Search found 108 matches
- Thu Apr 18, 2013 10:44 am
- Forum: openTx
- Topic: rotary encoder with Open9X?
- Replies: 54
- Views: 23909
Re: rotary encoder with Open9X?
thanks for confirmation. So I can break into the LCD lines, add 3k9 resistors and have the encoder functional on a totally stock board w/ stock ATmega64! Me thinks nice activity for the wknd...
- Wed Apr 17, 2013 2:44 am
- Forum: openTx
- Topic: rotary encoder with Open9X?
- Replies: 54
- Views: 23909
Re: rotary encoder with Open9X?
Hi Bertrand, I'm finally digging myself out of a massive career related hole which has severely impacted the fun stuff. As I'm resurfacing, I see there is an issue with Open9X (RAM constraint). Was wondering, before I hack my 9X to install the rotary encoder - is there still encoder support in lates...
- Wed Apr 17, 2013 2:40 am
- Forum: Other Electronic Projects
- Topic: IDE recommendations
- Replies: 3
- Views: 5637
Re: IDE recommendations
many thanks Bertrand. Have you experienced random crashing of Eclipse as noted here?
- Mon Apr 08, 2013 11:28 pm
- Forum: Other Electronic Projects
- Topic: IDE recommendations
- Replies: 3
- Views: 5637
IDE recommendations
For lack of a better place to put this question...moderators if it needs to move please feel free. I'm preparing to jump back into embedded software coding after a VERY long hiatus. Last time I did this, I had to shine light on my micro to erase all the firmware sins I had just committed in assembly...
- Tue Mar 19, 2013 6:13 pm
- Forum: Hardware Mods
- Topic: alternative to Sparkfun USB breakout
- Replies: 2
- Views: 3554
Re: alternative to Sparkfun USB breakout
oops, that's a miss! I included some links here for easy retrieval. This is the item from the original seller . Now comically it's listed for $103 each!!! Here's an ebay search for the same item from different sellers. Cheapest one today Mar19, 2013 is about $5. [EDIT] Here's an alternate board that...
- Tue Mar 19, 2013 5:47 pm
- Forum: Hardware Mods
- Topic: alternative to Sparkfun USB breakout
- Replies: 2
- Views: 3554
alternative to Sparkfun USB breakout
I discovered an alternative to Sparkfun's USB breakout board for providing a mini-B USB receptacle inside the battery tray of the 9x. Why? Because I'm cheap and stubborn. Sparkfun board is like $10 by the time you pay shipping (assuming this was all you ordered from them), I knew there was a cheaper...
- Sun Mar 17, 2013 5:34 pm
- Forum: General Information & Rules
- Topic: Forum Name Change
- Replies: 39
- Views: 25014
Re: Forum Name Change
for all those that forgots their password - I recommend "LastPass". One of the best freeware apps I've ever installed.
Re: Er9x128
yes, contrary to popular belief the risk of burning components is actually higher when using a lower tip temperature. It's because with a high tip temp, the solder melts almost instantly before the heat has a chance to flow into the component. With a low tip temperature you have to hold the tip ther...
- Wed Feb 13, 2013 6:13 am
- Forum: openTx
- Topic: rotary encoder with Open9X?
- Replies: 54
- Views: 23909
Re: rotary encoder with Open9X?
I'm running completely stock board without TeZ, and am a willing volunteer, but like Kaos will not be fast. I am very interested in this adaptation. Earliest I could realistically provide feedback is mid March, as I have parts on order and am currently on biz travel. Let me know if you'd like me to ...
- Tue Feb 12, 2013 4:47 am
- Forum: erskyTx (was ersky9x)
- Topic: Sky9x Rotary Encoder Option
- Replies: 442
- Views: 270093
Re: Sky9x Rotary Encoder Option
That sounds cool, do you have any pics? I don't have my backlight yet so am having a hard time visualizing how it's built...Iksbob wrote:I took about a quarter inch off mine with no ill effects
- Sun Feb 10, 2013 5:06 pm
- Forum: OpenXVario - an open source vario supported by the open source firmwares!!
- Topic: Introduction to the openx vario/altimeter
- Replies: 756
- Views: 307308
Re: Introduction to the openx vario/altimeter
Rainer, looks good and seems pretty responsive. Quick changes in vertical velocity come thru very fast, the filter appears to be working well getting rid of the noise and honing into the steady state value. Did you reduce the deadband window in the 9X for the youtube demo or is that the level of sen...
- Sat Feb 09, 2013 12:21 am
- Forum: OpenXVario - an open source vario supported by the open source firmwares!!
- Topic: openXvario development
- Replies: 251
- Views: 112901
Re: openxvario arduino based variometer/altimeter/hub for op
Rainer - nice! 8-) I'm glad I could help in some small way... Kalman filters are impressive beasts aren't they? I'm looking forward to reading how you've implemented that in code for such a small micro. It would be interesting to see time based traces of the moving average filter vs. Kalman output w...
- Fri Feb 08, 2013 11:01 pm
- Forum: openTx
- Topic: rotary encoder with Open9X?
- Replies: 54
- Views: 23909
Re: rotary encoder with Open9X?
Bertrand, I am a willing volunteer but I will be very slow. My encoder is on order and I'll be away from my radio on travels for a couple weeks. Probably won't be able to give feedback until mid or end of March.
haha, my soldering iron takes a long time to heat up I guess!
haha, my soldering iron takes a long time to heat up I guess!
- Fri Feb 08, 2013 5:56 pm
- Forum: openTx
- Topic: rotary encoder with Open9X?
- Replies: 54
- Views: 23909
Re: rotary encoder with Open9X?
I heard jhsa is an expert at soldering processor pins, maybe he'll open a fab/hack shop?
If it means having encoder and extra 3pos switch in Open9x - well... I'm warming up my soldering iron right now!
If it means having encoder and extra 3pos switch in Open9x - well... I'm warming up my soldering iron right now!
- Fri Feb 08, 2013 5:22 pm
- Forum: PROGRAMMERS
- Topic: betemcu.cn programmer schematic variations
- Replies: 16
- Views: 41816
Re: betemcu.cn programmer schematic variations
@rperkins good post. I had to read it a couple times as there's lotsa good info and tips in there. Yes, I think the issue with these programmers is the interaction between 9X board and programmer board. Seems the voltage levels and edge rise/fall times are marginal thus it works fine out of box for ...
- Fri Feb 08, 2013 4:57 pm
- Forum: The Pickled Gnu (The Pub)
- Topic: Was I dumb for buying a 9X vs XR or not waiting for X9D?
- Replies: 47
- Views: 21993
Re: Was I dumb for buying a 9X vs XR or not waiting for X9D?
Cool! so was a programmer issue and in fact you did the 128 mod perfectly the first time anyways! Good job brother!
Re: Er9x128
jhsa, I have a couple extra USBASP programmers ( read this ) - and as luck would have it I'm in Germany next week! Do you want me to bring one and put it in the post for you? I can give you one of my already modified ones with removed problematic 220ohm resistors. If you want it, PM me with your add...
- Fri Feb 08, 2013 4:38 pm
- Forum: openTx
- Topic: rotary encoder with Open9X?
- Replies: 54
- Views: 23909
Re: rotary encoder with Open9X?
yes, I suppose the encoder uses up 3 of LCD lines as inputs, so there are a few left over for some other fun stuff like your stick-switches, or perhaps another 3-way switch (hint, hint!) LCD lines cannot be polled so frequently but enough for some inputs...
- Fri Feb 08, 2013 4:34 pm
- Forum: The Pickled Gnu (The Pub)
- Topic: Was I dumb for buying a 9X vs XR or not waiting for X9D?
- Replies: 47
- Views: 21993
Re: Was I dumb for buying a 9X vs XR or not waiting for X9D?
@jhsa - so you did get the 128 working now? I've been dying to ask you but knew you had a cold so was giving you a break...
@kaos - Yes, power to the ARMS! I love that Brent is stewing some new goodies in that thread you linked.
@kaos - Yes, power to the ARMS! I love that Brent is stewing some new goodies in that thread you linked.
- Fri Feb 08, 2013 3:34 pm
- Forum: openTx
- Topic: rotary encoder with Open9X?
- Replies: 54
- Views: 23909
Re: rotary encoder with Open9X?
@bertrand, yes please enable it for stock board!
So you mean to say the FW already has capability to read the LCD lines as input? This is the functionality implemented in ER9X and I assume would need something identical in Open9X for encoder on stock board.
So you mean to say the FW already has capability to read the LCD lines as input? This is the functionality implemented in ER9X and I assume would need something identical in Open9X for encoder on stock board.
- Thu Feb 07, 2013 2:15 am
- Forum: Helicoptor Programming
- Topic: best practice rudder and gyro limit setup (EXI-450-SE)
- Replies: 27
- Views: 23946
Re: best practice rudder and gyro limit setup (EXI-450-SE)
Thanks for helping this noob along kaos! re: lazy susan, I had read that before so tried to give a lot of compliance by loosely attaching it with plenty of bubble wrap wrapped around skids. landing gear can move freely L/R/U/D about 3/4", yet heli could not get airborne. Heli spins up normally ...
- Wed Feb 06, 2013 9:40 pm
- Forum: Helicoptor Programming
- Topic: best practice rudder and gyro limit setup (EXI-450-SE)
- Replies: 27
- Views: 23946
Re: best practice rudder and gyro limit setup (EXI-450-SE)
a quick update. Impatiently I flew the 450 in the too-small space in the back yard with old worn out parts as mentioned above. Tail was wagging all over the place. Some gusts of wind were more than my skills could handle and heli below into hanging branches of trees. bent main shaft, broken main bla...
- Wed Feb 06, 2013 9:26 pm
- Forum: OpenXVario - an open source vario supported by the open source firmwares!!
- Topic: openXvario development
- Replies: 251
- Views: 112901
Re: openxvario arduino based variometer/altimeter/hub for op
@RightRudder - good discussion. Agreed a pitot would be a better option and math can do the rest. Yes, a dsp chip is much better suited to Kalman filters and complex IIR, but a simple IIR will likely give better performance than moving box average with very little computational overhead. Caveat - th...
- Wed Feb 06, 2013 9:16 pm
- Forum: The Pickled Gnu (The Pub)
- Topic: Was I dumb for buying a 9X vs XR or not waiting for X9D?
- Replies: 47
- Views: 21993
Re: Was I dumb for buying a 9X vs XR or not waiting for X9D?
+1 I hope the 9X never dies. By now the tooling will have been paid for so they can continue making those parts with better profit. The 9X let the Jeanie out of the bottle. True dat. If (HA!) / when I need another radio, X9D or X12D looks like it. Hard to justify HiTec or JR or Futaba when stuff as ...
- Wed Feb 06, 2013 7:48 pm
- Forum: OpenXVario - an open source vario supported by the open source firmwares!!
- Topic: openXvario development
- Replies: 251
- Views: 112901
Re: openxvario arduino based variometer/altimeter/hub for op
@RightRudder - good post. There are more than 1 way to filter data, a simple boxed moving average (i.e. FIR filter) is very easy to implement in code. We are dealing with a micro of limited computing power but there are other options like a Kalman filter or other IIR filters which can produce some e...
- Thu Jan 31, 2013 10:58 pm
- Forum: OpenXVario - an open source vario supported by the open source firmwares!!
- Topic: Introduction to the openx vario/altimeter
- Replies: 756
- Views: 307308
Re: openxvario arduino based variometer/altimeter/hub for op
Super cool project. Rainer, Bertrand you guys have worked some really cool majik here! Porting those analog ports thru Arduino to RS232 to FrSky telemetry is slick, possibilities are endless! Rainer, nice job commenting the code, it is perfectly understandable. Rob, I like your idea for true vario b...
- Wed Jan 30, 2013 7:47 pm
- Forum: erskyTx (was ersky9x)
- Topic: Sky9x Rotary Encoder Option
- Replies: 442
- Views: 270093
Re: Sky9x Rotary Encoder Option
FYI, Mouser has the same part. Last I checked they had black in stock but were out of white...
http://www.mouser.com/Search/ProductDet ... N-CB222LFS
http://www.mouser.com/Search/ProductDet ... N-CB222LFS
- Fri Jan 25, 2013 8:20 pm
- Forum: Soldering, Hardware, Skills
- Topic: Desoldering The Atmega Chip Using Chip Quik
- Replies: 105
- Views: 81607
Re: Desoldering The Atmega Chip Using Chip Quik
@mhotar - clever! Wondering; did you set up current controller on that bare copper wire? @jhsa - 250degC is probably too low to reach liquidus on the solder currently holding down your 128. You need to reach liquidus of both Sn-Bi (Chip Quick) solder and Sn-Pb (or SAC if lead free) so the Sn-Bi can ...
- Wed Jan 23, 2013 5:22 pm
- Forum: Hardware Mods
- Topic: RPM Sensor
- Replies: 21
- Views: 11856
Re: RPM Sensor
@Showmaster, Figure1 of this article from Digikey shows motor control timing chart for 3phase BLDC motor. They show a sensor motor design, but sensorless (typical RC motor) operates the same way. Only correction I would make to Figure1 is usually only one FET is PWM (either hi-side of low-side it do...
- Wed Jan 23, 2013 5:08 pm
- Forum: FRSky Telemetry Mods
- Topic: RPM sensor
- Replies: 14
- Views: 11914
Re: RPM sensor
michel49, i was thinking something similar. Why not pick up electrical pulses from one of the motor phases? Would eliminate magnets. Current sensor would probably work best. Might need a divide-by to calculate rotor speed based on motor magnetic pole arrangement and gear ratio, but sounds like MikeB...