LED Cannon Flash
 

Did you know you can wire a Super bright LED to two pins on the Heng Long ESC and get a cannon flash when you push the K button. That is what I did on my Pershing this week.

Thanks to Dougs Tiger parts website and contributor Joseph Canestrari

[link=http://www.dougstigerparts.com/led_cannon_flash.htm]DougsTigerPart[/link]

Simple little project

RE: SNFF 0217
 

Here is a picture of where to attach the cannon flash if you do not have a fine soldering iron to get to the small location that Doug and Joseph recommend! You can follow the trace out as I have done and am showing in the picture below! This is a much easier and stronger solder ATTACHMENT POINT! Oh and be sure and add a 100 ohm resistor to the positive side of the LED IMO if you want to retain the cannon blast sound!

The Blitz[sm=shades_smile.gif]

RE: SNFF 0217
 

You didn't like my SNFF post? :D

RE: SNFF 0217
 

?????????

:DDidn't see it:D

Do you already start one??????

RE: SNFF 0217
 

No problem, I would have missed it too! So many posts it went to the 2nd page.

RE: SNFF 0217
 

My first time posting a message on the forum but have been enjoying reading the discussions for well over a year. Breaking the "silence" as the posted diagram is perfect for what I want to do w/ my bulldog but I can't seem to figure where the solder points are on the pic and which is for +ve or -ve. I'm also guessing that that's a rx14 board? Many thanks!

RE: SNFF 0217
 

I never took a close look at Blitz's picture. I worked off the one from Dougs Tiger parts, it shows the RX 13. Follow that link to see if it helps you out.

RE: SNFF 0217
 

Blitzkidd,

Both pictures are of the RX-13 board, the Blue wire is the positive and the white wire is the negative, you can compare with the post YHR is refferring to and you just follow the trace out from where they are showing to solder the wires my points are MUCH easier to attach too and will not ruin your sound card if you can't solder that fine of solder like the other link is showing!

The Blitz

RE: SNFF 0217
 

i too have modded all my tanks with bright yellow 5mm LEDs for muzzle flash (2 tigers, 1 pershing and 1 bulldog ) the rx-13 boards have a track lead out to a pad which makes for easy soldering of the +feed but the rx-14 boards dont have a track lead out so you have to VERY CAREFULLY solder your wire onto the board. i only used a 27 ohm resistor in the positive lead to limit the LED current drain so it should last longer it did not seem to effect the main gun sound.
i also fitted the metal machine guns to the hull and mantles of the tanks but used 3mm high brightness LEDs in yellow not red!!!!!
on the bulldog was able to fit a 3mm LED into the 50 cal machine gun for the commander to fire.

RE: SNFF 0217
 

Cool Lonewolf, dang it why didn't I think of using the little yellow for the machine gun also, duh! Hmm maybe add yellow to the red, now we are talking??? 27 ohm should be fine, but my cannon shot is tied to DBC/DBU (IR Battle System) which produces its own sound and draws from the Heng Long boards so I did not want to drain that part of the circuit, and the mix is working well!

The Blitz

RE: SNFF 0217
 

to save you the trouble MAPLINS do sunset orange 3mm LEDS but i found them still to be rather on the reddish side so opted for the yellow instead, i must admit reading some of the threads you guys turn out some really good tanks, what with weathering and the like they look ace. not to keen on some of the BATTLE DAMAGE some of you do, but each to there own if you enjoy it why not.
i will put some piccies of my tanks on when i have had a go at weathering, thanks to one of your threads. and my son comes back off his holidays with my digital camera............ it appears thats what dads are for.

RE: SNFF 0217
 

Each tank I do, I am learning and trying something a little different, I won't battle damage (OnMy Tiger my daughter said" Why did you mess up the new tank" :D) or weather each tank, I want to show case something different on each one! What a great hobby, there is always something new to try and to learn, I am far from being burnt out, or ran out of ideas, experiments or improvements!

The Blitz

RE: LED Cannon Flash
 

Does anyone have a picture of where to solder the wires for machine gun fire? [:o] I want to have both of the MGs that I'm going to install in my PZIV (comes with no LED MG fire) firing independently, but I guess I may have to settle for them both firing together. Any help would be greatly appreciated!

RE: LED Cannon Flash
 

If you look at the mini board on the upper hull, there will be a blank solder pad - well, one wire leading to it and nothing coming out the other side.

It might be easier to trace it from the 8-pin connector itself:

http://members.iinet.net.au/~wackywh..._8pin_plug.jpg

You will have to figure out which version of the above you have (1 or 2), as a tip the red and black on one end are always turret rotation, even if the colours vary the placement remains the same as shown. You want pins 6 and 8

RE: LED Cannon Flash
 

Hi Guys ok superbright l.e.d.s what voltage and which is the best colour have seen a colour sunset orange would this be good


regards pete

RE: LED Cannon Flash
 

Thank you, Wackywheelz! [sm=teeth_smile.gif]

RE: LED Cannon Flash
 

for the 3mm LED which i put into the metal machine guns to replace the red ones already fitted into them, i got mine from welsh dragon models off e-bay about £8 per gun. but they look real cool. the Voltage is 5volts 50Ma yellow part No N32BY from MAPLINS in the uk, online ordered. i also put a 27 Ohm resistor inline with it to limit current drain so it does not burn the LED out.
The muzzle flash LED was a 5mm hi-brightness yellow one part No N71AJ which is 5volts 20Ma yet again with a inline resistor of 27 Ohm to limit current drain. all were ordered online from MAPLINS off there website.
i tried the sunset orange but found it to be not as bright and still on the red side so opted for the yellow.
if you do the machine gun mod get some clear plastic rod about 1mm diameter from your local model shop and replace the one which is in the gun barrel making sure it goes right into the barrel and touchs the LED in the body to get maximum light transfer.

hope this is some help....................

RE: LED Cannon Flash
 

Thanks lonewolf thats the best for long time from you electromagicians is it a dark art this stuffing electrons up solid pipes because you dont like parting with with the secrets a bit like the magic circle why cant all of you electromagicians follow lonewolf and put it in simple terms like this instead of baffling us with omhs amps diodes capacitors and such like just say what we got to do in plan english to make it work and you can keep your secrets safe.

thanks again lonewolf regards pete

RE: SNFF 0217
 

Thanks The Blitz, that clears things up for me quite a bit. I'll try this out on my tiger which has the rx13 board but too bad my bulldog has a rx14 board, can't risk frying it using my ultra large soldering tip and me steadyyy hands. [sm=bananahead.gif] Gives me a chance to tinker w/ the airsoft gun channel to initiate a muzzle flash + trigger a separate sound board w/ better cannon blast sound than that squeek from the HL board. Perhaps there's a way to also work in a small jolt to the tank and "smoking gun" w/o pressing the infamous "K" button :D:D:D

RE: LED Cannon Flash
 

;)Hi YHR,

A qustion for you........if you can wire up an LED to flash when you push the 'K' button, could you use the attachment points to wire in a tamiya recoil unit too?.......might mean losing the airsoft function but would be cool.............

Cheers

CaptB

RE: LED Cannon Flash
 

I am not the guy to ask about that, but have asked the same kind of question in another post. I just followed directions when doing this. Darkith might know. I am guessing this might work as a trigger to run another electric circuit to supply power to a recoil unit. I'll be as interested as you if someone has the answer.

RE: LED Cannon Flash
 

;)yep.....must be possible......any electromagicians out there care to comment please?........

Cheers

Captb

RE: LED Cannon Flash
 

Can't see why not, so long as you use a separate driver (e.g. FET). If there's enough current to light up an LED, it should be trigger the FET, which drives the motor.
I assume the Tamiya recoil unit, once trigger, runs until it hits a switch which turns it off again? If so, the pulse from the FET would hopefully be enough to start it moving and then it would take care of itself.

Don't have a Tamiya with a recoil unit (an issue I'd like to rectify some day soon...) :)

D.

RE: LED Cannon Flash
 

i have seen a circuit before but not had time to try it yet, have tried to attach it hope it works

RE: LED Cannon Flash
 

you could also mod this circuit to operate a relay, say double pole single throw to cut the feed to the motors which would stop the dreaded HENG LONG JERK ! also you could activate a sound generator to give a better main gun sound with lots of volume.
have tried the sound generator idea but cannot get the sound generator to work properly with an amplifier.
will keep trying though, keeps the old grey matter going which is what i like about this hobby.