Hi all, I'd like to buy some basic components at digi-key. They are very cheap, but with a very huge catalog. I am a newbie. I am serarching two servos for a robot wheel and some cheap switch. The switch should be used to turn on-off the arduino robot. For the servo I think this http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=900-00008-ND would be grat, but can you suggest me a good set of switch or dip switches?
I wouldn't use dip-switches for that. Dip-switches can often be found on (old) PC cards, to change a setting. They can take some abuse, but they're quite fragile. There's a big chance it won't work any-more after being turned on/off a few thousand times, maybe even less.
A rocker switch or tactile switch would probably be better to turn a project on/off. It can also handle a lot more power, the cheapest probably is already good enough.
Thank you! So, an on-off push button like this http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=679-1048-ND would be able to turn on/off my arduino?
Yes, that would be perfect.
You wouldn’t really need a Double pole switch for a low voltage DC project, single pole would be enough.
Here you can read about the differences in most switches.
The one you’ve chosen is a dpst. (The picture on the list shows a rocker switch, but internally it works the same)
For $5.57 I would probably search a switch in an old piece of broken electronics…
Dip switches do have an advantage over other switches, something I realized after responding, you can easily place one in a breadboard. Most other switches have to be soldered.
Still, built fragile and not capable of handling too much power, I’d rather not use them to turn on/off a complete project.