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Anyone know how to make Dynamite sticks?

here is the inside of the failed stick...
it is corroded so I guess that's why it failed. It wasn't sealed too good.

I bought some new ones that are "Shelby Certified" whatever that means. They are better looking quality from the outside.
 
Man, that's beat. Looks like they passed the CAT scan, regardless. :lol

I still have the stuff for these things under my workbench...I'll make some, eventually. :lol
 
"gotstang" said:
Man, that's beat. Looks like they passed the CAT scan, regardless. :lol
Click to expand...
YES they had a thorough CAT scan!

No hurry on making some, I finally got tired of having one tail light blink sequentially and the other normal and bought some more. My wife would just not let me drive on the Hot Rod Power tour like that! :craz
 
"Grabber70Mach" said:
Come on Criag that will buss right out. :sur :lol
Click to expand...

You might be surprised - I've taken a toothbrush to clean lots of electronics that got wet. Get rid of the corrosion & dirt, and often they will work again.
 
"tarafied1" said:
now ya tell me! JK I will try it :$$$
Click to expand...

It might work - either the corrosion is shorting something out, it has corroded away a connection, or the corrosion stressed something and the smoke came out.

Procedure for the firat & second - clean, dry, examine for bad solder, copper breaks, broken wires Fix breaks as needed. Try

The third is deadly unless you want to tackle component replacement. Usually this one requires special tool #1, which you have already deployed.
 
Hey Folks,

Hate to resurrect an old thread - just attempted this for my self. I built it out on a breadboard ahead of time, and am testing it using some 12V led's currently (although I will be using halogen reverse lights). I have followed the perfected schematic, and am having a weird situation occur, which you might be able to help me figure out.

I am using the 556 timer as stated, and what happens is when I provide power, my #1 light (which is not involved in timing at all) turns on as normally, and there is a delay in 2nd light powering on, and then the 3rd and 2nd lights occilate on and off (when 2nd is on, 3rd is off, when 3rd is on, 2nd is off), and they continue to flash like this, although the power source is constant. I hooked up only half of the circuit (so using one half of the 556 - so it acted as a single 555 timer) and the light being powered comes on as it should, with the delay set by the 100k pot i have used. I have played with the pots, and i have also replaced the pots with 100k resistors, same issue! The pots are changing the timing, however the lights should not be flicking off and on, as the power source is constant.

I've attached a video, please check it out so you can see what is happening, and maybe you can help me figure this out before i build this on a circuitboard.

Thanks folks!

-Mark
 
It appears to me that your system is not shutting off number 1 light to run the three light sequence. It is leaving number 1 light on steady and performing the sequencing with number 2 and 3 lights. Now, I have no idea how to fix it.
 
Hey There,

I should probably clarify this is being hooked up OUTSIDE of the car, to a constant 12V source, not to an electronic or mechanical flasher. Therefore #1 should be staying on, and so should #2 and #3 (there should be no flicker whatsoever, nor should the pattern of #2 on - #3 off or vice versa be going on).

It should turn sequence as such:

#1 on #2 off #3 off
#1 on #2 on #3 off
#1 on #2 on #3 on

and then stay like that until power is reset (by a flasher) or in the case of pushing on the brakes, i let off the brakes.

Sorry, I should've clarified there was no flasher in my current set up, it should function correctly however the way it is hooked up!

Thanks for the response, any more help is greatly appreciated.
 
My knee-jerk reaction is that your problem is the lack of a flasher. The flasher unit effectively applies and removes power to the timer IC, resetting it. With the flasher in place, it should function same as the original.

So, after *briefly* turning my brain back on, it looks like you're on the right track in the post above. :lol

I bet if you switched your power supply off/on every second or so (half-arse simulating a flasher) it will work fine. I dunno about replacing the pots with resistors though, this circuit seems sensitive enough to variances that the 5% tolerance of the resistor could have both sides flashing at different rates. I kicked around the same idea and decided to stick with the pots for safety's sake.
 
Hey There,

Thanks for the reply. Well that doesn't seem to work, as the capacitors i believe still contain some energy, so if i shut it off and quickly turn it back on, the led's light up with a shorter inital delay then they should, as the capacitors haven't been drained.

I originally built it with 100k pot's and then switched to resistors just to see if that helped. Unfortunately it will not work if hooked up to a flasher, as they are not acting sequentially, lights 2 and 3 are flickering back and fourth. Furthermore, that means if I hooked this up and pushed on the brakes, my brakes would be flashing.....and you see where i am going there.

Did you make any modifications to the design at all? I have followed the final schematic, and will be taking a picture of the parts in the next day or so to show what I am using

Thanks again!
 
"Rubedizzle" said:
Hey Folks,

Hate to resurrect an old thread - just attempted this for my self. I built it out on a breadboard ahead of time, and am testing it using some 12V led's currently (although I will be using halogen reverse lights). I have followed the perfected schematic, and am having a weird situation occur, which you might be able to help me figure out.

I am using the 556 timer as stated, and what happens is when I provide power, my #1 light (which is not involved in timing at all) turns on as normally, and there is a delay in 2nd light powering on, and then the 3rd and 2nd lights occilate on and off (when 2nd is on, 3rd is off, when 3rd is on, 2nd is off), and they continue to flash like this, although the power source is constant. I hooked up only half of the circuit (so using one half of the 556 - so it acted as a single 555 timer) and the light being powered comes on as it should, with the delay set by the 100k pot i have used. I have played with the pots, and i have also replaced the pots with 100k resistors, same issue! The pots are changing the timing, however the lights should not be flicking off and on, as the power source is constant.

I've attached a video, please check it out so you can see what is happening, and maybe you can help me figure this out before i build this on a circuitboard.

Thanks folks!

-Mark
Click to expand...

Your timer is running in astable mode. 555 timers can run in one-shot or astable mode. Astable mode is an oscillator - just like your lights are doing. To run the light sequence correctly, you need one shot (ie, the timer runs the timing once, and holds the lights on until the power goes off). More info here:
http://www.sentex.ca/~mec1995/gadgets/555/555.html

Quadruple check everything - it's easy to get a wrong connection on a breadboard, or wires touching. It's also possible that you have some feedback due to inductive coupling (especially if you used cmos versions of the 556). If all else fails, tear it apart and build it again - but route the components differently.
 
Well I think i figured it out - There is an error in the schematic posted by gotstang:

The reset pins of the 556 should not be directly connected to +12V, but instead should be connected to the 1K resister for each mosfet - Between the 556 timer and the resister. This allows the timer to run in monostable mode - hence resolving the issue I had.

Here is a diagram of a 555 (556 is two 555 timers together), and shows what i am talking about, and how I figured it out.

Will let you know how it all turns out after it's soldered up and installed!
 
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