(on)-on-(on) switch

[banana_man]

Hi all,
I was wondering if anyone knew where I could get an '(on)-on-(on)' switch. In simpler terms, that is a swich with three on positions, no off, and that spring returns to the centre. I have found one on Farnell, but I don't think I have a large enough order to justify the postage at the moment.
Thanks in advance,
Alex Sainsbury

[calumco]

Re: (on)-on-(on) switch

you can get them from maplins i think

[banana_man]

Re: (on)-on-(on) switch

I've had a look, but I don't think they sell this kind of switch on the maplin site. Thanks anyway for your help

[muchalucha]

Re: (on)-on-(on) switch

as i said on msn , you will need 2 spst (any momentary switch really) momentary switches next to each other , the common can be wired togethor and connected to where the middle pin on the pot would go inside the tx , the other 2 connections on each switch shoudl e wired to the outer 2 terminalos , this will mean when neither is click t wsill stay still , and when one is clicked it will go forwards and when the other is clicked it will go backwards. you will need to use something like a modified servo as a flipper .

[banana_man]

Re: (on)-on-(on) switch

Hi Tom, I have gone over the setup with Scott, who has done it before, and he says that the best bet is to use some form of on-on-on switch. I cannot use any switch with an off, as I need to activate different value resistors to fool the TX into thinking it has a pot attached. The circuit, drawn by Scott is here:[attachment=0:3vvfzt5z]SimpleSwitch.png[/attachment:3vvfzt5z] this is for a 5k pot

[woody]

Re: (on)-on-(on) switch

http://www.rcgroups.com/forums/showthread.php?t=1124586

[botmad]

Re: (on)-on-(on) switch

PM Sent ...
Whats the intended use ???????

[banana_man]

Re: (on)-on-(on) switch

Pete, the intended use is to replace a stick channel, in this case the throttle, with a three position switch giving full forwards, stopped and full backwards signals to a motor and esc.
Thanks everyone for your help