Help Needed with SCUBA Light Switch Circuit

Hi Boncuk,

I finally got round to building a test bed with all components of your original circuit (without the 1uF capacitor you recommended recently).

I'm using 2 LED modules, similar to what I will be using in the finished torch.

On applying the battery pack both LEDs immediately come on.
Then LED 1 only (pin 2 from the flip flop)
Then LED 2 only (pin 14 flip flop)
Then both on again

There is no 'both-off' in the switching sequence

This 3-part sequence continues with each momentary switch

I then introduced a 2u2 tantalum capacitor (I don't have a 1uF on hand) as in your ammended suggestion and nothing worked

No damage, as when I removed it was back to the 3-part sequence again.

Obviously we need to be able to have a both-off as there's only one momentary piezo switch on the torch

Can you advise please?

Klem

Bon Bon sure is a nice fella isn't he ? Way to go Bonman

Klem do you do night diving that requires the lamp? I only night dived once and I did not like it, I felt trapped in a box. Scared the crap out of me.

Have you seen the dive mask with lamps built in? one on each side of the head, They look very cool. I suppose the cost is high though.

Mikebits,

I like diving at night. makes a welcome change. We catch prawns here off the coast and in the river and also diffeerent fish come out at night. as long as you have a main spotlight and a back-up 'instrument' light (usually a small one hanging on side of facemask) there's no probs.

I find it quite peaceful actually

Listen, if you can provide someadvice on this earlier circuit diagram Boncuk sent would be most appreciated. just looking for someone to explain to a neandathal like me why there is no 'off' setting in the sequence with my rendering of his 4027 flip flop diagram.

cheers

Klem

Klemheist

I am building a dive light using 4 Cree r2s, aspheric lens and a Kaidomain P7 2.8 amp driver, I want to use the same piezo switch I used with the Genie,
Just a simple on and off can you describe a simple circuit for that use.

I suggested an idea in another waterproof switch thread. Get a normal small toggle (lever) switch. Then glue a lead sinker to the lever. Then a good hard bump in either direction will turn it on/off. Incredibly simple, can be used inside a totally hard pressure-proof torch casing, and uses no power when not turned on.

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