#Jumper T15 & External RadioMaster Tx module ELRS issue

1 messages · Page 1 of 1 (latest)

mortal venture Dec 3, 2024, 11:37 PM

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Seasons Greetings All - (Not quite a ELRS question but). My T15 with the internal ELRS (latest version) talks quite happily to my ELRS receiver using the MAVLink protocol over CRSF @ 400000 baud.
I have a RadioMaster Ranger Tx module installed in the T15 back module bay as a test scenario. In EdgeTx I can select the external bay and go into the config, set to CRSF and 400000 baud. The Ranger module powers up and says on it's display that there is "No Handset". I have gone into the Ranger WiFi and verified the baud etc.
In EdgeTx, after selecting the External RF and ensuring CRSF & Baud, how do I tell EdgeTx that I want MAVLink on the external Ranger Module? When I go to the Radio section of EdgeTx and select ExpressLRS, the radio just hangs and requires a power cycle to fix (it's using the latest released EdgeTx firmware). This menu area works correctly when the internal radio is selected.
Any ideas?
Thanks Neil.

crude holly Dec 3, 2024, 11:39 PM

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https://www.expresslrs.org/quick-start/transmitters/tx-prep/

Radio Preparation - ExpressLRS

Get your Radio Handset prepared for ExpressLRS with this setup guide.

mortal venture Dec 3, 2024, 11:43 PM

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Thanks for responding, I believe have done all of this already.

crude holly Dec 3, 2024, 11:43 PM

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Show your !externalRF settings

analog elbowBOT Dec 3, 2024, 11:43 PM

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The following image shows ideal settings for external RF

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https://www.expresslrs.org/assets/images/txprep-bw-externalRF.jpg

crude holly Dec 3, 2024, 11:44 PM

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Baud rate should be 5.25M for a Ranger external module, per the guide

mortal venture Dec 3, 2024, 11:47 PM

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I'v set to 5.25M but still "NO HANDSET" message.

crude holly Dec 3, 2024, 11:48 PM

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Show a screenshot as requested

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Are the module bay pins bent/broken?

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Also put the TX into WiFi mode and show a screenshot of the !webui like so:

analog elbowBOT Dec 3, 2024, 11:49 PM

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Connect to your transmitter's or receiver's WiFi network to access the web UI:

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Instructions: https://www.expresslrs.org/quick-start/webui/#how-to-get-to-the-web-ui

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https://cdn.discordapp.com/attachments/798006228450017290/1028561424768835645/TX_Module3.0.jpg

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https://cdn.discordapp.com/attachments/798006228450017290/1028561424517169183/RX_Module3.0.jpg

mortal venture Dec 3, 2024, 11:51 PM

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mortal venture Dec 3, 2024, 11:52 PM

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crude holly Also put the TX into WiFi mode and show a screenshot of the !webui like so:

No bent pins.

crude holly Dec 3, 2024, 11:52 PM

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And the External RF settings screenshot?

mortal venture Dec 3, 2024, 11:55 PM

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crude holly Dec 3, 2024, 11:56 PM

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Internal RF is set to off?

mortal venture Dec 3, 2024, 11:56 PM

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yes

crude holly Dec 3, 2024, 11:57 PM

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Try running the ELRS lua

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What does the ranger module show?

mortal venture Dec 3, 2024, 11:58 PM

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"NO HANDSET" then times out and display the web address screen info.

crude holly Dec 3, 2024, 11:58 PM

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If it goes into WiFi mode because of no handset, go to the webui and add hardware.html to the end of the URL and show a screenshot

mortal venture Dec 4, 2024, 12:03 AM

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Thanks V-22, that was the issue. The Rx & Tx pins were incorrect.