Posted by Shiva17 | Today @ 01:50 AM | 62 Views
Hello Everyone,
I am Using Pixhawk 2.4.8 FC, with TFMINI-S for Obstacle Avoidance. Using -I2c i am able to get the value of distance in proximity box.

But when I test in practical it didn't perform the act.

Whats could be the probable cause/ solutions for this.

Looking forward for your kind suggestions/assistance in this regards.

Thanks in Advance.
Posted by Gerbilstrom | Yesterday @ 11:04 PM | 117 Views
I believe ive got the hottest most bad ass flite test freedom fox yet! Ive gone thru 6 different motors and esc's trying to get the perfect setup and ive finally got it dialed in to an impressive amount of power, solid 8-10 min flight times on 3s and more on 4s. Im running a flite test 2218b radial brushless motor and a eflite pro switchable 30 amp esc .the power and flavor of flying is established FINALLY! With a 10x6 3 blade prop it climes verticle, performs excellent and flys smooth and fast, low and slow. It has ample power and very good acceleration i love it now! I hated the stock setup it was garbage no power, sounded horrible and just sucked. Ive finally got it setup how i really aimed to do and its finally fun to fly not a heart attack in the sky about to crash or stall. Finally after trial and error its absolutely perfect for all kinds of flying stunts and stol type fun.
Glad i got the problems fixed and its flying to good to be true.
Posted by epoweredrc | Yesterday @ 10:57 PM | 139 Views
Someone messaged me to ask me about the OMP m2 Explore that i own my thoughts and info about it so i thought i would put it all here also so that others can read it.

I have the OMP M2 Explore I purchased it back on July 10th 2020 so have had it almost 3 months now.
I got the Explore cause its a little cheaper then the V2 version, the difference between them is the Explore has plastic case servos where the V2 are aluminum, it has plastic swash plate and blade grips.
My first minor ( I thought) went down in tall grass crash broke the rear pin on the swash so i had to order the updated one.

Honestly if you have the extra to spend just get the V2 with all aluminum. I feel like the aluminum servos are worth it, cause i have looked and it doesn't seem like anyone sells the aluminum ones separate.

From what I have been told all of the V2,explores have the new updated governor and have been told they run better with a Flat curve.
mine is at 60%/70%/75% I normally just fly in stunt one, my tail holds great, I did bump up the speed for the tail from 5 to 7. for flying in mostly stunt mode 1
I flew more in stunt mode 2 this weekend and i did have the tail kick out with me on hard stops. (like doing a hard rainbow and stopping it fast going back the other way it kick 45 degrees on me.)
I might need to up it some more if i'm going to fly in stunt 2 more often.
it has so much power even in stunt one that i really don't need the extra power but it sounds cool.

I fly...Continue Reading
Posted by ptern | Yesterday @ 09:12 PM | 186 Views
This blog is for people who wishes to send me photos or screenshot or whatever...
To make it clean, after I review the info, I may remove them so don't expect the info stays here forever.
Posted by old4570 | Yesterday @ 08:21 PM | 187 Views
I have been collecting a lot of Linux flavours with the intent of checking them out . ( See what they taste like )

So from about 6.30 am this wet / windy morning .. I was almost out the door with the Cub ( XK ) when it began to rain . So much for beating out the rain / wind . Anyways , lots and lots of flavours of Linux waiting for the taste test .
Here is a list of Linux flavours that left a bad taste !

Alpine 3.10.1
Archlinux 2019.07.01
Bodhi 5.1.0
CentOS 8.1
Debian 10.4.0
Easy 2.4.1
Extix 20.4
Fedora Workstation
Kali 2020.3
Kodibuntu 17-3
Lubuntu 19.042
OpenMandrival 4.1
PcLinux 2019
Qubes 4.02
TinyCorePure 11.0
Zorin 15

Linux Flavours I did not hate

Mint ( A favourite )

Right now Mint would be at the top of my list .. Just does what I need .
So why ? My PC is old , really old .
Shortly about to become 5 generations old , and in puter terms that is really old .
Been years since I have done a CPU / MB / RAM upgrade to something more modern .
And now my system is left in the dust .

After a hardware upgrade I will toss Windows to the curb and go Linux for my main OS and then VB half a dozen OS flavours including Windows .
So with new CPU's about to be launched I have to wait and see how the $$ goes .
This CPU is rated over 200W , so looking forward to maybe a 65W rated CPU with way much more processing power .

I am about to download more Linux flavours ... Hopefully wont have to wait to long to play with the Cub .
Posted by Dgarrett | Yesterday @ 06:05 PM | 210 Views
I have 2 old(unused) Fuji 15's that the muffler doesn't have a pressure nipple. I purchased from Horizon 2 Saito(SAI50148) muffler nipples. Only information is outside diameter of thread is 3.8 mm. I took to Lowes and seems that 8X32 is thread size. Before drilling into mufflers wonder If anybody has tapped this nipple and what drill and tap should used? Building scratch twin star 15 in order to get into flying twins.
Posted by PittSpecial | Yesterday @ 04:34 PM | 257 Views

It must have been over one solid year that I have not flown my beloved Park Zone Spitfire Mk IX with the modified Park Zone 480 (E-Flite Number: EFLM480BL) and the Master Airscrew 3-Blade, 9 X 7 X 3 and using the 3-cell, 1800mAH, 30C, Lithium Polymer packs. The ESC bone stock, the E-Flite 30-AMP (V2).

It performed very well considering. I say considering as I attempted a roll and thank goodness it was high up in altitude and I was ready with the rudder! After landing a few minutes later I observed that the Left wing Aileron was not working. As soon as I tapped it with my finger it started working!

Seems like the old lady of the sky will need a remake in paint and Aileron Servos.

More to come and here are a few pictures of early this morning.
Posted by Mad_angler1 | Yesterday @ 04:14 PM | 283 Views
In this video I am giving an overview of the new Here 3 CAN based GPS with M8P Chipset for RTK Rover capability from Cubepilot

We look at the info and spec as well as walk you though setting it up on Ardupilot and Mission Planner with the CAN settings.

More info at

The Here 3 GPS From CubePilot For Drone & Rover - Overview & Setup Tutorial (15 min 0 sec)

Posted by cyberhoops | Yesterday @ 03:02 PM | 297 Views
I got inspired by water jet drives to design and 3D print a mono hull for a jet drive. Initially I used a small TFL drive, which led to 3D printing a two stage M-jet drive and the getting a metal 36mm drive unit.

The general intent is to use these boats for oval racing in the club, and maybe as my upgraded rescue boat. There might be enough interest to start a new class for club racing, or maybe race them against SV-27s.

All the hulls are basically the same, with revised transom geometry to fit the specific jet drive. The hulls are 27" long and 8 to 8.5 inches wide depending a bit on how wide the flat spot is for the intake. They have a dead rise of 22 degrees. The hull is printed in PLA with a thickness of 1.5mm, except the transom at 4mm thick and flat plate to mount the drive which is 3mm. The transom is printed with 70% infill and everything else is 15%. The full hulls with carbon fiber inlay weighs in at 24 ounces.

There are also little inserts on the outside edges at the joints between sections for alignment and strength.

They are all being powered by UL-1 motors, 120 amp ESCs on 4S.

The TFL boat has been tested one time. It worked nicely, but I should have sealed better around the drive at the transom. Water filled the boat and killed the servo limiting the testing. My first test was with a 1450kv motor, and it was a bit slower than an SV27. I think it will get up to that speed, roughly 35mph....Continue Reading
Posted by GroundControlRC | Yesterday @ 07:48 AM | 575 Views

Eachine E129 4CH 6-Axis Gyro Altitude Hold Flybarless RC Helicopter RTF - Review Part 1

I have an Exclusive Coupon for the Eachine E129 2.4G 4CH 6-Axis Gyro Altitude Hold Flybarless RC Helicopter RTF - Mode 2 (Left Hand Throttle) RTF 3xBatteries Version


This is good til the end of October but I believe there are a limited quantity.
Get it now!

Eachine E129 Gyro Helicopter RTF

Banggood GCRC

Here is a link to the Video:

This little Heli looks very cool and has some very nice features ;-)
Let's take it out for a spin and see how some of those features work.

Spare Parts:

Eachine E129 RC Helicopter Parts 3.7V 300mah Lipo Battery

2PCS Eachine E119 RC Helicopter Parts ABS Main Blade (I beleive these are the same as the E129)

2PCS Eachine E119 E129 RC Helicopter Parts Tail Blade

Eachine E119/E129 RC Helicopter Parts Coreless Main Motor With Gear

Eachine E119 E129 RC Helicopter Parts Tail Motor Set

Eachine E119 E129 RC Helicopter Parts 615 Coreless Tail Motor
...Continue Reading
Posted by ISDT | Yesterday @ 04:09 AM | 795 Views
Dear All,

We will take off from 1st OCT to 8th OCT for our NATIONAL DAY and MOON FESTIVAL, and we will be back on 9th OCT. I t will be a long Eight-day holiday and your message to us will be replied once we come back.

Thank you for your always attention to us!

Posted by Mandy Chen | Yesterday @ 02:19 AM | 853 Views
Hyperbola 701 Frame
Toray T800SC-24K Carbon Fiber with equilibrum overlay.
7 inch build with DJI FPV air unit and Gopro.

(1) Avenger LR 2004-1650KV motor:
Long Flight time
with HQ 7X4X3 and Hyperbola 701 Frame on 2S 20C 6000mAh 18min flight time.

(2) Avenger 2806.5-870KV motor:
Long Range
with HQ 7X3.5X3 and Hyperbola 701 Frame on 6S 6000mAh can fly 25-30 Minutes.

Email: [email protected]...Continue Reading
Posted by old4570 | Sep 28, 2020 @ 10:09 PM | 1,091 Views
6x4 Prop peaked at 6120 rpm on the bench was very marginal . Only thing to try was more prop .

7035 prop peaked at some 5940 rpm , this is only a little down on the 6x4 and thrust should be up !
Sorry , cant measure current draw ( would be nice ) but I did put my finger on the ESC and run the motor @ 100% .
There was not heat to speak off ! So this prop should be safe .

Next time , all the action will be VIA the 7035 .
Posted by Jay B. Scott | Sep 28, 2020 @ 06:22 PM | 1,270 Views
It's now ready to fly after a few years of playing with its assembly on and off. The final configuration mimics the usual modern civilian light twins, most of which had retractable landing gear--hence, no wheels.

Installed are two Rimfire .10s, spinning counter-rotating APC 9X6E props. Two 40 amp ESCs are mounted in the fuselage, behind a 3700 mAh 40C 3-cell LiPo. The aileron servos were moved from the bottom to the top for belly landing.

Weight ready-to-fly is 3-1/2 pounds. I'll be hand launching with my left hand holding the bottom of the fuse at the leading edge, with my right hand giving it some up elevator. Take-off will be at full throttle; with the counter-rotating props, the worry of left and down is eliminated. I also don't expect any ballooning on take-off due to its weight.
Posted by Jack Crossfire | Sep 28, 2020 @ 03:38 PM | 1,434 Views
The STM32F405 is now $12, 25% higher than it was 10 years ago, despite newer ARMs being around & single board confusers being less. They're charging for the realtime & the ADC.

There are much cheaper STM32 derivatives if you just need to control a 3 phase motor, don't want the hassle of juggling timers in software, different architectures, or bit banging UARTs. They can do everything that an ATMega does. The Feiyu gimbal used STM32F103's.

As the apartment inventory of 10 years ago declines & the time to order new micros approaches, there's sort of a junction between buying new STM32F's for everything or continuing to buy ATmegas & PICs to be like everyone else. The lion kingdom definitely isn't going to buy any more PICs & the 8 bit age generally seems over.

Interestingly, there's never been an open source J-link/SWD/DAP programmer, as popular as it is. There is an openocd option which uses the st-link chip on an stm discovery board to program a variety of ARMs. There is a library for generating SWD codes but not flashing firmware:

The lion kingdom once made an openocd driver which used a PIC as a JTAG emulator but not SWD. The trick is openocd already had to do everything above the bit banging level.
Posted by Sean Oelofse | Sep 28, 2020 @ 05:26 AM | 1,897 Views
I've completed the build of the F-20 Frankenstein.

Check it out .....
Posted by Jack Crossfire | Sep 28, 2020 @ 02:40 AM | 2,012 Views
It was after laying this out that the lion kingdom realized how much its philosophy changed in the last 20 years. An ARM is seriously overkill for controlling a 3 phase motor & receiving packets from the radio.

20 years ago, a lion would have used an 8 bit PIC, developed the routines required to generate 3 PWM waveforms in software & receive packets from the radio. It's just so much easier to get that working on an ARM & there are enough spare ARM chips in the apartment, it's no longer worth the trouble. If it was 20 years ago & lions had only PIC's, it would have been done the old way.

Then, after playing with the spectrum analyzer, it was revealed that the giant loop antennas lions used for the last 11 years are unnecessary. They were seen as a way to use balanced antenna pins without a balun. In reality, a monopole gives good results with just a 16nH inductor shorting the outputs & a 100nH inductor in the 3V supply position. If a loop antenna is used, it doesn't need the 16nH inductor.

Lions had always based their usage on the balun circuit in the MRF49XA datasheet & never tested the signal strength of different antennas, even with the RSSI functionality built into the radios. They just spread the radios apart on a golf course until they stopped receiving.

The extra parts for the MRF49XA may have been to match a 50 ohm load. When this part was rebranded later as the SI4421, the new datasheet only showed a loop with no inductors, but lions never saw it. They even left out the 100nH inductor that supposedly chokes the RF from entering the 3V rail. The 100nH would only be needed for transmitting & FCC certification. Not sure where the 16nH came from. The MRF49XA datasheet showed a 22nH.
Posted by burkefj | Sep 27, 2020 @ 08:27 PM | 2,467 Views
This was a flight on the new Aerotech 29mm single use 8" long 17 second burn H-13 motor with a spike off the pad and 3# thrust for the remaining burn time, loaded on the pad this 6' tall glider weighed 32 oz, it was a bit sluggish on boost when going vertical so I let it angle a bit and in order to keep it overhead flew in a corkscrew over the top of myself till burnout at approx 1200 feet.
6' R/C rocket glider flying on 17 second burn H-13 longburn motor (4 min 5 sec)

Posted by old4570 | Sep 27, 2020 @ 08:08 PM | 2,570 Views
18650 Mini Stick (20 min 34 sec)

The Overlord has graciously metered out 2cc of RC ! To those requiring a dose of LIVING !
I woke up @ 6am and was on my way to the park before 6.30am .

Yes , I dropped the proverbial ball by not pre flight checking before leaving home . There were things forgotten about !
Things best left un said !

So , came home , fixed a few things and headed back out .. Yes , got lots of walking in this morning and only 1cc of the precious 2cc of RC
Lucky for me the plane is powered by a 18650 . so run time is exceedingly high !
What is not high is the power / thrust . It is very much marginal .
It does fly , but there is little in the way of enough power . Especially if you do something silly there is no powering out of the situation . So one needs to fly as if the models life depends on it ( probably does ) .

6A 1-2s ESC
6x4 prop
RacerStar 1811 3800kv

Mini Stick . = What a very nice little plane ! On a decent 2s power system with at least 1:1 power to weight this little stick should be a real joy to fly . It does get knocked about by the wind , so in that regard it would be a fair weather flyer . But again , a better power to weight ratio would negate some of that sensitivity to wind . My entire flight was 90% power to begin with and as the battery voltage dropped under load I was up to 100% power . Which was just enough to keep the stick flying smooth . At this time my only choice is to...Continue Reading