checkbox, which is the last in the row.
3. Set UDP Rate to around 7~8. This may vary depending on the performance of the arduino and your computer.
4. Check Send network data output checkbox.
5. Set IP Address to the ip of your computer which you can find in the Network settings as below.
6. Set Port to d available one, for example 49001.

After finishing circuit, connect the arduino to your computer and find the usb port (for me it was COM8) it's connected to. With Arduino IDE, compile and upload freqPanel.ino onto your Arduino in arduino directory.

Lastly, open the index.js in xp12-frequency-panel directory, and change the serial port and udp port to what you set/found right before.

> node index.js

Now if you load XP12, you can see the LCD displaying COM1 active/stanby frequency.

Also, by commenting/uncommenting L40~L47 in index.js and editing L48/L49, you can change the displayed frequencies to COM2, NAV1 or NAV2.

License

This project is under the MIT license