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Posted by farmertom | Aug 23, 2016 @ 10:20 AM | 3,129 Views
Putting this together in hopes it will help new Skyhunter pilots with a maiden flight, as mine did not go well.

1) Put some expo and limits to the control surfaces. I use 50% and 70%, 70% could be lowered to 60% OK. The SH has large control surfaces. Over controlling can be a problem if you let it.
2) Program a switch to give 20% up elevator for launch. Turn it off at 150 ft. and reduce power.
3) Double check for proper action on the control surfaces before launch.
4) Seriously consider a flight stabilizer like a Vector or Guardian and know how you set up and use them.
5) For the first flight use only one battery. Saves weight.
6) Don't fly a camera, could be costly.

More advice for launch:
1) I hold the SH fuselage just before where it curves to the motor.
2) Make sure you have a good grip. Sometimes I wet my fingers to get more grip.
3) I use what I call a Javelin throwing motion. Kind of a stiff arm throw.
4) Throw the SH "UP and OUT" at about a 30 degree angle. The throwing motion should get you some altitude.
5) Practice the throwing motion with a SH in hand to get a good feel for the motion. A bad throw can be disastrous.
6) As you throw the SH apply full throttle. I have my radio in my left hand holding it on the left side. I use my thumb to apply the throttle.
7) Follow through with the throw to get your hand/arm out of the propeller's way.

If all goes well you should see your SH climb out very nicely. It gives me a good feeling to see this, considering some of my earlier launches. As the SH gets over the trees I reduce throttle some and turn off the elevator switch. Forgetting to turn off the elevator switch can be very bad. I have lost two because of that. I now have an alarm set when the elevator switch is on.
Good luck!
Posted by farmertom | Dec 31, 2015 @ 04:03 PM | 4,819 Views
This is how I installed a 6 position switch on my Turnigy 9XR Pro radio. It took a little digging to get this done so I thought I would post this to help someone else.

I decided to replace my Throttle Cut Switch with a 6 position switch and put LED indicators in the handle of the radio. With this radio I can now get visual and audio conformation of which flight mode I am in. This is nice for Pixhawk users.

I have never used the TC switch and thought it would be a good use of it.

I purchase the 6 position switch, variable resistors and LEDs with voltage dropping resistors from eBay.

This installation will use the new 6 position switch firmware, r218g. The wiring of the switch and LEDs will be the same for other radios but how you configure it will be different.

So take the battery out, remove the back, unscrew the area that holds the two switches, and remove the TC switch. The purple wire on it will be reuses so be gentle with it and leave as much as possible when you cut it. Cut the Black wire and put some heat shrink on the part that goes to the Rud switch. A wiring diagram of the 9XR Pro radio is here

You will want to remove the TC switch wire at J3 pin 8 and move it to J3 pin 2. Look at the pictures and the wiring diagram and it will make sense. Lift the little plastic flap/retainer on the connector to remove the wire. Push the wire into the new position and make sure it goes all the way and the...Continue Reading
Posted by farmertom | Aug 20, 2015 @ 11:26 AM | 3,651 Views
This is the way I put together a repeater for my Dragon Link Transmitter using a FrSky XJT transmitter module and a FrSky X8R receiver. The reason for using the FrSky is that I can use all 12 channels of the DL. My Radio is a Turnigy 9XR pro. Originally I was using the FrSky DJT and D8R modules with only gave me 8 channels.

I use a 3s battery and power the DL tx . I split off the 12V to a BEC to provide 5V power to the FrSKy rx. The SBUS out of the rx is routed to a FrSky SBUSS to CPPM converter. The output of the converter signal wire is routed to the 12 V connector to the DL. The output power and ground wire of the converter is cut and heat shrink tubing is applied to prevent shorting.

A jumper is added to the SBUSS to CPPM converter to output twelve channels.

You need to configure the DL receiver to accept 12 channels and re-bind the DL tx and rx.

With My Vector flight controller I set the control surfaces to the upper channels, 9-12. I can then use the lower PWM channels on the DL rx to control cameras, switches, etc.

Thanks to Noircogi for helping me out on this.
Posted by farmertom | Aug 09, 2015 @ 04:19 PM | 5,197 Views
OK guys, This is how I make voices for my 9XR Pro radio. Thought I would document how I did it as someone else is probably trying to do it also.

My disclaimer is that I am not an expert on any of this. If I am missing something let me know. This is just the way I did it and I am sure it will change.

I just upgraded to Windows 10 on a 64 bit machine. I had to download the newest RealTek audio drivers Version R2.79. It was a pain, but I got it done.

Next thing is to download and install Audacity from Sourceforge

Next is to find the website That is were the free voices will be created. They will stream to you and with Audacity you will record the voice. Then you can tweak the voice to your liking.

First a few comments on creating the voices. There are many voices to choose from. I like the Karen voice. The voice on the website will only speak 300 characters at a time, so you can't do the entire list of phrases to say. I split it up to 13 text files. Double space between phrases to give some silence between phrases. Space out abbreivations i.e. RSSI should be R S S I. She will say the letters and not try to make a word of it. Commas will give a slight pause. Some times the voice seems to want to talk fast. I open the text file copy and paste the text into the website textbox and click listen. It will take about 3 seconds for it to start to talk. I have attached my voice text files to make it easy on you.

Next is getting...Continue Reading