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Open source radio control system for almost anything.

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# FreeTX
Open source radio control system for almost anything.  
Remotely operate model airplanes, multicopters, helicopters, boats, land vehicles, robots, animatronics, etc.

## Main features
- 20 fully proportional RC channels, each encoded with 10 bits.
- Configurable RC channel output signal format.
- Update rate of 50x per second for all RC channels.
- Receiver binding, adjustable RF power, frequency hopping.
- Reverse, subtrim, endpoints, failsafe, dual rates and expo, custom curves, flight modes.
- Powerful mixer system, logical switches, function generators, counters, timers.
- Telemetry, alarms, warnings, notifications, home screen widgets, custom splash screen, etc.
- Model memory, I2C EEPROM and SD card supported. Model types, context-aware nomenclature.
- Intuitive user interface.

## Hardware and Schematics
The transmitter and receiver schematics can be found in the 'schematics' folder. 
The major components are
- 1x Atmega2560 microcontroller, 2x Atmega328p microcontrollers.
- 2x SX1276/77/78/79 or RFM95 based Lora modules. Other RF modules can possibly be used with some modifications to the source code.
- A 128x64 graphical LCD with KS0108 or ST7920 controller. Any other 128x64 LCD can however be used (provide own driver code).

## User interface
Three buttons are used for navigating the user interface i.e. Up, Select, Down. Long press Select to go Back.
<p align="left">
<img src="doc/images/img1.svg"/>
</p>

## User guide
[User guide](doc/user_guide.md)

A PDF version is also available [here.](https://raw.githubusercontent.com/buk7456/FreeTX/main/doc/FreeTX%20-%20User%20manual.pdf)

## Gallery

[<img src="doc/images/img6.jpg" width="256"/>](doc/images/img6.jpg)
[<img src="doc/images/img2.jpg" width="256"/>](doc/images/img2.jpg)
[<img src="doc/images/img4.jpg" width="256"/>](doc/images/img4.jpg)
[<img src="doc/images/img10.jpg" width="256"/>](doc/images/img10.jpg)
[<img src="doc/images/yt.jpg" width="256"/>](https://www.youtube.com/watch?v=rDpRMRE8av0)
[<img src="doc/images/yt2.jpg" width="256"/>](https://www.youtube.com/watch?v=9EZkyRHkMpg)

## Frequently Asked Questions
Got a question? [See the FAQ.](doc/faq.md)

---

This project is based on an older project found [here.](https://github.com/buk7456/Arduino-LoRa-RC-transmitter-and-reciever)

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