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https://github.com/pascallanger/DIY-Multiprotocol-TX-Module.git
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60 lines
4.2 KiB
Markdown
60 lines
4.2 KiB
Markdown
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# Compatible Transmitters
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Any Tx that provides a PPM output (like a trainer port, or a RF module bay) is compatible with the DIY Multiprotocol module. In practice, most of the documentation on this site is focused on building modules that slip into your transmitter’s module bay.
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{insert picures of different modules}
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There are two different options for the interface between the Mulitprotocol Module and the transmitter: PPM and Serial. The considerations are different for each.
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- **PPM** is more generic, easy to implement and will work with most transmitters.
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- **Serial** requires custom firmware on the transmitter but brings added functionality including telemetry and protocol selection through the Tx interface
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##PPM
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The DIY Mulitprotocol module supports industry standard PPM interface that works with all transmitters with either a module bay, and/or a trainer port. Even the older 72MHz FM radios support this standard.
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When using the standard PPM Tx output, the protocol selection is achieved through a 16 position rotary switch on the module. This enables 15 protocol/sub-protocol/options combinations to be selected. Binding is achieved by pressing a bind button on the back of the module (see picture below)
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<img src="images/4-in-1_Module_PPM_Controls.jpg" width="150" height="180" />
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Since the module supports literally hundreds of protocol/sub-protocol/options combinations, you must select which of these will map to the 15 positions on the switch. Refer to the [Compiling and Programming](Compiling.md) page for information on how to do his.
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Telemetry is available as a serial 9600 8 n 1 output on the TX pin of the Atmega328p using the FrSky hub format for Hubsan, FrSkyD, FrSkyX and DSM format for DSM2/X.
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You can connect it to your TX if it is telemetry enabled or use a bluetooth adapter (HC05/HC06) along with an app on your phone/tablet ([app example](https://play.google.com/store/apps/details?id=biz.onomato.frskydash&hl=fr)) to display telemetry information and setup alerts.
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For transmitter setup using the PPM protocol go to the [PPM Setup page](PPM_Setup.md)
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##Serial
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Transmitters that run er9X, erSky9X or OpenTx firmwares - like the FrSky Taranis and FlySky TH9X/Turnigy 9X/R family of transmitters - have the option of using a fast, two-way serial, communication protocol between the Tx and the DIY Multiprotocol module. Using this serial communication protocol has some significant advantages:
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1. selecting the specific radio protocol (e.g. DSM) and the sub protocol (e.g. DSMX) directly in the menu system of the Tx (see the picture below)
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1. binding through the menu on the Tx
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1. range checking through the menu on the Tx
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1. enabling two-way telemetry for telemetry capable receivers and protocols.
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<img src="images/OpenTx_Multi_Menu.jpg" width="470" height="180" /> <img src="images/er9X_Multi_Menu.jpg" width="250" height="180" />
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This serial protocol does not require any hardware modifications, but **will** require updating the firmware on your radio.
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Transmitters and firmware combinations that support the Serial protocol are:
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{Can someone check the transmitters click through to the right pages? How should the "erSky9x" boards be handled? A separate Tx- page or a link to the Taranis page?}
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Transmitter|Firmware Options
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:----------|:-------
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[FrSky Taranis/Plus/9XE](Tx-Taranis.md)| [erSky9x](http://www.er9x.com), [OpenTx 2.1.8 Multi](http://plaisthos.de/opentx/)
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[Turnigy 9X/9xR](Tx-FlyskyTH9X.md)|[er9x](http://www.er9x.com)
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[Turnigy 9XR-Pro](Tx-Taranis.md)|[erSky9x](http://www.er9x.com)
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[FrSky TH9x](Tx-FlyskyTH9X.md)|[er9x](http://www.er9x.com)
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SKY board|[erSky9x](http://www.er9x.com)
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AR9X board|[erSky9x](http://www.er9x.com)
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9Xtreme board|[erSky9x](http://www.er9x.com)
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AR9X UNI board|[erSky9x](http://www.er9x.com)
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Click on your transmitter above to view specific setup instructions.
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Other Notes:
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- er9X and erSky9X firmware already supports Multiprotocol Module as a standard feature. At time of writing it looks like that the next major release of OpenTx - OpenTx 2.2 - will have DIY Mulitprotocol support as a standard feature.
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- Owners of Walkera Devo transmitters should look at the [Deviation-Tx](http://www.deviationtx.com) project for how to achieve the same end goal with your transmitters.
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