RC India

hi guys

this is for all the DIY kind or people on budget  :P

i made a elevon mixer for my flying wing glider( thanks to raghavan for cutting the wings ),i don't have a computer radio at ( still being build ) so for the time being i added this feature to my old trusty radio ( futaba AM attack 4 ).

this is not my own design , i got it from the net and this is one of the best free source mixer designs . see the link  below!

1.http://ilufa.orgfree.com/MIXER_E.htm

2.mixer setup information !

http://ilufa.orgfree.com/MIXER_E1.htm

parts that u require to complete the built are

SETUP 1

1. 16F84A                             --- micro controllers
2. 4MHZ crystal                      --- only if u plan to build the mixer using 16F84A IC , like i did
3. 0.1uF                                --- disc capacitor, one required
4. 33pF                                 --- disc capacitor , two required
5. dip switch                          --- 2 pin
6. small vero board or PCB
7. IC base                              --- depend on which IC you are going to use 18pin or 8pin !!!
8. servo connectors male          --- two required
9. straight header                    --- 40 pin male strip
10. misc                                 --- solder wire , soldering iron , multimeter , wires etc.

SETUP 2

1. 12C508A or 12C509A            --- micro controllers
2. 0.1uF                                --- disc capacitor, one required
3. dip switch                          --- 2 pin
4. small vero board or PCB
5. IC base                              --- depend on user n which IC you are going to use 18pin or 8pin !!!
6. servo connectors male          --- two required
7. straight header                    --- 40 pin male strip
8. misc                                 --- solder wire , soldering iron , multimeter , wires etc.

total cost varies from 120/- to 60/- for 16F84A and 12C508/9 respectively.

and important of all is a PIC micro controller programmer, for this u can either buy one locally or from USA or build your own,
JDM 2 ( serial port ) is a very good programmer, i have built it and works plus easy to set up!!!, try Google for it and if u guys need any help programming or setting up the software let me know (PM or mail)

here is a commercial programmer i got from USA ( USB port ), look for k 128 kit

http://www.ozitronics.com/

if u feel this is getting to messy for you, i can program the chip and send it for free of charge !!! ( just programming )
rest you  guys can build.

see the youtube video, note the video was take in setup 1 and weighed 19gram and here are some pictures

also building the 12c50XA version saves lot of weight,size,time n money and can be built under 4-5 grams weight  :thumbsup:

http://www.youtube.com/watch?v=K96gaeUr-CE&feature=player_embedded

okay guys here i go, 20 V-tails mixers built log  :'(  ;D and i will start building from tomorrow every evenings an hour till i finish the stuff, i still need to get a crimping tool and shrink tube for the board !



 

update, got the crimping tool and started building 1st unit

 <7grams weight okay

All the best! We are all anxiously waiting for them............

VC

Best of luck
please keep us updated!!

-ANkur

okay guys this is how a finished unit will look like and now since i have a layout to work with i think by two or three evenings all the stuff should be done  8-)

the mixer weight 6 grams +- 1g, 3 inch extensions with 26swg wires !

Great :thumbsup:

Any plans to shrink wrap it (I guess you will need to cut out a window for the DIP switches) ?

yes but its up to the user, i did buy the required shrink tube!

shrink wrap version  :)

i need the shrink wrap[covered ] version :)

Shrink wrap for me too. Will pay extra for all your efforts!

 :thumbsup:

VC

actually i will make all the units with shrink wrap cover!

i think that will be better
will it provide protection by the way as i donno for what is it?

It protects from short circuits, any weather issues, and fuel/oil in case of nitro models (depending on where they are used).

ok anwar bhaiya thanks for help
then i'll take with it will pay  extra if required :)

i m waiting ,

BTW thanks for updating us

finished making the connectors

started work on the PCBs

update

Sale Sale Sale..Sale lage Hai
Ate Jaaoo... Lete Jaaoo
raste ka maal Saste main....
 {:)} {:)} {:)} {:)} {:)}
 :bow: :bow: :bow: :bow:
 :thumbsup: :thumbsup: :thumbsup: :thumbsup:
 (:|~ (:|~ (:|~ (:|~

:giggle: :giggle: :giggle:

i m so excited ... :) ;) ;D >:( :( :o ??? 8-) :P :'( >:D (:|~ {:)} :headscratch: :salute: :help: :banghead: :thumbsup: :giggle: :bow: :D 8) :-[ :-X :-* :violent: :sleepy: :argue: :discuss: :thumbsdown:

update, almost done with the mixers only programming an testing left  :)

great job Sahil... :salute: :bow:

Oh how much i wish i could learn to program a micro-controller :'(..

it's as simple as burning a blank CD with data

WHAT!!!!!!!!!!!!! Your programming and testing is still left and you have made so much of devices.....what if something goes wrong..........??

relax the code has already been tested, i meant burn the chips and test the final units

PS: i have already tested one unit and it's working (shrink wrap version earlier post)

sahil

After completion, Do you have plan of selling them in market ???

Hi sahil,

Do you know any "DIY Electronics" Indian forum?

yeah there are couple of Ham radio sites and this one is very good

http://www.roboticsindia.com/

http://www.roboticsindia.com/forum.php

the present stuff are for few members and as things stand i have no interest in commercial sales! just trying to help fellow members :)

but if u need any help let me know!

sahil

guys all the mixers should be ready by tomorrow and update about final pricing including shipping charges (DTDC)

sahil

waiting  ;D ;D ;D ;D ;D ;D ;D

guys slight change in plans, i will be going to Chennai tomorrow morning (staying at IITM) for a day so i guess the 1st batch will go to ramjin!

sahil

 ;)   The Lucky me,

 ;D  Off Course,  i had been checking daily, so not miss the updates on this V tail mixer... I'll Personally pick it up from you..
 :salute:

Thank you
Ramkumar G

Final note:

this V-tail mixer has 4 modes of operation in which one can select the percentage of mixing between channels 1,2

switch 1    2    channel 1       2  (servo travel is given in percentage to radio stick movement)

      off    off      100%        100%
      off     on     100%         50%
      on    off      50%          100%
      on     on      50%          50%

please see the picture on how to connect the servo to the mixer and the black plastic casing will not directly plug to the receiver it either has to be replaced with proper servo casing or trim the units to fit the receiver!

sahil

servo connector plug wiring details ( receiver side )

are all sold?

Damn.. thats cool! If you still have any I would like one as I have a Futaba Skysport 4VF with no mixing..

Sahilkit, any further developments on this? planning to build and sell some more? Did you receive feedback on the 20pcs that you made?

They work very well and are much more than "value for money". 5 stars!

was wanting to have a couple of them....

For brushed or brush-less-ESC with built-in 5volt BEC and putting out more that 5.5volts or 5.5volts please insert a diode in series with positive wire or red color wire ! see picture or better use an extension with above modification.

Please note: V-tail mixer will not work at 5.5volts because the programing/verification/fuse were tested for 5volts operation only!

V.C has reported that the V-tail mixer is not functioning at 5.5volts (thanks for pointing out)!

sahil

Has anyone etched a board for this mixer?
I'd like to build some of these boards but the lack of an etched side of the board is holding me back.

   John

can any one plz tell me why using the jumpers??
are the jumpers meant to be 2 pin dip switch?

Hello Trishul

yes the jumper is a 2pin dip switch and these are used to set the servo mix. see post 37

Sir could you make a brushed esc ?

yes but they are available at low prices now. May be micro brushed esc for planes  :)

Sahil

the programming can't be done.... i am using pic16f84a with conventional jdm programmer and win pic but it is showing error while verifying the hex file... i am using the same set up as described in "philip sun" site...
plzzzz give me some suggestion .....  :help:

can you post more info and in the meantime check your fuse settings

16F84A : OSC= XT,  WDT= ENABLE,  PWRT= ENABLE ,  CP= BLANK(DISABLE)

yeah i am trying it from first time.... but no luck.... the "winpic" is showing the error in the code..

trishul can you conform if the ic is working with different code like a led blinker hex? by any chance you enabled code protect at the time of burning the code ?. Let me dig up the one i built and get back.

Can you post a screen shot of error message. Post some pictures of your setup.

Sahil

the jdm2 programmer i built has option to select b/w pic16 or 24XX, yours selected correctly?

yeah i tried it again...no luck.... :banghead:.... i will post the screen shots tomorrow....

this is what i have used and try ic-prog

http://197.14.51.10:81/pmb/ELECTRONIQUE/mise%20a%20jour/Microcontroller/How%20to%20build%20your%20own%20PIC-Programmer.pdf

http://www.ic-prog.com/

Edit: so the programmer is working fine ? and the ic too ? but just not with this code ?

i think so... because in the time of verification of ic the programmer is is working fine and it also recognising the pic.... but during programming the first two lines of hex file is becoming red...

hey do you still build the V tail mixers?
If yes then i would like to buy 5..
if no then please can you give me the circuit diagrams?
Thanks

see post 1 (all the info is there)

Sahil

http://ilufa.orgfree.com/MIXER_E.htm

can i use this PIC12F508

and can I use "USB 2.0 to UART TTL 5PIN Connector Module Serial Converter CP2102" for programming? If yes then how?
link : http://www.amazon.in/REES52-Module-Serial-Converter-Replace/dp/B01I6MXWV2?tag=googinhydr18418-21&tag=googinkenshoo-21&ascsubtag=6a9b81b0-bb88-4d55-8b48-4b024f4ba2b2

Hello, I have made the etching design for this V-tail Mixer, Would be happy to share with you all. ;) Please correct me if I am wrong.

IF you already have rs232 pic programmer and need/use USB then it will work otherwise NO.

Should work but check your fuse settings and don't burn code with one time write.  :)