Espritmodel.com Telemetry Radio
rcstringfellow's blog
Posted by rcstringfellow | Mar 20, 2014 @ 12:25 PM | 1,867 Views
My word! It's been more than a year since my last post. Time flies .

RC never really leaves my mind but alas there are only so many hours in a day.

The last couple of days I got around to a long cherished wish: to haptic the shizzle out of my 9x (v2 er9X)! I had a broken iphone 3gs lying around and I figured that the motor could be used for the haptic mod. The speaker as well probably but not yet. For the moment I wired a piezo beeper but it sounds quite soft. I checked the forums for the cause but it seems it could be the quality of the beeper. I'll try and wire the iphone 3gs speaker this weekend as well as the backlight with transistor mod as shown here: http://openrcforums.com/forum/viewto...ight&start=150
post by greepo (page 6).

pics.

Cheers,

Michiel
Posted by rcstringfellow | Jan 31, 2013 @ 09:44 AM | 1,906 Views
I did the rcmodelreviews battery mod a while back and have been very happy with it. I tweaked it a bit because I did not want de desolder the cables each time I wanted to recharge the Li-ion trustfire 2400mAh 3,7V batteries.
Pictures for details.

I now have a home made 2s Li-Ion pack 2400mAh with a deans connector and a balancing lead!

Posted by rcstringfellow | Jan 06, 2013 @ 10:05 AM | 3,072 Views
It has been done by several.

I used it to bind to my MCPX. Succesfully.

Before you start read the excellent Wiki9x here:
http://9xforums.com/wiki/index.php/H...e_DSM_protocol

If you want to do it I strongly suggest you read the Hacksmods page about it here: http://www.hacksmods.com/2012/07/hp6dsm-module-wired-up

And also Pat Mackenzie's schematic:
http://www.rcgroups.com/forums/showp...ostcount=13821

My 9x is running on er9x and uses a LiFe 2400mAh trustfire battery mod to supply 2x3.7V as described here, but without the resistor (because you can program er9x to accept a lower threshold for the voltage alarm):
http://www.rcmodelreviews.com/tendollarbattery.shtml

To simplify the bind proces do this (thanks RPerkins):
1. Enter the menu setting by pressing the + button a few seconds
2. 13th option is "flash screen". Turn that to OFF.
After that I had no more binding issues with my MCPX.
http://9xforums.com/forum/viewtopic.php?f=35&t=1606

Stuff you need:
A DX4e for:
1. the DX5e module,
2. the Voltage regulator which is a AZ1117 Series 3.3V 1A Low Dropout Linear Regulator in a SOT-223 package. Thanks to Mbanzi.
(this is the datasheet http://pdf1.alldatasheet.com/datashe...MI/AZ1117.html) on page 2 it shows the types of pins, and on page 6 it mentions the recomended Vin max: 15V and absolute max 20V, and an optimum of <10V.
and/or a UBEC (I used a hobbywing 3A switchable 5-6Vout UBEC)
3. the wires
4. and one mini toggle switch (...Continue Reading
Posted by rcstringfellow | Jul 23, 2012 @ 01:24 AM | 2,792 Views
The V911 thread is massive! And as it should. In my opinion it is a very good value for money little Corter.
(Also I kind of like the Chinglish: "..to fly in the wind wheather...", do not fly on persons head, etc.)

However.

When you have flown the 270 by nine eagles some little things about the V911 started to bug me. This is not meant to be a tribute to nine eagles in any way but more of a general consideration kind of thing. And as it is my blog I can say what I want to say.
Yesterday I flew 6 packs outside in the park. It was a beautiful evening. No wind and a cloudless sky. A lot of mozzies as well though .
My V911 is the following: stock expect for MSR style plugs soldered to the board, solo 210a skids, 160mAh mini aviation batteries (4,8gr).
Weight w/o battery: 29,2 gr

My KLM SP270/V911: SP270 frame and head setup, solopro 260a skids, MSR style plugs soldered to the board, V911 Rx board, miniaviation 160 mAh battery (4,8gr), KLM colors painted on the canopy.
weight w/o battery: 29,4 gr

My Easyjet copter SP270/260a: SP270 frame and head setup, solopro 260a skids, MSR style plugs soldered to the board, solo pro 260a Rx board, easy jet spray painted canopy and white sprayed main blades.
weight w/o battery: 26,6 gr

The V911 is way more wobbly and it behaves like a pendulum whenever you let go of forward elevator. The climbout is much better than the KLM 270.

(to be continued)
Posted by rcstringfellow | Jun 25, 2012 @ 04:37 AM | 3,357 Views
To whom it may concern,

Let's start with some pictures.

The goal is:
Flying my Nine eagles 210a Free spirit green chili MIA style soon to be upgraded to draco main frame and motors heli with the Turnigy 9x

Flying my Nine eagles solo pro 270/V911 rx hybrids with the same turnigy 9x (already happenin')

Flying my Nine eagles soon to be purchased Solo pro 270 BNF stock with the Turnigy 9x.

(currently I am using a Turnigy 9x Tx v2 using basic unmodded firmware)