switch

is there anyway i can make something turn on when i open a box without it beiong on constantly to check if it is open? 

the box opens sort of like a hinge but there is nothing that touches when open that doesn't touch when closed

thanks :)

 

Thanks a lot for the support you people showed last time. I want to make a circuit which has 2 LEDs and a normal on/off switch (at least) and other components as required. The circuit should function like this- When i turn the switch on for the 1st time, LED 1 glows but LED 2 remains switched off. When i turn the switch off for the 1st time, both LED 1 and 2 remain off. When i turn the switch on for the 2nd time, LED 2 glows but LED 1 remains switched off. When i turn the switch off for the 2nd time, both LED 1 and 2 remain off. Please provide me with a circuit diagarm for the same and

Is there some way to make an on/off switch using a momentary push button? I think the buttons feel more natural. They are smaller too. Just wonderin'...

Here is the top of the switch asembeley:

 

Here are the pins:

 

Sorry it is blurry but you get the idea.

I Have my very first robot posted on LMR and he's pretty cool except whet he gets a blind spot on his Parallax PING)) sensors and hits a wall, burning the motors and wheels. I'm really really naive when it comes to programing, i know only how to understand programs people have written before for arduino. I do know tons about non- programmed electronics, though. I want to add something like bump switches to my code. I don't know how! assistance requested. My robot is Makerson and he's new on the front page of robots.

Just had an idea. I'm planning to use a LOT of (tactile) switches on a walking robot. For instance I wanna put several under each foot. But it seems like a waste of pins to use a digital pin for each switch (or use multiplexers). So I thought I might be able to connect the switches in paralel and read several at a time from an analog input using resistors of different sizes connected in serial with each switch. Like this:

Hi, guys. I remember reading somewhere (maybe LMR, maybe Make Magazine?) about a DIY way to make a sort of electrical switch that closed a circuit when it was punched or stomped. It had something to do with a layer of foam between two contacts -- maybe the foam was partially conductive or something? I'm working on a musical project that involves recreating something similar to a DDR dance pad, and I'm trying to figure out how to make the pads. Does anyone know what I'm talking about, and maybe have a link or something? Or does anyone have any ideas that might prove useful? Thanks.

Ok I have a problem that just does not make sense but since I am a newbie I thought I would throw this up and see if I can get some pointers.

ok guys, building my first picaxe robot and I have a question about the switch I hooked up.

I have a switch wired to digital input 7 and V1 and this is my code

main:
if pin7 = 0 then foreward
goto main

foreward:
low 4 high 5
high 6 low 7
goto main

for some reason when the switch is pressed or let go nothing happpens.

Any ideas why it is not working?

Hi Guys,

 

I was recently rummaging about in my parts bin and i cam across this thingy:

This used to be part of a toy i had as a kid, which was a spinning top that would start to play music and flash lights when it was spun.