Electronic Ignition for bangers. - Electronic Circuits Projects Diagrams Free

bitem2k · 14th May 2007, 01:43 PM

Im trying to make an electronic ignition device out of a disposable camera.
My goal is to ignite a banger that is about 5m away at the end of a wire.

Ive got it all wired up ok, but when i attach the unit to a long wire (cat5 pair) , and press the fire button, A spark occurs at the button, and the ematch at the end of the wire does not fire.

If I attach the ematch without the long wire, the ematch fires perfectly.

I have wired the capacitor up to a button and output terminals, so that when the button is pressed the output terminals receive the voltage stored in the capacitor (NB output terminals are connected directly to the capacitor via a button).

Does any one have an ideas?

thanks very much

ericgibbs · 14th May 2007, 02:05 PM

Hi,
It sounds as though the resistance of the Cat5 wire is too high and you are losing current/energy for the spark in the wire.

Try thicker wire.

bitem2k · 14th May 2007, 02:08 PM

ah, is that what the problem is?
This one has been doing my head in, thanks mate.

**3v0** · 14th May 2007, 02:40 PM

Electronic ignition on a sussage ?

Yummy

bitem2k · 14th May 2007, 02:59 PM

Quote:

Originally Posted by ericgibbs

Hi,
It sounds as though the resistance of the Cat5 wire is too high and you are losing current/energy for the spark in the wire.

Try thicker wire.

Eric, your a genious!
Went to b&q, bought thicker wire, BANG!

nice one mate, thanks again.

Sceadwian · 16th May 2007, 06:44 AM

Why buy thicker wire? It's CAT5, and you're only using a pair, what about the other three pairs? all those wires added toether and you have the equivilant to 15 gauge wire. If you need hot and neutral it's the same as two 18 gauge wires. Per Cat5 run.
P.S. Cat3 is MUCH easier to work with and more useful to the hobbiest as it doesn't have as many turns to deal with. The extra turns in the pairs of wires on Cat5 is only useful to high speed (Greater than 10BT) communcation runs at high distances.

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14th May 2007, 01:43 PM	(permalink)
bitem2k	Electronic Ignition for bangers. Im trying to make an electronic ignition device out of a disposable camera. My goal is to ignite a banger that is about 5m away at the end of a wire. Ive got it all wired up ok, but when i attach the unit to a long wire (cat5 pair) , and press the fire button, A spark occurs at the button, and the ematch at the end of the wire does not fire. If I attach the ematch without the long wire, the ematch fires perfectly. I have wired the capacitor up to a button and output terminals, so that when the button is pressed the output terminals receive the voltage stored in the capacitor (NB output terminals are connected directly to the capacitor via a button). Does any one have an ideas? thanks very much

14th May 2007, 02:05 PM	(permalink)
ericgibbs	Hi, It sounds as though the resistance of the Cat5 wire is too high and you are losing current/energy for the spark in the wire. Try thicker wire. __________________ Eric "Good enough is Perfect" PIC tutorials: Gramo's: www.digital-diy.net/ Bill's: www.blueroomelectronics.com/

14th May 2007, 02:08 PM	(permalink)
bitem2k	ah, is that what the problem is? This one has been doing my head in, thanks mate.

14th May 2007, 02:40 PM	(permalink)
3v0	Electronic ignition on a sussage ? Yummy __________________ search engine for electronic parts Junebug USB PIC programmer kit., USB Bit Wacker, 3v0's Homepage The 15 Minute Printed Circuit Board! (+drill time)

16th May 2007, 06:44 AM	(permalink)
Sceadwian	Why buy thicker wire? It's CAT5, and you're only using a pair, what about the other three pairs? all those wires added toether and you have the equivilant to 15 gauge wire. If you need hot and neutral it's the same as two 18 gauge wires. Per Cat5 run. P.S. Cat3 is MUCH easier to work with and more useful to the hobbiest as it doesn't have as many turns to deal with. The extra turns in the pairs of wires on Cat5 is only useful to high speed (Greater than 10BT) communcation runs at high distances. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."