Search found 748 matches

by SkyNorth
Tue Apr 10, 2018 12:04 pm
Forum: Turnigy 9XR PRO radio
Topic: 9XR-Pro Radios from HobbyKing on Sale
Replies: 29
Views: 3149

Re: 9XR-Pro Radios from HobbyKing on Sale

Here are the Schematics.

-Brent
by SkyNorth
Fri Apr 06, 2018 5:49 pm
Forum: Turnigy 9XR PRO radio
Topic: 9XR-Pro Radios from HobbyKing on Sale
Replies: 29
Views: 3149

Re: 9XR-Pro Radios from HobbyKing on Sale

The Current sense Shunt R9 (resistor) needed to be increased in size so it can handle more wattage.
or removed ( the current sensing was never very accurate) by removing it , it gives a extra A/D input which could have been used
for another Pot , or a few more switches...

-Brent
by SkyNorth
Wed Apr 04, 2018 7:47 pm
Forum: Turnigy 9XR PRO radio
Topic: 9XR-Pro Radios from HobbyKing on Sale
Replies: 29
Views: 3149

Re: 9XR-Pro Radios from HobbyKing on Sale

The Factory that makes the 9XR Pro had parts to build another 10,000 Pros...But HK does not want them. And it appears that they have now closed down that Mfg. company. There was talk about scraping the rest of the parts, I tried to convince them to donate the parts to some electronic schools , or Ma...
by SkyNorth
Fri Mar 23, 2018 12:54 pm
Forum: Turnigy 9XR PRO radio
Topic: 9XR-Pro Radios from HobbyKing on Sale
Replies: 29
Views: 3149

Re: 9XR-Pro Radios from HobbyKing on Sale

The 9XR-Pro has been discontinued by HK... $30 is the blowout price.

HK seems to have lost interest in a "Open" firmware product.
by SkyNorth
Tue Nov 14, 2017 5:27 pm
Forum: sky9x upgrade board
Topic: sky9x rev. B1 power issue
Replies: 67
Views: 3639

Re: sky9x rev. B1 power issue

Hi, The middle leg of the 3.3V regulator has to be soldered to pin2 AND the tab on the PCB pattern. It couldn't hurt to touch up these two spots with a soldering iron.... Also if the regulator / heatsink has been handled to much , you could have a hairline crack were the trace and pad meet. so you m...
by SkyNorth
Fri Jul 15, 2016 11:24 am
Forum: Hardware
Topic: 9xr Pro not power on problem.
Replies: 27
Views: 3160

Re: 9xr Pro not power on problem.

The board will work fine with out C79

C79 is a simple "bypass" capacitor, that sits across the 3.3V power lines.

How have you determined it is faulty?

-Brent
by SkyNorth
Thu Apr 07, 2016 9:03 pm
Forum: ersky9xr
Topic: Probably a FBKC fault
Replies: 42
Views: 3165

Re: Probably a FBKC fault

If you send HK a video of your USB connection issue , they may send you another radio...and let you keep your old one.
by SkyNorth
Tue Jan 26, 2016 9:03 pm
Forum: tgy9xr
Topic: 9xr LCD doesn't show digits - just blue light
Replies: 29
Views: 7164

Re: 9xr LCD doesn't show digits - just blue light

Hi,
R9 is a 0.1R current shunt. U1 is a "high side" current monitor ...that sits across R9

Just short out R9 and your good to go ... The mAH and unit current display will be incorrect ..but thats no big deal...

-Brent
by SkyNorth
Thu Dec 10, 2015 6:00 pm
Forum: 9Xtreme upgrade board
Topic: speaker hiss
Replies: 346
Views: 28236

Re: speaker hiss

FYI , you can make a Non-polar cap by using 2 of them in series ..attach the two positive leads together , and use the two minus leads for the connection .... The thing to remember is that capactiors used in series , will half the capacitance rating ... so to get 4.7uf , you would use two 10ufs in s...
by SkyNorth
Tue Dec 08, 2015 7:45 pm
Forum: Hardware
Topic: Realistic Joy Stick Flying
Replies: 94
Views: 7538

Re: Realistic Joy Stick Flying

Is yours going to look like this when finished ;-)
http://www.rcchinamade.com/fpv-uav-mach ... -case.html
by SkyNorth
Fri Dec 04, 2015 8:39 pm
Forum: Hardware
Topic: Realistic Joy Stick Flying
Replies: 94
Views: 7538

Re: Realistic Joy Stick Flying

Joao , I will send you 20K /10 turn trim pots .... you can dial up the output voltage you need.
by SkyNorth
Fri Dec 04, 2015 7:34 pm
Forum: Hardware
Topic: Realistic Joy Stick Flying
Replies: 94
Views: 7538

Re: Realistic Joy Stick Flying

I will send you two some LM324 Quad op-amps + a small piece of breadboard along with the co-proc these can be used to Buffer Kaos' 100K pots . and Joao can use them as buffered voltage divider to feed his 5V Hall output sensors into to get a 3V A/D level. I also have the JST connector shells and ter...
by SkyNorth
Fri Dec 04, 2015 12:34 pm
Forum: Hardware
Topic: Realistic Joy Stick Flying
Replies: 94
Views: 7538

Re: Realistic Joy Stick Flying

Hi I finally got the co-pro board Programmed..these little guys are sure fussy about the speed that you do it at..
Mike: I installed "T167Boot1.hex" Is this what they will need so that things can be done through the SD Bootloader ?
by SkyNorth
Mon Nov 30, 2015 6:26 pm
Forum: Hardware
Topic: Realistic Joy Stick Flying
Replies: 94
Views: 7538

Re: Realistic Joy Stick Flying

This might be worth a look...
https://github.com/Iezious/rcjoy/wiki
by SkyNorth
Sun Nov 29, 2015 2:47 pm
Forum: ersky9x
Topic: ERSKY9X Coding
Replies: 3999
Views: 279280

Re: ERSKY9X Coding

Yes , it uses I2C to interface, 3.3V supply. The RTC needs a backup battery to keep time..
or you could get 2 more I/O but not fitting the 32Khz crystal
This was how the Skyboard did the RTC ...
by SkyNorth
Sun Nov 29, 2015 1:45 pm
Forum: ersky9x
Topic: ERSKY9X Coding
Replies: 3999
Views: 279280

Re: ERSKY9X Coding

The extra signals were added to make the board house think that it was part of the main circuit. They wont make protos with more than one design on them...The design was tacked onto the RF PCB in the Pro. I then cut the circuit out of the board..... I will build up the boards for Joao and Kaos , Mik...
by SkyNorth
Sat Nov 28, 2015 8:37 pm
Forum: ersky9x
Topic: ERSKY9X Coding
Replies: 3999
Views: 279280

Re: ERSKY9X Coding

Joao I have a couple of these PCBs left over from the Pro design...I never built them up as we went with a RTC chip. It is the co-processor from the SKY design ...it can be used as a RTC / Analog / Switch input..it is 25mm x 25mm Want one to play with? I will install the SMT parts for you. copropic....
by SkyNorth
Sat Nov 28, 2015 8:21 pm
Forum: Hardware
Topic: Realistic Joy Stick Flying
Replies: 94
Views: 7538

Re: Realistic Joy Stick Flying

The pots need to act as a variable voltage divider. So the pot "sits" across the 3.3v supply , and the wiper is fed to a A/D input on the microprocessor. 5K to 10K pots are normal ..this provides enough current draw to provide a clean output on the wiper. You need to get some JST headers and make up...
by SkyNorth
Sun Nov 08, 2015 4:02 pm
Forum: 9Xtreme upgrade board
Topic: speaker hiss
Replies: 346
Views: 28236

Re: speaker hiss

Hi, here are some thoughts on the noise problem. I found some good info from some TI data sheets ...They are much better written than the ISSI one which is a obvious copy of this chip from TI. http://www.ti.com/lit/ds/symlink/tpa2005d1.pdf Another note I found: In applications which use a DAC to dri...
by SkyNorth
Tue Sep 22, 2015 5:38 pm
Forum: Turnigy 9XR PRO radio
Topic: 6 position switch ?
Replies: 7
Views: 1095

Re: 6 position switch ?

The 6 pos switch that FrSky sell for the Taranis has a small pcb attached with the resistors on it.
by SkyNorth
Wed Sep 16, 2015 12:48 pm
Forum: Turnigy 9XR PRO radio
Topic: Is it bricked? Never read about this before
Replies: 23
Views: 1707

Re: Is it bricked? Never read about this before

Yes the ARM chip can be changed ....do you have the skill/tools to do it?
It can be done with a Hot air removal tool , or using chipquick on the solder connections.

The user manuals explain how use the SAM-BA program to reload the software.
by SkyNorth
Tue Sep 15, 2015 11:55 am
Forum: Turnigy 9XR PRO radio
Topic: Is it bricked? Never read about this before
Replies: 23
Views: 1707

Re: Is it bricked? Never read about this before

I think you have damaged the ARM chip , By Hot plugging the RF module ...The module uses a direct battery connection , so say 12V ... when you Hot inserted it, the 12V and PPM pin connected BEFORE the Ground pin.
It is possible that you injected 12V into the 3.3V PPM output pin on the ARM chip.
by SkyNorth
Fri Sep 04, 2015 11:09 am
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 17950

Re: Arduino Due add on to 9X

The board is 93mm x 50mm
by SkyNorth
Thu Sep 03, 2015 1:27 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 17950

Re: Arduino Due add on to 9X

The other Core design I was working on , needed to many things to be added to use as a stand alone board.
This way it makes it easier for DIY'ers to connect and test their boards..the JST style wire harnesses are available on ebay for cheap..
-Brent
by SkyNorth
Wed Sep 02, 2015 9:00 pm
Forum: er9x
Topic: Arduino Due add on to 9X
Replies: 164
Views: 17950

Re: Arduino Due add on to 9X

I have been working on a different style of board.
This uses the same connections of the 9x.
Except it has 0.10" connections for the LCD and Menu keys

-Brent
by SkyNorth
Tue Aug 18, 2015 11:46 am
Forum: Hardware
Topic: Unbricking a T 9XR Pro
Replies: 4
Views: 770

Re: Unbricking a T 9XR Pro

Do you have a 9XR or a 9XR Pro?
The 9XR Pro ARM chip can be reset .. If you have a 9XR with a AVR chip , then this will not work.
by SkyNorth
Thu Jul 16, 2015 4:07 pm
Forum: Turnigy 9XR PRO radio
Topic: 9XR-PRO Hacks and Fixes
Replies: 233
Views: 56280

Re: 9XR-PRO Hacks and Fixes

The problem with using the voltage divider, is that the current available to drive the input of the A/D converter may be to low , and introduce noise. The A/D input has about 100K impedance , so this will "load" the voltage divider and cause errors. The OP-amp acts as a Buffer and increases the driv...
by SkyNorth
Thu Jul 16, 2015 3:21 pm
Forum: Turnigy 9XR PRO radio
Topic: 9XR-PRO Hacks and Fixes
Replies: 233
Views: 56280

Re: 9XR-PRO Hacks and Fixes

How strong is the signal from the Hall device? you may be able to drive a resistor divider (like the 3.3V 9x LCD does).
Or a small quad op-amp like a LM324 , could do the level conversion... and provide a nice drive signal to the A/D converter.

-Brent
by SkyNorth
Thu Jul 16, 2015 2:45 pm
Forum: Turnigy 9XR PRO radio
Topic: 9XR-PRO Hacks and Fixes
Replies: 233
Views: 56280

Re: 9XR-PRO Hacks and Fixes

I can also confirm that the Taranis gimbals which are adjustable for spring tension DO fit the 9XR Pro, and very easily, much easier than putting Aurora gimbals in the 9X case, no soldering or glue is required. I'll be posting some pictures and guidance in the next couple of days. Phil Looking forw...
by SkyNorth
Thu Jul 16, 2015 2:36 pm
Forum: Turnigy 9XR PRO radio
Topic: 9XR-PRO Hacks and Fixes
Replies: 233
Views: 56280

Re: 9XR-PRO Hacks and Fixes

HK has got the Pro sale for $70...
http://www.hobbyking.com/hobbyking/stor ... dule_.html

This is the price they should have sold it for!

-Brent

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