Graupner MZ-24 as a platform for Deviation?

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04 May 2016 15:32 - 04 May 2016 15:37 #47743 by vlad_vy
What do you think about Graupner MZ-24 (MZ-18) as a platform for Deviation?

RF module has SPI bus to main board (photo and pinout attached), CC2500.

Pros:
USB firmware upgrade
SD card support
Color LCD touch screen 3.5" (480x320)
Sound (buzzer and voice, internal speaker or hear phones)
Probably Murata pots (not yet checked, same pots used at Futaba Tx, 1000000 cycles)
Quad bearings Gimbals
and so on
...

Cons: I don't know now, I will say when I get it.

Shop with good prices (Graupner MZ-24 with shipping about 329$):
www.aircraft-world.com/en/c954692-transmitters-systems
Attachments:
Last edit: 04 May 2016 15:37 by vlad_vy.

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04 May 2016 16:51 #47749 by magic_marty
Replied by magic_marty on topic Graupner MZ-24 as a platform for Deviation?
I think it's a great idea, Graupner is well known for high quality top notch transmitters...Plus it would be great to see Deviation branch out to another platform...

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04 May 2016 19:24 #47765 by victzh
Replied by victzh on topic Graupner MZ-24 as a platform for Deviation?
What MCU do they use?

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05 May 2016 04:56 - 05 May 2016 04:57 #47801 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
I will say all info about used chips (pots and so on) when I get it in my hands. Yesterday it shipped from Japan by EMS.
Last edit: 05 May 2016 04:57 by vlad_vy.

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10 May 2016 14:56 - 10 May 2016 14:58 #48168 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
I've got a transmitter Graupner MZ-24 in my hands.

First external impressions = very + very positive from any side, but:
1. First, it is the set without wall charger for 1S LiPo 4000mAh battery. Do not try charge battery by any wall power supply over "CHARGE" socket!!! Charge lead for external LiPo charger included.
2. Second, set has one receiver GR24L only.
3. Third, top left and right switches (S5 and S6, S7 and S8) are too close each other.
4. Two sliders on the back side placed not at optimal position, they placed too low for my taste (towards to the bottom side of transmitter).

From other side, sticks are very smooth, except throttle, it has slightly ratchet feeling. I think it can be adjusted.

Next impressions I will say when I fully charge included 1S 4000mAh battery.
Last edit: 10 May 2016 14:58 by vlad_vy.

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10 May 2016 16:00 - 10 May 2016 16:03 #48169 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
LCD is bright and I can easily to see display under direct sunlight (sunset time).

Sound from internal speaker is quite loud (default setting 3) with setting 4, with setting 5 it's more then enough.
Last edit: 10 May 2016 16:03 by vlad_vy.

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10 May 2016 18:06 #48170 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
From original firmware update it looks like Tx has at least 2.0Mb memory for firmware and 1.6Mb for voice.

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11 May 2016 09:18 - 11 May 2016 09:18 #48191 by ThomasC
Replied by ThomasC on topic Graupner MZ-24 as a platform for Deviation?
AFAIK "HoTT" hasn't been hacked yet, so you would lose HoTT-connectivity with DeviationTX, thus rendering your HoTT-rX useless. I personally, flying with a Graupner MX-20 (which uses less battery power because of the monochrome LCD), think this system is so great, that it would really be a loss. I truly doubt that HoTT functionality will ever be included in DeviationTX.

Just my 2 cent ;)

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Last edit: 11 May 2016 09:18 by ThomasC.

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11 May 2016 09:32 #48193 by midelic
Replied by midelic on topic Graupner MZ-24 as a platform for Deviation?
I would need to know which HOTT TX/RX has cc2500 installed.
I've seen so far HOTT rx with CC2510.

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11 May 2016 11:18 - 11 May 2016 12:37 #48195 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
I'm simply looking for a replacement for Devo transmitters with better functionality (sound, voice) and hardware. HoTT protocol and Rx don't bother me. It looks like at near future we can't use Devo transmitters (supported by Deviation), as they disappear.

What's about RF chip used at Graupner transmitters, it is unimportant. At least Graupner MZ-24 (MZ-18) use RF module with SPI bus, so we can use any RF module with SPI bus.
Last edit: 11 May 2016 12:37 by vlad_vy.

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11 May 2016 13:39 #48197 by PhracturedBlue
Replied by PhracturedBlue on topic Graupner MZ-24 as a platform for Deviation?
need to know the MCU. Where can I obtain a copy of the firmware? that may shed some light on it.

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11 May 2016 15:45 #48204 by PhracturedBlue
Replied by PhracturedBlue on topic Graupner MZ-24 as a platform for Deviation?
I found the firmware on their webpage and took a look.
Looks like it is ARM Cortex based. I'm going to guess it isn't STM32 though. I haven't given it more than 10 seconds worth of investigation, but it doesn't look like it is encrypted which (if true) means we could probably write our own. It is still possible that it is signed or otherwise secured to prevent custom firmware. If it is based off a Cortex MCU which has a data-sheet, and the firmware doesn't appear protected after further analysis, it looks like a good candidate.

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11 May 2016 16:11 #48205 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
I will try to disassemble Graupner MZ-24 and make photos at weekend. Probably after that we will know more about used chips.

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11 May 2016 17:30 #48215 by PhracturedBlue
Replied by PhracturedBlue on topic Graupner MZ-24 as a platform for Deviation?
A little more investigation, and I'll backtrack on my statements about the firmware. I initially thought I saw the vector table of a ARM Cortex in the top of the bin, but looking at it further this doesn't seem to be the case. i can't really make heads or tails of it right now.

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12 May 2016 06:14 - 12 May 2016 06:24 #48255 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
If you like to get original instructions how to flash firmware for Graupner Tx, Rx or other Graupner products, the best source is:

www.graupner.co.kr/downloads

For now I've successfully flashed latest firmware to MZ-24 (Tx) and GR-24L (Rx). The only trick is flashing sound (voice) files for MZ-24, you need to download sound pack manually from:

www.graupner.de/News/Fernsteuerung-mz-24-HoTT-12-Kanal-V1.041/

On the other hand, you can select what language voice to flash. Or you can select version of language voice file for Multikopters.
Last edit: 12 May 2016 06:24 by vlad_vy.

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12 May 2016 14:03 - 12 May 2016 15:10 #48273 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
Without deep disassembling, I haven't time for it.

WARNING, to open back cover you need also unscrew two top hex screws, not only six back cover screws.

MCU
ARM STM32F207IGT6

www2.st.com/content/st_com/en/products/m...2x7/stm32f207ig.html

MCU was painted by silver paint (it looks like big and thick "Z" letter), it takes about half a hour to wash this paint from MCU with different solvents. Best result with acetone, but still it takes about half a hour. Luckily I can wash this paint completely and read marking.
Last edit: 12 May 2016 15:10 by vlad_vy.

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12 May 2016 14:34 - 12 May 2016 14:34 #48277 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
Second chip I can see on the main board:

MX25L3206EZNI

MACRONIX
MX25L Series 3 V 32 Mb (x 1/x 2) 86 MHz Industrial Grade Serial Flash - WSON-8
Last edit: 12 May 2016 14:34 by vlad_vy.

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12 May 2016 14:48 - 12 May 2016 14:52 #48278 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
Guys, this is on the edge of my sight capabilities, it takes about half a hour to read chip marking with lens.

By the way, rear sliders really has Murata pots, I can't determine brand for stick pots.
Both stick are equal, with ratchet and smooth springs, both can be centered by screw. So, transmitter can be used with multikopters with centered throttle stick.
Last edit: 12 May 2016 14:52 by vlad_vy.

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12 May 2016 15:08 #48280 by Fernandez
Replied by Fernandez on topic Graupner MZ-24 as a platform for Deviation?
I doubt that it will get many followers, as it a pretty pricy Tx.......When buying expensive unit, people expect to be a good tx out of the box, not want to do modding.........
Personally for same money I would go for something like this; www.frsky-rc.com/product/pro.php?pro_id=144


A nice cheap contender to be deviatied would be the FS-i10, but it is doubtfull if this will be even possible...................
According this topic has a 264MHz 32 bit ARM with 8MB SD RAM.
openrcforums.com/forum/viewtopic.php?f=5...af7a&start=30#p93730

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12 May 2016 15:11 #48281 by vlad_vy
Replied by vlad_vy on topic Graupner MZ-24 as a platform for Deviation?
Why not, if it has SPI bus inside. Frsky Taranis has not SPI bus.

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