Try decoupling the power supply with a 10mf and a 10nf at the amplifier, that will probably work.
The low impedance output of the amplifier probably excludes pick-up between the amplifier and the speaker.
Search found 198 matches
- Mon Oct 26, 2015 9:43 am
- Forum: 9Xtreme upgrade board
- Topic: speaker hiss
- Replies: 346
- Views: 155585
- Sun Oct 25, 2015 3:10 pm
- Forum: 9Xtreme upgrade board
- Topic: speaker hiss
- Replies: 346
- Views: 155585
Re: 9Xtreme speaker hiss
Perhaps a signal diode in the pre-amplifier stage (as used in the original Dolby systems to give a noise gate for hiss) would work, is there a published circuit diagram?
- Mon Sep 14, 2015 10:28 am
- Forum: Turnigy 9XR PRO radio
- Topic: 3D printed battery spacer for 3s 2200mah battery
- Replies: 11
- Views: 7783
Re: 3D printed battery spacer for 3s 2200mah battery
Surely a piece of foam wrapped in tape would provide the same function for practically nothing nor any effort!
- Sun Aug 23, 2015 2:40 pm
- Forum: PROGRAMMERS
- Topic: Programming 9x with USBASP fails, works with Arduino
- Replies: 15
- Views: 18161
Re: Programming 9x with USBASP fails, works with Arduino
oops! :oops: Didn't read the question properly have just got a USBasp and used it for programming an autopilot and an on screen display. I had to load the drivers for windows 7 plus another library to make it work, got carried away my apologies. :roll: This might be more helpful: http://stackoverflo...
- Sun Aug 23, 2015 8:34 am
- Forum: PROGRAMMERS
- Topic: Programming 9x with USBASP fails, works with Arduino
- Replies: 15
- Views: 18161
Re: Programming 9x with USBASP fails, works with Arduino
Depending on your operating system you will need to load drivers an example of how to do this:
http://www.protostack.com/blog/2011/05/ ... vista-x64/
For other operating systems you may need other drivers.
http://www.protostack.com/blog/2011/05/ ... vista-x64/
For other operating systems you may need other drivers.
- Thu Aug 06, 2015 9:48 am
- Forum: Hardware
- Topic: alternative to FrUSB-3/FUC-3
- Replies: 15
- Views: 11032
Re: alternative to FrUSB-3/FUC-3
If you can't invert the output and input you could always use a 40106 hex inverter for less than a Euro.
- Wed Jul 08, 2015 8:12 am
- Forum: Hardware
- Topic: Old Frsky D8R brown out.
- Replies: 7
- Views: 6336
Re: Old Frsky D8R brown out.
A few things you might look at: Some of the resetting on power failure voltage glitches etc is done by a watchdog timer in the main microprocessor, if the shorting / brownout caused the microprocessor to jump into a loop where it is still resetting the watchdog there's a problem it doesn't know its ...
- Wed Jul 08, 2015 7:51 am
- Forum: The Pickled Gnu (The Pub)
- Topic: Unexplained link loss, any brand system?
- Replies: 8
- Views: 7048
Re: Unexplained link loss, any brand system?
Look for someone using 2.4GHz for video it uses a large part of the bandwidth that's why you can't feasibly use 2.4 GHz for video with 2.4 radio. Someone might be using 2.4 for video with an old 72 MHz set or a long range UHF, so look for that. If someone has massively boosted their 1.2GHz video thi...
- Mon Jul 06, 2015 10:58 am
- Forum: Hardware
- Topic: Taranis Gimals in a 9X
- Replies: 542
- Views: 273937
- Sat Jun 20, 2015 10:42 am
- Forum: other
- Topic: Turnigy 9x on Safle Flight Apprentice Rx
- Replies: 9
- Views: 12060
Re: Turnigy 9x on Safle Flight Apprentice Rx
It says it fits the Turnigy, and is DSM2 / DSMX , so yes. You will need to remove the existing module which has an aerial wire leaving from the back of it to the internal antennae (if its the version sold by hobbyking). You can just cut the wire if you don't intend to use the module.
- Fri Jun 19, 2015 2:43 pm
- Forum: Hardware
- Topic: HP llap top compatability
- Replies: 7
- Views: 5309
Re: HP llap top compatability
An unregulated power supply will float up to a higher voltage with no load.I had a plug power supply rated at 12vDC but for some reason I checked the voltage and it was 16Vdc. I did not check it under a load or use it.
- Fri Jun 19, 2015 2:31 pm
- Forum: other
- Topic: Turnigy 9x on Safle Flight Apprentice Rx
- Replies: 9
- Views: 12060
Re: Turnigy 9x on Safle Flight Apprentice Rx
To control this receiver you need a dsm2 dsmx transmitting module, the module in the stock 9x will not bind with it. You will need to get an orange Tx module or similar: http://hobbyking.com/hobbyking/store/__24656__OrangeRX_DSMX_DSM2_2_4Ghz_Transmitter_Module_JR_Turnigy_compatible_.html Sorry its n...
- Sat May 30, 2015 10:41 am
- Forum: Hardware
- Topic: If you had sound/voice... would you prefer speaker or buds?
- Replies: 50
- Views: 18700
Re: If you had sound/voice... would you prefer speaker or bu
You know you can get a jack plug that cuts off the speaker and transfers to headphones so why not just go with speaker and jack plug at no real extra expense.
- Sat May 30, 2015 10:37 am
- Forum: Where to buy / Spares / Modules? Selling up?
- Topic: GiantShark/GiantCod
- Replies: 11
- Views: 11046
Re: GiantShark/GiantCod
= PARASITE!tax money thirsty machine
- Mon May 18, 2015 12:44 pm
- Forum: Where to buy / Spares / Modules? Selling up?
- Topic: HobbyKing now offers 9x mainboards and LCDs as spare parts!
- Replies: 49
- Views: 29112
Re: HobbyKing now offers 9x mainboards and LCDs as spare par
It would be interesting to find out why it happens with some radios and not with otters :o What is different? João This is the difference:http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CCEQFjAA&url=http%3A%2F%2Fen.wikipedia.o...
- Mon May 18, 2015 8:54 am
- Forum: Where to buy / Spares / Modules? Selling up?
- Topic: HobbyKing now offers 9x mainboards and LCDs as spare parts!
- Replies: 49
- Views: 29112
Re: HobbyKing now offers 9x mainboards and LCDs as spare par
Hmmm... If they have Atmega128 right from the factory, these boards will likely suffer from the horizontal trims issue. So a Ground Fix mod must be done by the user as described in the wiki before using 9x radios with these new boards. Also read this thread: http://openrcforums.com/forum/viewtopic....
- Fri May 08, 2015 8:00 am
- Forum: The Pickled Gnu (The Pub)
- Topic: Basic safety recommendations
- Replies: 8
- Views: 7582
Re: Basic safety recommendations
I had a Brown flight simulator running in DOS which used to assess the cost of each crash, in tests I found that closing the throttle and pulling up elevator resulted in a series of stalls, the drop between each being less than a full on dive to the ground or straight line flight. The average crash ...
- Tue Mar 10, 2015 4:30 pm
- Forum: Hardware
- Topic: Taranis Gimals in a 9X
- Replies: 542
- Views: 273937
Re: Taranis Gimals in a 9X
"Any intelligent fool can make things bigger and more complex...It takes a touch of genius - and a lot of courage to move in the opposite direction." - Albert Einstein "The trouble with quotes on the internet is that it's difficult to verify their authenticity" -Abraham Lincoln....
- Sun Jan 25, 2015 9:58 am
- Forum: ersky9xr
- Topic: Ersky9xr for ground operation (Low level Throttle reverse)
- Replies: 26
- Views: 11862
Re: Ersky9xr for ground operation (Low level Throttle revers
Don't use the limits menu settings min and max but go to the end of the row find the three dotted lines and when over them press menu that will invert all channel operations for the individual model.
- Mon Jan 12, 2015 3:57 pm
- Forum: The Pickled Gnu (The Pub)
- Topic: Customs in Germany
- Replies: 36
- Views: 24522
Re: Customs in Germany
Welcome to the world of half witted semi-sentient morons or politician/bureaucrats it's the EU and its only going to get worse!
- Mon Dec 22, 2014 2:13 pm
- Forum: The Pickled Gnu (The Pub)
- Topic: New frsky transmitter
- Replies: 11
- Views: 8570
Re: New frsky transmitter
It doesn't need to be an arduino a single atmel or pic chip would do the job, the lack of battery however looks a bit suspicious, but with some pen cells or coin cells it's perfectly possible.
- Tue Dec 09, 2014 9:06 am
- Forum: Turnigy 9XR PRO radio
- Topic: 9XR PRO - better gimbals
- Replies: 100
- Views: 161614
Re: 9XR PRO - better gimbals
You would probably have better luck with epoxy that should hold on in low temperatures.The only problem is the cold weather that affects the glue and my problem returns.
- Thu Nov 27, 2014 11:18 am
- Forum: Hardware
- Topic: Taranis Gimals in a 9X
- Replies: 542
- Views: 273937
Re: Taranis Gimals in a 9X
If you have switched red and black wires it is possible you have damaged the amplifiers.since they will not work if I switch red and black wires
- Sat Nov 08, 2014 10:55 am
- Forum: Hardware
- Topic: TGY 9X LCD gibberish
- Replies: 17
- Views: 10478
Re: TGY 9X LCD gibberish
Sounds as though you should complain to hobbyking some people have got a new TX sent to them seems this problem is cropping up fairly frequently.
r2hobbies used to have a replacement lcd but that seems out of stock currently
r2hobbies used to have a replacement lcd but that seems out of stock currently
- Fri Nov 07, 2014 5:37 pm
- Forum: Hardware
- Topic: TGY 9X LCD gibberish
- Replies: 17
- Views: 10478
Re: TGY 9X LCD gibberish
Mmm the elephant in the room here is what happens if you disconnect the BASP from the tx circuit after programming maybe it is producing an unexpected current drain. In my TX's I have left a connector for the programmer built in and removed the programmer after use,because I wanted to use the progra...
- Fri Nov 07, 2014 5:30 pm
- Forum: Electronic Mods
- Topic: built-in USBasp 5V
- Replies: 18
- Views: 20114
Re: built-in USBasp 5V
Mmm the elephant in the room here is what happens if you disconnect the BASP from the tx circuit after programming maybe it is producing an unexpected current drain. In my TX's I have left a connector for the programmer built in and removed the programmer after use,because I wanted to use the progra...
- Fri Nov 07, 2014 12:55 pm
- Forum: Electronic Mods
- Topic: built-in USBasp 5V
- Replies: 18
- Views: 20114
Re: built-in USBasp 5V
One like this is a simple drop in saves a lot of space:
http://uk.rs-online.com/web/p/switching ... s/6664379/
http://uk.rs-online.com/web/p/switching ... s/6664379/
- Mon Oct 27, 2014 2:23 pm
- Forum: Hardware
- Topic: Analogue or digital servos?
- Replies: 4
- Views: 4444
Re: Analogue or digital servos?
Yes analogue are as good as digital unless you're a super aerobatic ace or helicopter 3D'er and better for power consumption as well, I've never found the need for servo's so fast and strong and power consuming!
- Mon Oct 27, 2014 9:40 am
- Forum: Hardware
- Topic: Analogue or digital servos?
- Replies: 4
- Views: 4444
Re: Analogue or digital servos?
See this old thread in Bruce Simpsons forum for an answer
http://rcmodelreviews.com/forum/viewtop ... 321#p10262
http://rcmodelreviews.com/forum/viewtop ... 321#p10262
- Fri Oct 24, 2014 8:30 am
- Forum: General Information & Rules
- Topic: FTDI Drivers
- Replies: 13
- Views: 14855
Re: FTDI Drivers
This is the link to the windows Utility get it before they change it!
http://www.ftdichip.com/Support/Utiliti ... .8.2.0.zip
http://www.ftdichip.com/Support/Utiliti ... .8.2.0.zip