How to use a momentary switch with a latching sound board.

[Mersenne]

Man I can't believe I used a JK FlipFlop on my sbaers to achieve this, as this way is way smaller
I've checked out a few keyring LEDs that I have and they are all dodgey like - basically the battery inbetween the legs of the LED and uses pressure to light it. Off to source these type of keyrings
thanks for posting this eastern57

[eastern57]

you're welcome.

[Mersenne]

Anyone found them on fleebay?
Shipping quote is a little too high from the provided links
I've contacted a few sellers and they reckon that theirs all are just battery and LED

[LUMINARA UNDULI]

Try this http://www.dealextreme.com/details.dx/sku.16510 I believe worldwide shipping is free

[Mersenne]

Try this http://www.dealextreme.com/details.dx/sku.16510 I believe worldwide shipping is free

thanks
I'm going to give them a go

[General Veers]

I didn't even know this was possible!  Nice tutorial.  Maybe I'll try it someday!

[Mersenne]

Well I went to order some keychain LEDs, but got side tracked with cleaning the garage.
During the clean, I came across some of those meal toys kids get from those fast-food joints and noticed it had a rubber push button on it........................
so I gutted it and found this.

(no I'm not cruel by pulling them apart, we have a friend that gives us all the left over one's, once that promotion is over)

the measurements are in centimetres, just thought I'd post what I found too, might save a few extra $$ here and there
(tested the same as the lightsound keychain light - mom switch, -ve for the board and 2 switch wires)

[cannibal869]

OMG *$(&#! that central solder point where the momentary switch goes (the one that is covered by the metal plate) - MAN that thing is SUPER hard to solder without getting some on the side...  I think I messed up at least 2 of those boards tonight trying to do it.

[Delmustator]

Installed mine without any issues. I'll try to get some pics up later today.

Note: A little solder paste makes it simple on those small solder points.. Try some...

[cannibal869]

Installed mine without any issues. I'll try to get some pics up later today.

Note: A little solder paste makes it simple on those small solder points.. Try some...

Wow man... can't believe I never thought of that. That would have made my life sooooo much easier....


Thanks!

[Delmustator]

This is the little mod (what we call a daughterboard) attached to a MR jedi sound board.



I still need to tap some power off the daughterboard to power the green led in the push button switch when the saber is on. Once that is done, I'll hot melt glue the daughterboard to the MR board. Gotta order some more micro connectors. I ran out.... 

[cannibal869]

This is the little mod (what we call a daughterboard) attached to a MR jedi sound board.



I still need to tap some power off the daughterboard to power the green led in the push button switch when the saber is on. Once that is done, I'll hot melt glue the daughterboard to the MR board. Gotta order some more micro connectors. I ran out.... 

Excellent!  The solder paste thing worked like a charm! 
And I have my daughterboard mounted onto a Yoda sound board basically the same exact way.
As for the power to the accent LED, why not do something like this?

(taken from this thread over at TCSS) http://forums.thecustomsabershop.com/showthread.php?t=1023&highlight=wire+accent+board&page=2

-C

[jock109]

Can any of you lovely people clarify something for me please regarding this lighthound thing.

Do they (the keychain light) operate via a single press on then single press off or is it something different? I get the feeling I am missing something here 

[QUI-GON JINN]

Can any of you lovely people clarify something for me please regarding this lighthound thing.

Do they (the keychain light) operate via a single press on then single press off or is it something different? I get the feeling I am missing something here 

no you're getting it all right.  You press it once,  and the light stays on,  and then press it again to turn it off.  The way it gets wired makes the keychain light act as a latching switch for running an MR board so you can use a momentary switch like say,  a mini-tactile to operate the saber.

[jock109]

Thanks Qui-Gon thats what i thought, just cant find a keychain light in the UK that operates in that manner, they all seem to be press and hold.