openrcforums

Hey guys, I upgraded to nightly and I'm enjoying the new changes :) The only thing I've noticed is I can't get my custom sounds to show up in the Special Functions -> Play Track selection menu, only the default ones are there. I could get them in the old openTX, and I can still see them and play th...

Hey guys, I upgraded to nightly and I'm enjoying the new changes :) The only thing I've noticed is I can't get my custom sounds to show up in the Special Functions -> Play Track selection menu, only the default ones are there. I could get them in the old openTX, and I can still see them and play the...

sgofferj, you may be experiencing a problem that was found in 3.0. it should be fixed in 3.1.

Hi there, I searched but didn't see anything. In tracking down a problem with a radio module I scoped the PPM output from my 9X. When 300uS pulse length is selected, the first pulse length is actually shorter, about 230uS. So when switching between + and - modes a radio module using falling edge det...

mod for fpv, haven't seen anyone do this before. very straightforward. headtracker is the dennis frie design. just two parts from goodluckbuy and a button and cable. http://www.rcgroups.com/forums/showthread.php?t=1677559 http://www.goodluckbuy.com/funduino-nano-3-0-328-mini-version-of-the-controlle...

MikeB, do you mind posting your compiled 9x file, my make stopped working (windows argh) and I want to put on working firmware so I know it's wired correctly.

edit, never mind I got it working, your firmware works for the switches, now to hook up Frsky.

edit again, telemetry works!

gohsthb wrote: For everyone:
I got avrdude to program this part. Attached is the working section that needs to be appended to avrdude.conf. I'm not sure where this file is on windows, on my Ubuntu system it is at /etc/avrdude.conf

-Gohst

That worked perfectly on my hobbyking usbasp, thank you!

Ghosthb, I'm using Windows. I have Atmel Studio 6 but I don't know if it works with usbasp. I'm looking into using the Arduino as the programmer. I was using the avrdude.conf entry as posted by s_mack in the RCG thread.

What are you guys using to flash? I only have the crappy hobbyking usbasp, with old firmware so I can't set the sck period, so avrdude fails to verify. I have an arduino somewhere I might try out

Spec sheet says 4-6mA at 8MHz, and hints that 1MHz mode is for low voltage applications i.e. 1.5v. Mine arrived today but I'm too busy crashing planes To set 8mhz: CCP = 0xD8; CLKPR = 0x00; then UBBR becomes 51, the above code and that number are right from the spec sheet (in case i'm wrong)

Also, ghosthb, it appears that you are not saving the first start/stop byte, the er9x code discards it but as you are forwarding data you need to keep it. Like this case frskyDataIdle: if (data == START_STOP) { numPktBytes = 0; frskyRxBuffer[numPktBytes++] = data; dataState = frskyDataStart; } break...

My concern about ThrCt is we are now transferring important data by serial instead of having the processor poll a pin, so there a chance a single misread bit may allow a switch status to be toggled, so I might add a simple parity to make sure that incorrect values have less chance to be used. I use ...

I see, with a smaller packet just for the switch data. I guess we need to decide now, where frsky data processing is to happen, in er9x or on telemetrez. if it is moved to telemetrez, there is some redundancy introduced, now we have two protocols, two decoders, would code space really be saved on er...

gohsthb, I see you also reused frsky code to collect bytes :) Initially I was sending switch data to 9x very quickly, but I slowed down to around ~8Hz because the link is 9600 baud... 11*8 = 88 bits per frsky packet, and (1/20ms) 50Hz = 4400 bits per second of switch data, leaving only half the conn...

I considered using a separate non-frsky telemetry protocol but the er9x code is approaching atmega64's limit as it is, and using new frsky packets to transfer switch / any other data reduces code on that end. For now, just transfering switch data shouldn't need byte stuffing.

There is some egg on my face, I didn't know there was already a thread. I posted in the other one, but should this one stay open to carry proposed changes to er9x?

Hi I just found out this thread existed, I wrote some telemetrez code and modified er9x. https://code.google.com/p/smartieparts-telemetry/source/browse/ in frsky.cpp, two new global variables and a define: #define SWITCHPKT 0x70 uint8_t SWPKT_AileDR = 0, SWPKT_ThrCt = 0; And an addition to the switc...

If you didn't catch it on RCG, SmartieParts is developing an interface board to go between a FrSky module and the 9x, so there is no need to do difficult SMD soldering in order to get telemetry on the 9x. The board is based around a level shifter and an Attiny1634 which should pack enough punch. The...

Ah, new replies, thanks for the additional information, let me know if this is what you mean. http://openrcforums.com/forum/download/file.php?id=1173&mode=view oiseau, thank you for putting this thread together! I used your schematic from Ghost in my trainer cable and it works! I didn't have tw...

I got my hands on the dx5e... plug and play! except that the channel order is TAER, almost cost me a finger!

Yes, thank you, but that's not what I was asking. I was wondering where on the backboard the collector is connected to. Apparently +5v is available. I haven't had a look at the 9x backboard yet, really I've only opened the transmitter to solder on the flasher. Also where the PPM-in line should be co...

Gohst, can you post a picture of where to solder the collector of the NPN? Does the emitter go to the PPM-in pin?

Wouldn't this circuit block the ability to use the 9x in student mode?

ShowMaster wrote:What if the Spektrum is the trainer/slave and the 9x er9x is the master? Not so easy?
SM

From what I understand from other threads in this forum is that Spektrum puts out a 1.5v signal which is too weak to be understood by the 9x processor without additional circuitry.

Crucial, thanks for the reassurance. Kilrah, I didn't know that, it seems to work. Thank you!

Hi, I have some questions about putting my 9x in student mode. -Flysky 9x slave, er9x, HK backlight -Spektrum dx5e master -mono headphone cable, original Spektrum I don't have the Spektrum box yet, but I would like everything to "just work" when we get to the field. I read that this setup ...