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RobJCook's blog
Posted by RobJCook | Feb 03, 2013 @ 03:37 PM | 1,982 Views
Built as a cheap quad with motors I had sitting around. A couple of the motors rattle (bad bearnings).

But!!! ....
Flies well and very stable.
Tracks straight. Yaw good.

Surprised about the high P gain required. Had tried 140 but still not enough.

value Pitch/Roll
Pg 320 (can increase, no oscillations yet!
Pl 100
Ig 110
Il 20

Value Yaw
Pg 160
Pl 20
Ig 60
Il 10

Value Level
Pg 85 slight osc
Pl 20
Roll Trim 0
Pitch Trim 0

HK Quad Frame

Turnigy 12 A Plush ESC x 4
8x4 Props
2213N 800Kv
With KK2 Flight Controller, 1.4 Software

Weight (as shown):

No Battery: 670g
Posted by RobJCook | Oct 23, 2012 @ 10:10 PM | 2,049 Views
This was my learners quad and it still goes gr8
Built back in 2011

Features:
  • Wooden booms - don't laugh at them!
  • Easy to mount and fix.
  • Cable ties on motors and a plastic food container to house the FC
  • Flies really well and easy to maintain and repair. Actually crash damage is never too much.
  • All motors are now angled 5 degrees into the yaw direction for very positive yaw control.
  • HK450 Heli skid to land on.

Uses old Warthox MultiWiiCopter board with Wii motion gyros, and BM180 accelerometer.

Good value!
Posted by RobJCook | Oct 08, 2012 @ 06:08 PM | 2,148 Views
My latest Quad

Its a cross between a MultiWiiCopter and the Talon. Scary - maybe. It just evolved that way!

Flys really nice. Using MWC with baro for alt lock.


Data

Carbonbird 775 kva motors http://www.multiwiicopter.com/produc...a-normal-shaft
Replacement prop adapter: http://www.hobbyking.com/hobbyking/s...idProduct=5670
MultiWiiCopter plates http://www.multiwiicopter.com/produc...-plate-fr4-g10
MultiWiiCopter Boom Holders http://www.multiwiicopter.com/products/sku-16
Talon 14mm Motor mounts: http://www.hobbyking.com/hobbyking/s..._Gear_Set.html
FC: Early MultiWiiCopter PARIS v 3.0 - Classic Nintendo Wii Motion Plus MP+ 3 axis accn and baro
Baro on 12c bus: http://www.hobbyking.com/hobbyking/s...er_Sensor.html
ESC TURNIGY Plush 12amp (2A BEC) BESC x 4
UBEC for 5v power to FC: http://www.hobbyking.com/hobbyking/s...idproduct=4319
Booms 12mm http://www.hobbyking.com/hobbyking/s...dproduct=10981


Distance motor to motor centres (along booms and across centre of quad): 600mm

Motors tilted 5 degrees into yaw direction

Weight (as shown):

No Battery: 735g
3S 2200: 912g
4S 2200: 961g

Current Draw
3S 2200 Lipo -- 11 amps hover, 13 amps climb
4S 2200 Lipo -- 9.5 amps hover, 13 amps climb

using 8x4 props http://www.hobbyking.com/hobbyking/s...dproduct=11331


MultiWii 2.1 code

PID values: See image
Baro values need further tweaking
Posted by RobJCook | Apr 27, 2010 @ 05:50 PM | 2,893 Views
Here is my new Tricopter - thanx to Signguy, and Mongrel http://static.rcgroups.com/forums/im...lies/smile.gif.

Features:
  1. Props protected by extended arms. Good for a beginner!
  1. Tail pivot is a modified steering arm. Mounted above the arm for protection, and held on by cable ties and double sided tape. I have tested this mechanism on an earlier model (see pix) with great success
  1. The pool noodles are extend upwards to protect the props should the copter flip.

More details to come!
Rob
Posted by RobJCook | Jun 28, 2009 @ 03:13 AM | 4,080 Views
Built the Goof-proof antenna using an old PC case for sheet metal. It works great, even through the house walls.

Also re-wired the camera-tx using a 6 pin edge mount PCB plug to tie all the power leads together and take strain off the TX plug. This allows me to plug the camera and mic into the system using servo plugs.

My flight box got a rework. Now you can turn on all the ground gear (except goggles) on with one switch, including the RV video splitter.

The HS-81 pan servo has been converted to 180 deg, and it works nice.

Have to record some vid soon and post it.
Posted by RobJCook | May 19, 2009 @ 11:10 PM | 3,397 Views
This is my simple video RX setup.

Tripod to get that antenna off the ground.
[this did not help, I think the whip antenna needs a ground plane).


Video cables to where I'm sitting.

RV Video Splitter to give vid to goggles and vid camera (recording).

12v Gel Cell Batt to run these.

Later:

Patch Antenna (the Goof proof one)
15" DC12v LCD TV (Available from Dick Smith Electronics, Australia) - so others can watch too.

:-)
Posted by RobJCook | May 19, 2009 @ 06:42 PM | 3,136 Views
I made a pod like RV's EzPod and it holds the TX, Batt, Pan n Tilt, and Camera.

The standard cam plug was wired to a servo JST on the back of the camera to keep the connections good.

The battery and TX are held in place with velcro.

Camera attached to the tilt servo with double sided tape.

No sound yet.
Posted by RobJCook | May 18, 2009 @ 10:29 PM | 3,211 Views
At last its really true, I have an FPV plane. All that dreaming of flying like Wobby or FPV Leif is now a reality!

So what have I got to fly with?

An EasyStar -- of course!

Specs:

Motor:
Himax 2815 2000, Brushless Inrunner
with a 6 x 4 prop

Electronic Speed Control:
Eflite 25 amp

Battery Pack:
2650 mAh 3S20C LiPo

Radio:
Futaba 7Channel 2.4 Ghz Transmitter with a Futaba 7 Channel Receiver to fly it

Servos:
Two HTX 900 - Elev, Rud
HTX 900 - Tilt
HS-81 Pan

Video Link:
RangeVideo 900 MHz Transmitter/ Receiver 12v system

Camera:
KTX 171, 12v