122 lines
6.4 KiB
Plaintext
122 lines
6.4 KiB
Plaintext
Delay Detonator
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This phile shows how to build a simple electronic delay detonator for
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almost any type of bomb that uses fire to detonate. This detonator can also
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be modified to activate blasting caps for detonating Plastique etc. All of
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the parts are easily available at Radio Shack or other electronic stores. One
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drawback of this detonator is that it costs about $10 in parts to make one. But if you
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are rich or if you need more of a delay than a fuse can provide, this'll do
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the trick.
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Parts List: Part # R.S. Cat. # Cost
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2 Switching Diodes (1N914) 276-1122 $0.99
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10K Resistor 271-034 $0.19
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Relay Switch (6V) 275-004 $2.99
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IC Timer 555 276-1723 $1.19
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Mini LED 276-059 $0.99
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Electrolytic capacitor (Size depends on delay desired)
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Resistor (Size depends on delay desired) $0.19
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Push button switch (any model)
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2 9-Volt Batteries (Cheap, but new ones)
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Small piece of breadboard approx $1.00
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24 gauge solid core insulated wire
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Soldering tools
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Solar Igniters (electric matches available at hobby stores)
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Mini Alligator clips (roach clips)
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*** NOTE: Any SPDT 6 volt, 500 ohm, 12 mA relay can be used
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instead of #275-004. Especially because #275-004
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takes up a lot of room on the board.
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*** NOTE: Many of the parts are sold in sets and you will
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only need one. So, if you build more than one
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detonator, you won't have to buy more of some
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parts.
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Schematic Diagram of Circuit. (solder everything on breadboard)
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9 volt +
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/|\ For values of R1 and C1 see notes
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__________________|____________________ at the end of this phile.
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| | | |
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| ____|8_______|4____ |
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\ | | | D1
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/ R1 | |3__________|\|_______o R x______________
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\ | | |/| | E |
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/ | 5 5 5 | | | o L x________ |
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| | | \ | | A | - |
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| | Integrated | / R2 | | Y | -----
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|____________7| Circuit | \ _|__ | LED --- 9
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| | | / /\ | | + | v
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|____________6| |2___| D2 /__\ | | | o
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| | | | | | A | l
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| |___________________| | |____| | | t
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| |1 |5 --- | | |
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| C1 | | --- Switch | |_____|
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|_______| (______|______|______________|___________|
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+ | A= Alligator
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----- R2=10K ohms Clips
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---
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- Ground (-) ** note: no connection between pins
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3 & 4.
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The bottom of the relay has five pins. The pins here are marked with an
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"x" or an "o" corresponding to the schematic:
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____________________
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| x o | RELAY SWITCH
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| | (bottom base)
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| N o x | N= not used
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|___________________ |
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The alligator clips should be attached to the breadboard using short
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pieces of wire.
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The longer lead on the LED is the positive lead. Make sure you hook it
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up with the right polarity. Same rule goes for the capacitor.
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The pins on the 555 IC are numbered from the top (side with paint & notch).
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On the left side the read DOWN as 1,2,3,4. On the right side the read DOWN
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8,7,6,5.
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TEST
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Attach the two batteries and clip roach clips together, the LED will light.
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Press and hold the switch for 3 seconds. You should hear a click then the
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LED will go out. In a little while (depending on what capacitor and resis-
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tor size you use), you should hear another click and the LED will turn on
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again. If this doesn't happen, you phucked up! Check your circuit care-
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fully.
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USING DETONATOR
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**** Read these instructions carefully before attempting this ****
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If the TEST worked, the timer is ready to use. Attach two fresh batteries
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and connect the two roach clips. Allow time equivalent to your delay for
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the capactitor to charge. Now, press the switch until the LED goes out.
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Now, quickly but carefully attach the roach clips to the Solar Igniter that
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has been previously attached to your bomb. Then, get the phuck out of
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there!!! Once the time delay expires, the relay will open completing the
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second circuit and igniting the Solar Igniter.
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Tech Note: The values of R1 and C1 determine the time delay. The greater these
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values, the longer the delay. The equation to determine time delay
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is as follows:
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C1 (in farads) x R1 (in ohms)
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Time (in seconds) = ---------------------------------
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6
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The value of C1 is in farads. Most capacitors are listed in micro-
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farads. To use the formula, divide the number of microfarads by
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1,000,000.
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Example: If you use a 500 microfarad capacitor for C1 and a 10
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megaohm resistor for R1, you would have a delay of 14
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minutes (833 seconds).
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DOWNLOADED FROM P-80 SYSTEMS 304-744-2253
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