JJRC H20 Hex Quad

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07 Dec 2016 15:25 - 08 Dec 2016 02:38 #56621 by wasp09
Replied by wasp09 on topic JJRC H20H ??
That makes sense.

BTW, I figured out why I could not find the original cables for the Saleaelogic. I used them on my tilted quad for connecting a KK2.1. :) I should be using iNav with nRF24L01 and then recover the cables. Anyway 1 of the 4 ESCs was bad. I am still waiting for the replacement. That would be another project waiting in line.

Thanks.
Last edit: 08 Dec 2016 02:38 by wasp09.

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08 Dec 2016 05:17 - 08 Dec 2016 05:25 #56649 by wasp09
Replied by wasp09 on topic JJRC H20H ??
H20H capture:

www.dropbox.com/sh/egdjv05yja6gzmy/AABSM...RSw2sQdKVEX-Ooa?dl=0

The stock TX does quite a bit. It beeps or flashes on everything except regular throttle/rudder/cyclic.

My H20H does not have a camera but the TX is capable of controlling one.

Please check and advise if they are OK before I unsolder those wires, 3-wire SPI is a bit odd.

Thanks

BTW, txz is tar.xz
Last edit: 08 Dec 2016 05:25 by wasp09.

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08 Dec 2016 14:19 - 08 Dec 2016 14:20 #56665 by wasp09
Replied by wasp09 on topic JJRC H20 Hex Quad

goebish wrote: Thanks for testing !

That's a good question ....
It's even worse with some machines like the CX10, they change the protocol with every revision of the PCB :P


We probably have yet another one for H20H.

I also received a JJRC H36 (= Eachine E010) yesterday. It uses a battery with bigger plug. H20H battery has a smaller plug with reversed polarity. Looks like JJRC uses a different board designer for each model. :D
Last edit: 08 Dec 2016 14:20 by wasp09.

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08 Dec 2016 14:32 - 08 Dec 2016 15:05 #56666 by goebish
Replied by goebish on topic JJRC H20 Hex Quad
Thanks for the captures, at first glance it's pretty similar to the H8-3D / H20 protocol but with a few differences (only 2 freqs vs 4, different packet period, extra flags ...), shouldn't be very difficult to add it, it's on my list ;) ... and you can remove the wires.
Last edit: 08 Dec 2016 15:05 by goebish.

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08 Dec 2016 14:51 #56667 by SeByDocKy
Replied by SeByDocKy on topic JJRC H20 Hex Quad

goebish wrote: Thanks for the captures, at first glance it's pretty similar to the H8-3D / H20 protocol but with a few differences, shouldn't be very difficult to add it, it's on my list ;) ... and you can remove the wires.


Yes it's what I observed with the H20-mini.... It's binding the H8-3D, but no controls ...

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08 Dec 2016 14:59 #56668 by goebish
Replied by goebish on topic JJRC H20 Hex Quad
I think the H20 mini is using yet another protocol, not the same than H20H.

Do you have an H20H as well SeByDocKy ? TX id / channels is not the same than for H8-3D/H20, I need captures from more than 1 TX ...

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08 Dec 2016 16:16 #56670 by wasp09
Replied by wasp09 on topic JJRC H20 Hex Quad
Sorry I only have one H20H. Can't help.

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08 Dec 2016 18:29 #56675 by SeByDocKy
Replied by SeByDocKy on topic JJRC H20 Hex Quad

goebish wrote: I think the H20 mini is using yet another protocol, not the same than H20H.

Do you have an H20H as well SeByDocKy ? TX id / channels is not the same than for H8-3D/H20, I need captures from more than 1 TX ...



No I don't have the H20H :( .... I will try to capture data asap (when I will return from my buss trip)

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09 Dec 2016 15:08 #56707 by goebish
Replied by goebish on topic JJRC H20 Hex Quad
Ok, if the H20 mini binds I suppose the protocol is only missing an arm flag or something like that, I'm waiting for a capture.

For the H20H I need a capture from at least 1 other stock transmitter ...

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09 Dec 2016 16:53 #56719 by wasp09
Replied by wasp09 on topic JJRC H20 Hex Quad
Can we post the request for capture somewhere more open?

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10 Dec 2016 23:53 #56740 by goebish
Replied by goebish on topic JJRC H20 Hex Quad
Of course, you can ask in rcgroups if there's a dedicated thread for this machine.

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12 Dec 2016 14:51 #56749 by wasp09
Replied by wasp09 on topic JJRC H20 Hex Quad
I have, no responses so far.

It is strange that nobody have a H20H are able to capture.

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12 Dec 2016 14:52 #56750 by goebish
Replied by goebish on topic JJRC H20 Hex Quad
I've also asked in the multi module thread on rcg yesterday.

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13 Dec 2016 15:04 #56782 by eirikso
Replied by eirikso on topic JJRC H20 Hex Quad
I got my H20H today, but I am new to capturing. Ordered this now:
www.banggood.com/LHT00SU1-Virtual-Oscill...5.html?rmmds=myorder

....but backorder. So it won't be here in a couple of weeks.

The altitude hold works pretty well for such a small device. The controller is of the "Phantom type" with spring loaded throttle that defaults to 50%. A click on the throttle arms the H20H and a quick throttle-up launch the H20H automatically to around 150 cm altitude. Smacking it into the ceiling if you start from a table.

Left front button is toggle between beginner, intermediate and expert mode. Right button is auto flip.

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13 Dec 2016 15:10 #56784 by goebish
Replied by goebish on topic JJRC H20 Hex Quad
@eirikso, PM sent.

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13 Dec 2016 16:31 - 13 Dec 2016 16:38 #56791 by wasp09
Replied by wasp09 on topic JJRC H20 Hex Quad
Eirikso,

This cheap one would work:

www.ebay.ca/itm/24MHz-8-Channel-USB-Logi...6:g:qX4AAOSwYIxX3WQW

I could not shut down the H20H when it crashed into my curtain (not in a upright position). It looks like clicking and lowering the throttle stick would not turn off the motors. It just hang onto the curtain with motors running indefinitely until I turned off the stock TX. That is the one of the things I don't like, i.e. no emergency shut down.
Last edit: 13 Dec 2016 16:38 by wasp09.

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13 Dec 2016 16:34 - 13 Dec 2016 16:45 #56792 by goebish
Replied by goebish on topic JJRC H20 Hex Quad
Maybe it has an "emergency stop" switch ?
One of the protocols I added recently (JXD-506, with alt hold too) has one.
Last edit: 13 Dec 2016 16:45 by goebish.

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13 Dec 2016 16:40 #56793 by wasp09
Replied by wasp09 on topic JJRC H20 Hex Quad
Motors still run for a few seconds after turning off TX. It could be deadly on a bigger bird. Nice to have that emergency shut down.

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13 Dec 2016 16:41 #56794 by goebish
Replied by goebish on topic JJRC H20 Hex Quad
I've no idea if the H20H has one, you should check the documentation.

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13 Dec 2016 20:26 - 13 Dec 2016 20:29 #56803 by eirikso
Replied by eirikso on topic JJRC H20 Hex Quad

wasp09 wrote: Eirikso,

This cheap one would work:

www.ebay.ca/itm/24MHz-8-Channel-USB-Logi...6:g:qX4AAOSwYIxX3WQW

I could not shut down the H20H when it crashed into my curtain (not in a upright position). It looks like clicking and lowering the throttle stick would not turn off the motors. It just hang onto the curtain with motors running indefinitely until I turned off the stock TX. That is the one of the things I don't like, i.e. no emergency shut down.


Thank you. I have ordered one of those now.
Last edit: 13 Dec 2016 20:29 by eirikso.

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