27 December 2012

Scratch Built Plane - SubsonicDrone v1

Part 1 video - Just finished the preliminary design of my first RC plane which has the basic elements of Skywalker and Micro Drone v3. I am using SketchUp to model the this plane.

Part 2 video - Added parts and electronics that include:

Subscribe my SubsonicHobby YouTube channel for the latest development. As always, your ideas and comments are welcomed.

Part 1



Part 2

15 December 2012

DIY Clover Leaf Antenna

This post has a few quick snap shots of how I DIY Cloverleaf Antenna. Keep in mind that I am not here to reinvent the cloverleaf which created by IBCrazy. Please go here for the most accurate build instruction. This is just my very own build blog of this antenna.

Cloverleaf Antenna
  1. Cut 3 wires (I use AWG 14 or 2.082 mm^2 electrical wire, but the inventor of the cloverleaf antenna recommends 22 or 23 gauge) to same length that matches your video transmitter frequency. Mine is 5.8 GHz = 2.08” or 53mm.

Here is the overall wire length calculation:
In inches = 12088/frequency in MHz
Or in mm = 307022/frequency in MHz
    Cloverleaf wire

    01 December 2012

    FPV success


    Finally I finish the FPV setup on EZ Hawk. Also maiden the plane with the setup. Success!!!

    FPV video

    FPV Setup

    FPV
    Modified the G-OSD II to CL-OSD.

    22 November 2012

    Scratch Built - Micro Drone V3

    Here is the finished Micro Drone V3.

    Maiden with 2.5 inches CG from leading edge. Using 2213N 800kv motor and 3S 1000mAa LiPo. The motor does not have enough speed but enough torque. I am considering to change the motor to 1450kv motor to speed the plane up.

    Here are the part list:




    Micro Drone V3
    4 inches KFm2 chord. You can find more knowledge about KFm wing profile here.

    24 October 2012

    HobbyKing ASW 28 Glider Defect and review

    This is a review of the ASW 28 glider from HobbyKing.

    Overall, it is the worst plane I have ever bought. It is a defected plane. This seems to be a known issue for sometimes, but HobbyKing elects to ignoring it and continues to sell them. The worst is that HobbyKing ignores the responsibility of selling bad stuff.

    I agree with getting what you pay for, but cheap products mean bad quality, unreliable or bad performance, but cheap products should not be defective and malfunctions.

    I contacted HobbyKing and they asked me to ship it back in my own cost. It would cost me USD$90.00 to shipping it back. The plane cost USD$ 99.00. Would you pay the $90.00 to ship back which isn't your fault?

    HobbyKing should take the responsibility for all deflective products, because we (customers) pay HobbyKing as a middle man to deal with Chinese manufactures. We pay HobbyKing to take the low cost manufacture risks. This means HobbyKing doesn't do their job right. They are taking advantage from cheap labors and low cost manufactures; they are also taking advantages from selling around the world without worries of any consumer law.


    29 September 2012

    FPV New cl-osd display layout

    First, I'd like to give credit to cl-osd for this display creation. The new modified OSD layout shown below is based on my own preferences
    This is NTSC, imperial units, voltage 1, 2, and google coordinates always on configuration. This is a HobbyKing G-OSD II. I am using 900MHZ 200mW Tx/Rx & 1/3-inch CCD Camera NTSC.

    Here are the eep and hex files that I share with you, and this is the entire File.

    CL-OSD



    23 September 2012

    DIY Home made FPV console setup - EZ Hawk Sky

    Materials:
    Here is the final look of the setup and video:

    EZ Hawk FPV Setup


    Steps:

    1: Use Polystyrene Sheet or thin plastic plate and cut to fit the fuselage. This will be your FPV console base. Tape the Velcro on both sides. See pictures below.

    03 September 2012

    DIY Inverted Vee Antenna for FPV - 900MHz


    This is my DIY inverted V antenna building experiences. Hope you find this useful. You may also find this from Aliexpress for a cheap price.

    Here is the final product......

    Inverted Vee Antenna
    Inverted Vee Antenna

    Materials needed----



    • 12 AWG solid wire. It can be purchased from any local hardware store. It is a solid electrical wire. I bought 5 feet of it and it cost me US$1.50
    • A few tie wraps as needed. See pictures below.

    26 August 2012

    Pilot-1 Wedell-Williams 1/8 Scale ARF

    Specifications:
    Length: 31"
    Wingspan: 40"
    Flying Weight: 35 oz.
    Controls: Ailerons (2 servos), Elevator, Rudder, Throttle
    Wing Area: 325 sq. in


    Red Bull Edge 540 RC Plane

    Specifications:
    Wingspan: 1000mm
    Length: 930mm
    Recommended Motor: 28mm out runner
    Controls: Aileron (2 servos), Elevator, Rudder and Throttle.
    Features all wood, light weight construction
     bought it from hoelleinshop .
    Prop:11 x 5.5
    ESC: 30amp

    Unbox

    Maiden




    Some photos here

    23 August 2012

    G-OSD flashed - converted to CL-OSD

    Here are a few steps with pictures that show how to change the Hobby King G-OSD II firmware to CL-OSD. Here is where I get it. I know there is a blog talks about it, but it has 100+ pages to read. I thought I would just simplify some steps here. At the end you can see a video that shown how the G-OSD react and how the screen looks like during the uploading process.

    Here are the other links to the Success and My New Display Design.



    Step 1: Go to http://code.google.com/p/cl-osd/source/browse/#svn%2Ftrunk%2FG-OSD and download the cl-osd.hex and cl-osd.eep files. Here is the screen shot of the website.


     Step 2: To download the files, click on the View raw file at the lower right hand.


    Step 3: You should see the code like below. Then copy the codes and paste them in Notepad and a folder.


    10 June 2012

    My Flying Field

    First Colony Middle School football field

    • Location: First Colony Middle School football field
    • Address: 3225 Austin Parkway, Sugar Land, TX
    • Landing: Grass landing
    • Best Time to Fly: Early in the morning
    • Parking: Free
    • Plane Type: Park Flyer
    • Notes: This is a large football field, and it is good for park flyers and up to 1300mm wing span planes.






    View Larger Map

    My Flying location

    Clements High School football field
    • Location: Clements High School football field
    • Address: 3225 Austin Parkway, Sugar Land, TX
    • Landing: Grass landing
    • Best Time to Fly: Early in the morning
    • Parking: Free
    • Plane Type: Park Flyer
    • Notes: This is a large football field, and it is good for park flyers and up to 1300mm wing span planes.

     

    09 October 2011

    TriCopter from HobbyKing Quadcopter Frame V1


    Here are a few photos of the modification in progress. I am trying to convert the quadcopter frame from HobbyKing to a Tricopter frame with minimum cut, drill and glue. In other words.....cheap but nice.



    01 October 2011

    Building Tricopter with HobbyKing Quadcopter Board --- Installing AVR Programmer Driver


    I am building a Tricopter and using HobbyKing Quadcopter Board by flashing the firmware with a Tricopter software.

    This blog shows how to install Sparkfun Pocket AVR Programmer Driver for Window XP.





    24 September 2011

    Building Tricopter with HobbyKing Quadcopter Board --- Unbox Pocket AVR Programmer

    I am building a Tricopter and using HobbyKing Quadcopter Board by flashing the firmware with a Tricopter software.

    This blog shows the unboxing the Pocket AVR Programmer which was purchased from Sparkfun.com. The programmer came with a 10-pin to 6-pin connector cable which will be used for connecting the board to the programmer.