JD 395 cx-10

goebish wrote: Cool !
For photo, video and headless, I don't remember if you have a logic analyzer to provide spi captures from stock transmitter ?
Should be pretty easy to add once we figure out the flags.

H-m-m... You see, I am a programmer (head of cryptography/programming department in my company), but not engineer in electronics... Some soldering work for me - is something wild. My best achievements in soldering - are two modules for devo 7e and 10. Before this I soldered something when there was USSR on the map.

But really I have logic analyzer (it is so cheap - I could not miss it). But I really do not know what to do with it next. If you can give me some links to evaluate the complexity of this task - I will think about this. But now I have no idea - on which side I should take the tool.

goebish wrote: I'm a programmer too, embedded & electronics is just a (wonderful!) hobby

I can probably explain how to hook up the analyzer to the TX, but you might need a bit of experience with soldering wires on a SOIC IC legs. I'd recommend to have some training on a similarly sized chip on a scrap board, just solder thin wires to IC legs, it will probably be terrible at first but in less than one hour you'll be a pro ! (provided you've a decent soldering iron and 0.5mm solder wire)
If you're OK for the challenge start by posting a picture of the inside of the TX (pcb).

Ok, brother. Let's do it. But not today. Today I want to test CX-10A for blue pcb protocol, give some acceleration to my developers stuck on simplest problem with our own smartcard's protocol and drink beer after that.

Comrades, I tested cx-10a with CX10-Blue protocol on 7e.

Flips - working. Speed change - working. On high speed cx-10a really gone to headless. Anyway with devo it is still bad quad. Bad yaw rates, bad pitch rate. But it really do not related to devo... It is simply bad quad by itself.

Just loaded the code and did a quick test on my CX10 blue board. I need to tweak the model but it bound and flew 1st try. Excellent work, thanks!

goebish wrote:

vasiliy_gr wrote: Comrades, here is my report on DM007.
What is unresolved? Camera - photo and video. And headless mode.

Try this firmware (Devo10), it has a protocol named CX10Test with 2 extra protocol options, P13 & P14, try to set each one from 0 to 8 (combinations should have no importance) and check if one enable snapshot, video or headless then report. You don't need to restart/rebind or anything, just change the value and check if it does something.
www.dropbox.com/s/eh4p4pssv3cfu6d/Devo10_cx10test.dfu?dl=0

It was very successful approach... So the results are below.

P13 - is headless mode. Value 3 - it is on. Any other value - off.

P14 - camera. Value 2 stays for video on. Transition 1-2 and 3-2 makes video on. Transition 2-1 or 2-3 makes video off.

With photos I got a little bit confused result. Transition 3-4 makes snapshot. Transition 4-3 also makes snapshot. Any other transitions available (from i to i+1 or i-1) do not make snapshot. So it seems like value 4 should be set momentary, but I am not completely sure.

Tested. Everything is ok except ch7. It does nothing. It even do not stop recording if recording is on. By the way - video is turning on or off by momentary value splash (I used from -100 to +100).

goebish wrote: Ok, file updated, check if ch7 is working now.

Binary seems to be the same as previous version on the above link.

Tested. Ch7 now ok. So all the extra functions of DM007 are working now. But I found several new problems.

There is very strange behavior with flips channel. So I tried to find out if it is DM007 related or more common for all the cx-10 class. But this dfu can not work with my cx-10a at all! So I took my 7e with yesterday's version - and it works with cx-10a. So there is some problem in current test build with blue protocol.

And now about flips. The problem is the same for DM007 and CX-10A. To make a flip you need to raise ch6, move stick (quad makes flip), drop ch6. If you want to make second flip while ch6 is still up - it will not. If you want to momentary raise ch6, then drop it - quad will not do flip afterwards. So if using switch - every flip needs two movement of it. If using toggle trim - the same. If using momentary trim - it should be pressed and while pressing you need to move stick to make a flip. All the variants seems to be extremely uncomfortable.

No, the issue with 6x6 is not the same. It is also uncommon, but it can be easily adopted by any button as a trim in momentary mode (I use usually EXT button). In this case with 6x6 the sequence is - press (and release) the trim button then move stick. But for cx10 the sequence will be other - press and hold trim button, move stick, release trim button. That is much worse.

With CX-10 green protocol, I don't have any issue flipping.
It's different than v2x2 protocol, because every momentary switch of channel 6 only arms the quadcopter for one flip, but in fact I like it better.
I configured EXT button as Vasily for channel 6, push EXT button, release, and make the flip. If I configured in a switch, I need to turn on-off every time I want to make a flip.