Posted by --Oz-- | Today @ 05:06 PM | 256 Views
This thread is about different ways to control a brushless motor, the pros and cons of the different ways and open discussion about brushless motor drive. All idea's and suggestions welcome.

I have a lot of collected old hard disk drives. The neo magnets are very strong, the head spindle and motor bearings are amazing with zero slop. Controlling the three phase brushless motor is not simply hooking up power wires and it spins like a brush motor does. About 3 years ago I had the idea to drive a brushless motor with a single fet and square wave generator and it works, but with limitations.

I currently have played with these brushless motor drive methods:
A: Single fet and function generator driving the motor.
B: H-Bridge and function generator driving the motor.
C: Using 3 fets, 3 resistor and three caps in a cascade fashion
D: Using 3 fets, a decade counter (4017 setup for 3 count) and a function generator.
E: RC electronic speed control (ESC) driving all three phases, with a servo tester to control the esc.

A: Single fet and square wave generator driving the motors 2 phases
(phase-1 to +supply, phase-2 to fet and then ground). Current only goes one direction.
Pro: Very low cost.
Con: Slow accelerating, decelerating and torque.

B: H-Bridge and square wave generator driving the motor 2 phases.
(phase-1 to +supply, phase-2 to fet and then ground). Current goes both directions.
Pro: Very low cost. (few bucks)
Con: Slow accelerating and decelerating...Continue Reading
Posted by nagas | Today @ 12:14 PM | 548 Views
Ingenuity Coaxial Helicopter

Most RC pilots, especially us chopper heads will be aware that taken along with the Perceverance Mars Rover, the first extraplanetary RC aircraft is due to make its maiden flight today 11th April 2021, the incredible Ingenuity coaxial helicopter. History in the making!

Ingenuity's design has clearly been influenced and much of it derived from the recent advances in RC helicopters, including flybarless, electronically stabilised flight control mechanisms as well as various components that can be bought off the shelf. Surprisingly, many of the componets in Ingenuity have been purchased by NASA, and can be found in other applications such as our mobile phones.

Ingenuity has a rotor diameter of 1.2m, a height of 0.49m and a total mass (not its weight on Mars!) of 1.8Kg with 350 Watts power available for a 90s flight.

The Phoenix Model and further details can be downloaded here:

Model Tour

Ingenuity Tour (0 min 34 sec)

Posted by DutchRC | Today @ 11:08 AM | 609 Views
Halloa people

soo this here is basically the last video in my "flying tank" series Ofcourse this FPV quad needs a FPV-setup, and I decided to try the brand new Caddx Ratel v2 to see what that's about
Should be quite nice as the v1 already is.. I only have one of these Ratel v2 camera's so I can't tell you much about the production-quality other then "mine works" :P

Link to it: Caddx Ratel v2 Freestyle FPV cam

And the VTX I use for this quad is a known quantity (to me).. the Rush Ultimate Plus has proven itself...

Link to that: Rush Tank Ultima Plus 800mW VTX

So? Let's see how this addition to the Flying Tank works out

Caddx Ratel 2 + Rush Tank Ultimate Plus! Project 2021 Flying TANK :) - FPV Setup :) (15 min 38 sec)

Posted by Mad_angler1 | Today @ 04:42 AM | 1,062 Views
DJI FPV Drone Smart Battery

This video is an overview of the DJI Smart Battery and how it works, its features and how to get the best live out of it when using with the DJI FPV Drone and Goggles V2.

DJI FPV Drone Smart Battery - How It Works, Tips & How To Get Best Life (15 min 24 sec)

Posted by jmxp69 | Yesterday @ 10:45 PM | 1,365 Views
Posted by jefffassbinder | Yesterday @ 10:41 PM | 1,418 Views
Well taking the nacelle back to the glass that I started with a long time ago. Well plan to sand smooth and prime up and use again.
Posted by lawrence4 | Yesterday @ 08:45 PM | 1,560 Views
Lalysee flying wing Maiden Flight Catch (5 min 19 sec)

Pre setting and wide guess C.G is perfect.
Luck still with me.
Posted by Jack Crossfire | Yesterday @ 03:44 PM | 2,173 Views
presets (0 min 48 sec)

So much easier to wake up when it repositions itself.
Posted by kopterheld | Yesterday @ 01:53 PM | 2,307 Views
iFlight Protek25 has 1404 motors and is a strong cinewhoop, but it can fly it without the propeller protection, i.e. as a great freestyle quad.
2021-04-10 iFlight Protek25 Freestyle MOD less 250g -
iFlight Protek25 Freestyle MOD unter 250g (4 min 30 sec)

iFlight Protek25 has 1404 motors and is a strong cinewhoop that can even carry a Gopro8. Optimally fits a GoPro8 Lite on it, which can be converted to the Lite version with the iFlight GoPro8 case.
2021-04-10 iFlight Protek25 Cinewhoop with GoPro8 -
iFlight Protek25 Cinewhoop mit GoPro8 (5 min 51 sec)
...Continue Reading
Posted by jefffassbinder | Yesterday @ 01:41 PM | 2,383 Views
Stripping down my Kangaroo jet and preparing for a new design paint scheme. It has worn the Hartman scheme for some time but now looking for something more glossy and shiny to look at.

I’m going to use the silver bullet as inspiration.
Posted by djmoose | Yesterday @ 08:13 AM | 2,555 Views
Wing Assembly of the 92" Black Horse Gilmore Red Lion ARF - Wedell-Williams Model 44 - Roscoe Turner (19 min 10 sec)

Let's glue the ailerons with pin hinges, install the servo, measure the pushrod, and run the servo extension in this first build episode of the 92" Gilmore from Black Horse Models and Motion RC!

"Don Young stood at one end of the field. Harry Williams and Roscoe Turner positioned themselves at the opposite end, a distance of one mile. Their stopwatches were synchronized to clock Jimmie's speed. Near the completion of his pass, something went terribly wrong. Aileron flutter or buzz apparently progressed to wing flutter. This caused the left wing to collapse when its guy wires snapped under the stress. The individually operated ailerons, designed by Jimmie, helped him keep the ship from rolling too fast about its own axis. This delayed the inevitable tumbling of the plane and allowed him time to unfasten his seat belt and bail out." - page 32 - Wedell-Williams Air Service
Posted by djmoose | Yesterday @ 08:11 AM | 2,507 Views
Complete Walkthrough of the Hitec HFP-30 Servo Programmer (12 min 51 sec)

In depth explanation of the Hitec HFP-30 servo programmer explained and demonstrated for you.

I explain in detail both the servo testing mode and the servo programming mode of the HFP-30 programmer utilizing a Hitec brushless 9831 and one of the newer D-Series D951TW servos. If you're confused on exactly what the sync port does, I'll explain that as well.
Posted by Tazkiller85 | Yesterday @ 05:03 AM | 2,609 Views
Yep Les Amis,
Que de bonnes nouvelles ce jour là !!! J'ai en test depuis quelques jours le nouveau casque Gaming SANS FIL de chez TRONSMART, le SHADOW. Après l'avoir essayé dans différentes configurations, Yacine et moi sommes tombés d'accord. Une belle qualité de finition, de conception, une utilisation simple et rapide, un rendu correct mais pas assez précis dans toutes les gammes de fréquences mais surtout un prix bas pour un casque de ce type qui propose une connexion wifi ! Compatible avec beaucoup de plateformes, le micro amovible est efficace et semble durable. En bref, on aura du mal à trouver mieux dans cette gamme et à ce tarif là, donc, on ne peut que vous le conseiller pour un budget réduit si vous voulez du "sans fil wifi" ... Prenez soin de vous et merci à tous pour votre soutien .

Tronsmart Shadow Casque Gaming Wifi - Review Test Démo - Gagnez vote Casque sans Fil ! (29 min 1 sec)

NOTATAZ : 16.5/20 Bien pour le prix !

- Casque micro Tronsmart (coupon SHADOW01) :
- Boutique Tronsmart :
- Tronsmart SHADOW (Banggood Vente Flash ):

A ne pas manquer !
Pack DJI FPV COMBO en précommande 1146€ avec ce coupon BGDaViS :
Bonne affaire ( entre 270€ et 310€ ! ) :
- FIMI X8 MINI (Promo précommande coupon BGX8MINI ) :

Posted by Tazkiller85 | Yesterday @ 05:02 AM | 2,601 Views
Yep Les Amis,
La preuve en image, sous tous les angles ! J'ai en test depuis quelques jours la nouvelle caméra de surveillance indoor de chez IMOU, la RANGER 2C. Une application simple à utiliser mais très complète et une caméra qui propose quelques innovations intéressantes pour le prix. Elle capte les bruits anormaux, les mouvements, les formes humaines et poursuit les rodeurs ! On peut choisir de tout enregistrer sur le Cloud, smartphone ou carte mémoire, simplement être averti ou enregistrer juste les mouvements, en bref, les options proposées sont nombreuses et très efficaces. Un bon investissement soit pour surveiller bébé ou pour garder un oeil sur votre propriété ou magasin en toute simplicité... Prenez soin de vous et merci à tous pour votre soutien .

Ranger 2C IMOU - Review Test Démo - Gagnez votre caméra de surveillance ! (24 min 32 sec)

NOTATAZ : 18.5/20 Efficace !!!

- Site EMOU Life :
- Ranger 2C chez (coupon 20% TAZKILLER2C ) :
- Boutique IMOU sur :

A ne pas manquer !
Pack DJI FPV COMBO en précommande 1146€ avec ce coupon BGDaViS :
Bonne affaire ( entre 270€ et 310€ ! ):
- FIMI X8 MINI (Promo précommande coupon BGX8MINI ) :

- TABLEAU DES PROMOS ET COUPONS BANGGOOD 2021 RC et ACCESSOIRES (remis à jour...Continue Reading
Posted by lawrence4 | Yesterday @ 03:45 AM | 2,635 Views
Lalysee Glider Flying Wing Add Motor Build Log (1 min 25 sec)

Airfoil FAD04
C.G 110mm
Wingspan 700mm
Length 395mm
Height 120mm
Surface : 17.5 dm²
Weight 168g
Wing load : 9.6 g / dm²
Color Orange & RED & Blue
Motor LD power FR1306 3100KV
Receiver ORX DSMX 2.4G 4ch
Servo DUALSKY AS55 6g x 2
Propeller GF 5030R
Battery 2S 350mAh

Plan Download from:
Posted by blue_peace | Yesterday @ 01:14 AM | 2,716 Views
I have a former history in RC but I haven't touched it in like 6 years. I tried to get back into it but never had the place... when I was younger I was in high school/didn't have any responsibilities. Lived by a field, I suppose it's all an excuse.

I switched to software, kinda failed in school, I'm an SWE now on paper. Outside of developing web applications I've been trying to get into the embedded space and robotics. Flying/submarines is still a thing that will factor into it at some point.

Just posting some other stuff I'm working on/worked on.

Eventually if my life doesn't implode my plan is to be like a homesteader somewhere but have access to tech still (Starlink/Amazon). The essentials, nevermind food.

I'm working on it.

The robot I designed/made from scratch, it sucked. Not strong enough/dumb. But it was good as far as learning to program multiple servos moving in Arduino. Also did the ESP to Arduino connection. Not really "radio controlled" but WiFi controlled ha.

The other thing is a SLAM attempt as a response/thing I wanted to address from the robot. Then I would adapt it to a smaller 12-servo true quad with a Teensy onboard. It's not in this image but there is an IMU on there. The idea is you take an image (slow processing as it's single core/not optimized) and find things in there/draw bounds around them as a cube in 3D space. The ToF sensors(2 in image eg. "Lidar" and ultrasonic) determine how far away it is. Then using kinematics to track the robot/vehicle's velocity/accel you can tell how far away you are from things/map them in memory/3Dspace. It sounds easy but it's not haha. I'm not a math wiz and the computer vision aspect alone is pretty difficult but it's a fun project, still not finished.
Posted by old4570 | Apr 09, 2021 @ 08:47 PM | 2,878 Views is having some really good prices right now on some micro planes .

Volantex Sports Cub 500 $70
Eachine Mini F4U $80
E0717 1030mm Wingspan $36

Might be worth a look if you were waiting for a sale .

Here it's windy and a bit wet , really looking forward to trying out the stunt flaps on the Micro Tundra ..
Should be interesting , will it go on it's back ?