openrcforums

5.2"...
One of those useless things that are too big to be a convenient phone and too small to be a good tablet

r766 of er9x broke compatibility with the simulator, so until a solution is found r762 will stay in C9X.

open9x is more in sync, you'll get the latest revision that was released at the time of C9X compiling (C9X 0.88 went out on July 10th, with open9x r1100)

AFAIK to range test you're supposed to hold and maintain the button on the module for all the duration of the test. That doesn't seem very documented though, that's all I found the other day after a rather long search.

Yup indeed, looks like I've use 47 Ohm resistors by mistake on my equipment...

It shouldn't matter much though. I took the 470 Ohm from the existing mod documents, apparently chose the wrong resistors, and well, it works perfectly, so...

There are some times, like this one, in which I wonder why to waste CPU cycles in antiviruses... :) I stopped wasting mine with them long ago, probably 3-4 years. At the start only on my laptop as it was struggling a bit with the overhead, but seeing I had no problems after several months I removed...

Depending on RF circuit design, an antenna output can look open or "short-circuited", that won't mean anything. A direct current short circuit can be perfectly open at radio frequencies. By the way one should never measure an antenna port with a continuity tester. In addition to giving no ...

but disconnecting the old one so that all the pads on the board will be in good condition may be difficult If you have to keep the chip intact it is indeed. However if you can ruin the chip (as is the case here) it's simple. Just run a sharp cutter along the edges of the chip, in order to cut all t...

Projects like this are about people giving their time for free to make something great. As that time is not unlimited, choices have to be made to use it wisely on features that most people will find a use for. So obviously compromises will have to be made. Is it worth spending a dozen of hours on so...

You still haven't mentioned if you were using the original 9x firmware or if you have reflashed it. I think you need to go and read a heli setup tutorial (not necessarily involving a 9x) so that you have a general idea of the many mechanical and software adjustments that have to be made. I unfortuna...

Rob Thomson wrote:Can the stock firmware even change modes?

Yep it can! That's one of the very few things I know about the stock fw

Rob Thomson wrote:I see.... And actually; I think it does what you want already

I think he wants spoken altitude. That isn't available on open9x for stock board at this point...

Nothing my adblock won't eat

They're of use for multicopters, OSD's, autopilots and the like. CPPM = all servo channels on one pin, RSSI = receiver's radio signal level indication.

If you don't know what they are you probably don't need them

OK. Then maybe the radio sends no PPM anymore and the RX won't bind properly without it - but I don't have experience with the stock module, so someone who knows it might be of more help.

Do you have access to an oscilloscope?

There is so much optimisation required to fit all the functionality that, well... if that function never gets called with negative values, then there's no need to ensure it works with them. And checking the value is positive at entry time would be a waste of memory too. Maybe a comment saying "...

Binding is something that is only between the transmitter module and the receiver, the radio firmware plays no role at all in that matter. So if you can't get them to bind, there might be something wrong with the TX module. Do you have control of the servos after a successful bind?

jhsa wrote:You can flash the D8R-ll plus with the XP firmware anyway

Well you could if they had published it, but they haven't

Are you sure you never wired anything wrong when you did the different mods? If you for example did a short, or wired something wrong even temporarily it could have fried the processor's input ports causing unpredictable mess... Just trying to make sure you don't have a wiring mistake somewhere, and...

Of course the original firmware's eeprom can't be read. You didn't mention that was what you were trying to do though

Are you sure all the connectors on the board are connected correctly, not swapped/shifted?

Kilrah wrote:Did you try going in device manager, right clicking on the usbasp, choosing update driver, then choosing the folder where you extracted the above .zip?

AFAIK the driver is unsigned, so some versions of Windows won't accept it unless you install it manually that way.

2s lipo, 3s life, 3s lipo will all work perfectly well. Just that the extra energy your 3s lipo holds vs a 2s one will be useless (lost in heat). No risk of damage though.

they told me to send it back, but I HAD TO PAY FOR THE RETURN SHIPPING, and it had to be with a tracking number!!! Has anyone else had this experience with HK? It leaves me with a bad taste in my mouth - I don't want to bad mouth HK, but this policy really sucks, especially for a brand new device w...

As the helicommand does the mixing itself, you must NOT use any of the heli features on the 9x. Connect your helicommand to the receiver with the default channel numbers: hc.png - Create a new, simple default model, and check the first 4 lines on the mixer screen are AIL, ELE, THR, RUD to match that...

I want to have the ER9X firmware and the DSM2 mod. I don't need the original protocol. As long as I can use 8 channels, I am okay. How much do you want to do it? The popular DSM mod using the modules from cheap transmitters (DX4/DX5) only supports 6 channels. For 8 you'll have to go with the DM9 Sp...

Maybe look into this?
http://www.rcgroups.com/forums/showthread.php?t=1341590

I thought he meant "how to program the models" rahter than the actual software coding...

As long as you install the resistors as mentioned in the tutorials you'll be OK.

And you even get 4 for that price! Unless one is dead too of course

There were talks about possibly group ordering some a week or 2 ago, but I've lost track of the post and haven't heard of it again?

What revision of er9x? If it's more recent than eePe you might have that issue (as the error message suggests).