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JJRC H8C Config

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26 Jul 2015 02:32 - 26 Jul 2015 06:05 #36003 by bd350
JJRC H8C Config was created by bd350
I just finished installing the NRF module in my Devo 7E. I have tried so many model configs for my JJRC H8C that I've lost count. Everyone that I have tried corrupts my firmware and I have to format my TX to get it to work for my other models. I am running Deviation 4.0.1. Any help would be greatly appreciated.

Edit... It seems that my Devo 7E will go into a reboot loop whenever the V202 protocol is selected.
Last edit: 26 Jul 2015 06:05 by bd350.

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27 Jul 2015 00:25 #36104 by hexfet
Replied by hexfet on topic JJRC H8C Config
The rebooting might mean data can't be read from the nRF module. Check the MISO connection.

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27 Jul 2015 03:29 #36116 by bd350
Replied by bd350 on topic JJRC H8C Config
The MISO connection for the NRF module is soldered directly to the MISO connection of my A7105 module which works great. I loaded a config for a Syma x11 and the tx turned on and functioned properly. I don't have a model besides the H8C that uses the NRF module so I can't test it properly.

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27 Jul 2015 14:33 #36146 by hexfet
Replied by hexfet on topic JJRC H8C Config
Deviation uses a 3-wire SPI connection to the A7105. The MISO signal should not be connected to the A7105.

Made the same mistake myself when installing an A7105 module pulled from an X1 tx. The A7105 may have a 4-wire mode because the module had a MISO label on one pin.

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27 Jul 2015 14:53 #36150 by bd350
Replied by bd350 on topic JJRC H8C Config
This is how my two modules are soldered
Attachments:

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27 Jul 2015 15:10 #36152 by TomPeer
Replied by TomPeer on topic JJRC H8C Config
on these pictures both modules are wired to tms. this is not good. one of them should be wired to tck.

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27 Jul 2015 15:19 #36153 by bd350
Replied by bd350 on topic JJRC H8C Config
Sorry. I forgot to mention that. The nrf is soldered to the tck. And the vcc and ce are soldered to the hole directly above the one in the picture which I tested and provided around 3.7 volts.

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04 Aug 2015 15:55 #36546 by bd350
Replied by bd350 on topic JJRC H8C Config
Does anyone have a model config for the jjrc h8c that works with a Devo 7e??

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04 Aug 2015 16:46 #36552 by TomPeer
Replied by TomPeer on topic JJRC H8C Config
This one works for me. I Use a nightly built firmware.
HOLD 1 = Throttle hold
FMOD1 = Lights
SW B0-1-2 = ELE/AIL 100% - 80% - 60%
SW A1 = flip
Left Vertical Trim Up = Photo
Down = Video


File Attachment:

File Name: model29.ini
File Size:8 KB
Attachments:

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12 Aug 2015 01:17 #36816 by bd350
Replied by bd350 on topic JJRC H8C Config
I tried the model29 config and it didn't work. When I go into the tx to change models, when I hit ent on the model for the H8C it goes to a screen that says load and has a blank space below it, then after a few seconds it goes into the loop of turning on and off again.

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12 Aug 2015 12:06 #36826 by TomPeer
Replied by TomPeer on topic JJRC H8C Config
I don't have a clue why that is. Like i said it works fine on my 7E. I use the latest nightly, maybe you can try that.

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05 Oct 2015 15:45 #38440 by bd350
Replied by bd350 on topic JJRC H8C Config
I finally got it working, turns out the nrf module that I was using was malfunctioning. Ordered a new module and everything works great.

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