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-   -   Radiomaster MT12 (https://www.rctech.net/forum/radio-electronics/1117667-radiomaster-mt12.html)

RC10Nick 04-04-2024 04:03 PM

I think the following ROAR rule is pretty clear in what is and isn't allowed:


Originally Posted by da rulz
8.2.3
The use of traction control sensing devices, active suspension devices, and steering control devices
aided by gyroscopes or accelerometers (G-force sensors) of any kind is strictly prohibited. Sensors
may be used for the purpose of passive data recording but not for adjusting the performance of the
vehicle while in motion.

I think this clause clearly draws the line at anything that uses a sensor to "adjust the performance of the vehicle while in motion." I think that's a pretty good line to draw - after all every other radio electronically alters the driver's input in some way - applying curves, delays, etc. - and the programmability built into ESCs is just as advanced. Our ESCs do a good portion of our braking for us with drag brake.

This radio might be new, but it still doesn't do anything that is outside the realm of what's been done before.

gigaplex 04-04-2024 04:57 PM


Originally Posted by RC10Nick (Post 16090977)
I think the following ROAR rule is pretty clear in what is and isn't allowed:



I think this clause clearly draws the line at anything that uses a sensor to "adjust the performance of the vehicle while in motion." I think that's a pretty good line to draw - after all every other radio electronically alters the driver's input in some way - applying curves, delays, etc. - and the programmability built into ESCs is just as advanced. Our ESCs do a good portion of our braking for us with drag brake.

This radio might be new, but it still doesn't do anything that is outside the realm of what's been done before.

Under ROAR you'd probably be fine but they're not the only regulatory body out there.

DirkW 04-04-2024 05:57 PM

Plus they could change that rule or create a new one.Given that they are these sinister people who always will do whatever they can against the poor people in this hobby (at least that's what quite a few people here on rctech would make you believe :lol:)

Chof 04-04-2024 07:16 PM


Originally Posted by RazorRC (Post 16090923)
BTW, to update, I just tried to run the .bin from the SD and it asked to confirm to Flash, is this the right way to upgrade? I honestly couldn't get the BuddyTX thing to work (no officially supported releases for the MT12), or the hold T1+T4 "center" method to work.

First of all, EdgeTX is made up of two programs: a bootloader and a radio firmware. What we usually use is radio firmware.
Neither the bootloader nor the radio firmware can rewrite itself. Therefore, the radio firmware is flashed (updated) on the bootloader. Similarly the bootloader is flashed on the radio firmware.

To start the bootloader, use the T1+T4 method, but for MT12, hold T1+T2 inward and press the power button.

As mentioned earlier, v2.10.0 has not been officially released yet. Therefore, in EdgeTX Buddy, it will not appear in the list unless you check "Include pre-releases" from the "Filters" drop-down list (the same goes for nightly).https://cimg1.ibsrv.net/gimg/www.rct...487365ffa8.png

amp3d 04-05-2024 07:58 AM


Originally Posted by Chof (Post 16076624)
EP1/EP2 compatible receivers can be used as internal TX modules(#1457).
There is an RF port connector on the MT12 main board, so just connect it here.https://cimg4.ibsrv.net/gimg/www.rct...72b3eedd81.jpg
It's easy to do. However, it is not possible to flash the firmware on the radio, so it must be removed when flashing.

1. Use EP1/EP2 compatible RX as internal TX module
2. Use WEB Flasher to UART flash "Generic ESP8285 Full-duplex 2.4GHz RX as TX" to RX
3. Connect RX to the RF port of MT12

RX_____RF port(MT12)
GND ---- - (minus)
+5v ---- +(plus)
TX ------ RX
RX ------ TX

A genuine internal ELRS module costs $55, but this method costs about $15 ($0 if you have a spare receiver).

Out of curiosity, have you had any temperature problems? Does the ELRS receiver get really hot when transmitting? Is it still working for ya?

Chof 04-05-2024 08:11 AM


Originally Posted by amp3d (Post 16091141)
Out of curiosity, have you had any temperature problems? Does the ELRS receiver get really hot when transmitting? Is it still working for ya?

There is no problem with heat. It is the same as when using it as a normal receiver.
I continue to use it even now.

amp3d 04-05-2024 10:07 AM


Originally Posted by Chof (Post 16076624)
EP1/EP2 compatible receivers can be used as internal TX modules(#1457).
There is an RF port connector on the MT12 main board, so just connect it here.https://cimg4.ibsrv.net/gimg/www.rct...72b3eedd81.jpg
It's easy to do. However, it is not possible to flash the firmware on the radio, so it must be removed when flashing.

1. Use EP1/EP2 compatible RX as internal TX module
2. Use WEB Flasher to UART flash "Generic ESP8285 Full-duplex 2.4GHz RX as TX" to RX
3. Connect RX to the RF port of MT12

RX_____RF port(MT12)
GND ---- - (minus)
+5v ---- +(plus)
TX ------ RX
RX ------ TX

A genuine internal ELRS module costs $55, but this method costs about $15 ($0 if you have a spare receiver).

Is there any way to use this ep2 connected to the external module bay headers? (So that the internal 4-in-1 can stay connected?
I have an EP2 ready to go for this, but I'd like to keep the 4-in-1 as well if possible :)

Chof 04-05-2024 05:30 PM


Originally Posted by amp3d (Post 16091181)
Is there any way to use this ep2 connected to the external module bay headers? (So that the internal 4-in-1 can stay connected?
I have an EP2 ready to go for this, but I'd like to keep the 4-in-1 as well if possible :)

No, it can only be used as an internal module.
I have never done it, but how about connecting both and switching the power line?
Or, pull the wires out of the case and reconnect the connectors.

Chof 04-05-2024 05:47 PM


Originally Posted by amp3d (Post 16091181)
Is there any way to use this ep2 connected to the external module bay headers? (So that the internal 4-in-1 can stay connected?
I have an EP2 ready to go for this, but I'd like to keep the 4-in-1 as well if possible :)

I just came up with something. Is it possible to modify the internal 4in1 module and use it as an external module?

amp3d 04-06-2024 07:27 AM


Originally Posted by Chof (Post 16091253)
No, it can only be used as an internal module.
I have never done it, but how about connecting both and switching the power line?
Or, pull the wires out of the case and reconnect the connectors.

I like this idea!

Perhaps I can use one of the switches that came with the radio.

I'll keep you posted on this!
This could be the ultimate mod making this a "5-in-1"

I have 2 radios so I don't mind trying this on one :)

amp3d 04-06-2024 08:20 AM


Originally Posted by Chof (Post 16091253)
No, it can only be used as an internal module.
I have never done it, but how about connecting both and switching the power line?
Or, pull the wires out of the case and reconnect the connectors.

In your photos, you are using the correct 5 pin JST connector to connect your EP2...may I ask what the connector name is so I can make sure I get the correct pin/pitch?
Is that a 5-pin jst-zh?

Chof 04-06-2024 08:39 AM


Originally Posted by amp3d (Post 16091364)
In your photos, you are using the correct 5 pin JST connector to connect your EP2...may I ask what the connector name is so I can make sure I get the correct pin/pitch?
Is that a 5-pin jst-zh?

The RF port connector is morex picoblade (1.25 pitch) 5 pin.
It seems that some shops call it JST.
https://cimg0.ibsrv.net/gimg/www.rct...3618d08a1a.png

amp3d 04-06-2024 09:30 AM

Last question for a while!

I recently updated my MT12 and have set the default models to use ST instead of TS.
Everything works good with that, however I've noticed that my "trim" mappings/labels are no longer correct.

Adjusting the ST trim actually moves the throttle, and changing the TH trim changes my steering.

I can't seem to find where those references are made in edgetx in order to correct it.

Any ideas?

RC10Nick 04-06-2024 10:26 AM

Perfect visibility even with the sun shining directly on the screen. The radio is worth it just for that alone.

https://i.imgur.com/0u3HJBR.jpeg

kstoracing1 04-06-2024 01:20 PM

I believe you may have to assign those switches in the settings aLeo. They won’t automatically switch, I believe.

just got mine but, from what I’m reading the switches, trims etc won’t automatically switch. Unless you change something in radio setting still learning my self.

amp3d


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