How to use Jumper T-ProHere, we will introduce and explain how to use Jumper T-Pro OpenTX radio.
Table of contents
Jumper T-Pro Radio Transmitter Hall Gimbal 2.4G
JP4-in-1 Multi-protocol module included. DSM2/X, FrSKY, SFHSS, Flysky, Flysky AFHDS2A, Hubsan and more. OpenTX/EdgeTX firmware. Hall sensor gimbals. ELRS Nano / TBS CRSF Nano compatible module bay on the rear side. USB-C internal charging. Up to 16 channels of output (depending on the receiver).
Introducing Jumper T-Pro
Jumper T-Pro official site (Jumper)
Batteries, strap, USB Type-C cable and microSD card are not included. You have to prepare yourself.
How to use ExpressLRS (ELRS): Long-distance / high-speed communication protocol
Power button is shining green in the center. Left and right of the power button are trim buttons. The trim button is made like a joystick and can be operated by tilting it up, down, left and right. To boot the radio in DFU/Bootloader Mode, tilt this trim button inward and press the power button.
The gimbal stick end screw has a diameter of 3 mm.
How to use Jumper T12 Pro
How to use RadioMaster Zorro
How to update radio firmware
Battery setting and charging
Three holes around the Jumper logo seal in the center are screw holes for attaching NANO module bay adapter. NANO module is installed via the adapter.
Buy 18650 type battery (Amazon.com)
Buy 18650 type battery (Amazon.co.uk)
It takes about 12 hours to fully charge, depending on the capacity of the battery. The lamp goes out when charging is complete. Since the area around the USB connector of housing is very narrow, it may not be possible to insert it depending on the cable. Use a cable whose connector is as thin as possible.
Get a microSD card image
For the procedure to prepare the microSD card, see How to prepare microSD card for OpenTX radio .
How to prepare microSD card for OpenTX radio
OpenTX Downloads page (OpenTX)
If you press and hold [ENTER] [PAGE] keys, different menu screens will be called.
|Name of control||Function||Description|
|ENTER||Decide / Confirm||Confirm the change / input. Or select an item. Click [MENU WHEEL] to operate as [ENTER] button.|
|EXIT/RETURN||Cancel / Back||Cancel the change / input. Or return to the previous screen.|
|PAGE||Screen switching||In the setting screen consisting of multiple pages, move to the next page / previous page. Click [PAGE] key to switch to the next page, and long press to switch to the previous page.|
|CURSOR||Move cursor / selected position||Move the cursor. Turn [MENU WHEEL] to move cursor.|
|MODEL/SYSTEM||Calling MODEL / RADIO menu||Call the MODEL / RADIO(SYSTEM) menu. Click [MDL/SYS] key to bring up MODEL menu, and press and hold it to bring up RADIO(SYSTEM) menu.|
- Change screen
- Press [PAGE] key on the main screen to switch between four main screens and "CHANNELS MONITOR" screen.
- Change contents
- You can switch contents of each main screen by turning scroll wheel on the main screen.
- Telemetry screen
- Press and hold [PAGE] key on the main screen to display Telemetry screen.
- Statistics / DEBUG screen
- Press and hold scroll wheel on the main screen and select "Statistics" menu to display Statistics screen. If you press [PAGE] key here, you can switch to "DEBUG" screen.
Jumper T-Pro is equipped with a function switch, which is rare for handheld type radios. After upgrading OpenTX to 2.3.15, you can set switch SW1 - SW6 as a function switch by specifying "2POS" on [SETUP] screen of each MODEL. See below for details.
|SA||Top of left hand||3 position||Type can be set in [RADIO]-[HARDWARE]-[Switches] fields. Type can be selected from 3POS / 2POS / Toggle / None.|
|SB||Top of right hand|
|SC||Top of right hand||2 position|
|SD||Top of left hand|
|S1||Top of left hand||Pot||Type can be set in [RADIO]-[HARDWARE]-[Pots] fields. Type can be selected from Pot / Multipos (Multi-position switch) / Pot w. Det (Pot with detent) / None.|
|S2||Top of right hand|
|SW1 - SW6||Above LCD display. The left end is SW1.||2 position||Type can be set for each model in [MODEL]-[SETUP]-[Function Switches] fields. Type can be selected from 2POS / Toggle / None.|
Yaw gimbal failureTwo months after purchase, Yaw gimbal behaves strangely. Sometimes suddenly Yaw axis becomes very unresponsive. When I look at "CHANNELS (MIXERS) MONITOR" screen of OpenTX, I can see that output does not follow even if I move the stick. (See YouTube video below) I tried calibrating sticks many times, but the phenomenon did not improve. I am currently contacting Jumper support. What kind of response will they do ... 04/29 Two weeks after the inquiry. No reply after receiving an email confirming the serial number a week ago. The reaction is very bad. 05/06 3 weeks from inquiry. I send emails every week, but no reply from support. It's a pity that the response is so bad. 05/10 Finally, support has replied that they will ship an alternative gimbal this week. I patiently wait for it to arrive. 05/12 Support contacted me to ship a replacement gimbal and I got Tracking #.
When I compare it again, this radio uses a gimbal that is one size smaller than RadioMaster Zorro, TX12 series, and Jumper T12 series. The wiring method is also different from these radios (cables for two axes are combined into one connector), so these gimbals cannot be used. Perhaps the strange failure this time is also caused by this special wiring configuration.
I will try to exchange it soon.
Jumper T-Pro Yaw Gimbal malfunction Watch on YouTube
Gimbal replacement methodHere, We will explain the procedure to replace Jumper T-Pro gimbal. However, this task is not so easy. In the worst case, it may damage the radio. This site does not mean that we recommend replacing the gimbal. Please do it at your own risk.
Except for top two screws, it is difficult to remove screws from back cover, so it may be better to remove them together with the back cover.
Next, remove the board on which SA and SB switches are attached. These boards can be removed by removing two screws circled in red in the figure.
By the way, the two connectors enclosed in blue frame are gimbal connectors. One gimbal is connected to the board with only one connector.
The point to note when assembling is the mounting screws. The radio's housing is small and the screws are difficult to insert, so it may be dropped into the main unit case. Use tweezers, etc., to attach it carefully. Gimbal mounting screws are screwed into the gimbal first, and then attached to the housing together with the gimbal.
Screws dropped into the case may stick to gimbal's hall sensor magnets. If you lose a screw, the first thing to check is to take a close look at the gimbal.
And just before closing the back cover, check that the dial (Pot: Potentiometer) connector is not disconnected from the board, and adjust the stick tension.
If the back cover doesn't fit snugly, the cable is stuck somewhere. Please reinsert it carefully.
Let it sit for a while, and if nothing seems to be wrong, turn on the radio. If OpenTX starts successfully, it is completed.
Stick (Gimbal) calibration