Tips using OpenTX
User can't connect to the Transmitter via USB using OpenTX Companion
Some people might struggle to connect to their transmitter with OpenTX 2.0+ especially if you upgraded from a
previous version of OpenTX.
The reason you cant connect to OpenTX companion is because the firmware default USB function is Joystick when
you plug in a transmitter loaded with OpenTX 2.0+.
To connect to companion you need to hold the two horizontal trim levers towards the power switch whilst you
switch on. Then the Bootloader display will show and the user will have four options:
Write Firmware
Restore EEPROM
EXIT
Or plug in a USB cable for mass storage.
Chose the fourth option and connect your transmitter to the PC with your USB cable and two new drives will
appear on your PC one of them will be named Taranis ( DO NOT TOUCH THIS DRIVE) the other will, depending
on what drives you already have on your PC, have a drive letter. You can rename this drive to whatever you want,
we suggest it to name it “SD Card”. Then fire up OpenTX Companion and you will be able to read from and write to
the Transmitter.
When you unplug the USB ( best to do a safe eject) the TX screen will show the Bootloader again. Use the "-"
button to scroll down to Exit and press the ENT button. This will turn the TX to normal switch on mode.
Another option is to download OpenTX2.0+ with option (nojoystick) seelcted. This option disables the joystick
functionality in the firmware thus the default USB function is mass storage and as such you don't need to go into
the bootloader to upload eeprom etc.
Differences if updating with the Bootloader or using dfu-uti
When you write firmware with the TX switched on as explained in the previous section, you are using the V2>
Bootloader. The Bootloader can't update itself directly, but can updated by loading to the SD card and the update it
from there.
When you update the firmware with the TX switched off it uses the old dfu-uti STM32 Bootloader. This mode allows
to update the firmware and the latest V2 > Bootloader.
Use of the EDGE command which replaces Hshort and Hlong
TODO use text from
http://www.rcgroups.com/forums/showpost.php?p=28563984&postcount=301
http://www.rcgroups.com/forums/showpost.php?p=28578961&postcount=581
What is Inputs and the difference between "[I]Source" and “Source" in mixes
TODO use text from
43
Summary of Contents for OpenTX 2.0+
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