HobbyKing.com New Products Flash Sale
kfong's blog
Posted by kfong | Feb 18, 2008 @ 08:59 AM | 7,851 Views
http://www.embeddedtronics.com/

My latest interest, caught up in the ebike craze. RC motors next!
http://endless-sphere.com/forums/vie...php?f=3&t=6348

For CNC stuff and general metalworking
http://www.embeddedtronics.com/metalworking.html

For stuff on electronics and robotics
http://www.embeddedtronics.com/related_sites.html

For misc. circuits
http://www.embeddedtronics.com/design&ideas.html
Posted by kfong | Feb 14, 2008 @ 04:03 PM | 8,941 Views
Spectrum timer mod.
Change your DX7 throttle control to also start the timer function, just like a Futabla 9CAP
$20 for a complete board.
http://www.rcgroups.com/forums/showthread.php?t=905787
--------------------------------------------------------------------------
Monokote or Econokote decal cut on CNC machine. Artwork supplied must be all black. Cost of Decal will range from $10-$20 depending on detail, only one color, based on what I have in stock, max size 8.5" x 11". Odd colors, add $6 extra or you can provide me the color covering in a 8.5" x11" or smaller piece since that's the easiest size envelope to use. Any custom work such as graphics or multi colors will need a quote.

Technique is based on this thread.
http://www.rcgroups.com/forums/showt...93#post9457541

Decal will be sent on glad press n seal for you to apply.
--------------------------------------------------------------------------

Wing templates cut on CNC. You must provide the dxf files. I can make them out of 1/16 FR10 fiberglass or from thin formica, machine used will be a very precise servo driven CNC mill. Resolution of .25mils, video of the mill.

http://www.embeddedtronics.com/uhuservo.html

$25 per set of 2 templates with $5 shipping fiberglass FR10.
$20 per set of 2 templates with $5 shipping thin formica.

This is top and bottom for the inner and outer sections. That should allow you to do a complete wing.

For complex wings add $10 per additional set of templates.

Any other types of 2D templates as well, but price will be dependent on the project.

Best to contact me at kinf@embeddedtronics.com for quicker response
Posted by kfong | Nov 08, 2007 @ 03:57 PM | 8,180 Views
These are boards I have spares of that I can sell.

Spectrum Timer mod
http://www.rcgroups.com/forums/showt...7#post10303310
$20 for the board.

CVS USB connector
http://www.rcgroups.com/forums/showthread.php?t=668235
$3 with a self addressed stamped envelope

Remote camera sensor cable mod
http://www.rcgroups.com/forums/showt...ds#post7429545
$4 with a self addressed stamped envelope

Servo Tester
http://www.rcgroups.com/forums/showt...20#post4686020
$5 with a self addressed stamped envelope

DIY pitot tube circuit
http://www.rcgroups.com/forums/showt...95#post4750795
No software developed, but based on this design http://www.kapelec.com/altivie1.htm
$10 with a self addressed stamped envelope

Kin Fong
2517 Cobden Street
Sterling Heights, Michigan
48310
Posted by kfong | May 30, 2007 @ 03:17 PM | 8,840 Views
Place holders for links I want to keep track of.

Ebike links:
My Ebkike Links
http://www.endless-sphere.com/forums...hp?f=3&t=21888

My ebike projects:
Motobecan 08 Fantom, cyclone 650watts and A123
http://endless-sphere.com/forums/vie...php?f=3&t=6348

Mongoose and cheap brushed Currie motor setup
http://endless-sphere.com/forums/vie...hp?f=6&t=11542

Outback Mountainboard Electrified A123
http://endless-sphere.com/forums/vie...p?f=12&t=11137

X-Treme Electric Scooter conversion to stand-up
http://endless-sphere.com/forums/vie...p?f=12&t=12031

Dewalt A123 BMS battery interface solution
http://endless-sphere.com/forums/vie...p?f=14&t=10986

Other ebike links:

Dual freewheels
http://www.endless-sphere.com/forums...p?f=28&t=13532
http://www.endless-sphere.com/forums...p?f=28&t=13862

Proportional regen
http://endless-sphere.com/forums/vie...php?f=2&t=9950

Sensored motor
http://endless-sphere.com/forums/vie...sored+rc+motor

Ebike using turnigy motors
http://www.hobbycity.com/hobbycity/f...ts.asp?TID=289

Cheap regen circuits
http://endless-sphere.com/forums/vie....php?f=2&t=583

Use the 1010B as a current calibration source
http://endless-sphere.com/forums/vie...183694#p183694
-----------------------------------------------------------------------
RC Links:

RC Radio Tx - Re-inventing the wheel! - PC based joystick
http://www.rcgroups.com/forums/showthread.php?t=1231017

Build...Continue Reading
Posted by kfong | May 17, 2007 @ 02:13 AM | 8,779 Views
My Latest creation, this one has been a long project in the making. All built from scratch. Lots of original ideas. Works remarkably well. Even the driver boards were designed with the help of my brother and I. This CNC mill was specifically made to cut balsa and foam. It's quite accurate, within .01" tolerance which is plenty for rc stuff. Now I can finally focus on some RC planes I've been wanting to build.

Thread
http://www.rcgroups.com/forums/showt...41#post7469041
Posted by kfong | Jul 13, 2006 @ 09:33 AM | 9,569 Views
It's been a busy year. I've started on quite a few projects specifically for RC. My main interests has been electronics but ever since I caught the flying bug two years back I've been learning all I can on building and flying RC planes. I've created quite a few RC related boards, many I have not had the time to complete the software for or even posted about. This blog seems like a good repository for these projects since they are limited runs and don't have a high enough commercial demand for my main web page. My other interest is in CNC, eventually I hope to see a project that merges all of these interests together. Planned projects are AUV and aerial photography. Biggest setbacks are time and keeping a project interesting enough to see it through.

Email me on a project you are interested in, chances are I probably have the PCB board for it.