bump sensor

[bobthefirst1]

where can I buy bump sensors Or is it very simple to make one myself?

[Gertlex]

Define bump sensor... preferably with pictures (google it!)

[Soeren]

Hi,

where can I buy bump sensors Or is it very simple to make one myself?

A simple bumper switch can be made from a length of piano wire (music wire), or eeven a spring from a dried out ball pen.
A sensor which detects obstacles before actually touching them can be made with IR light.
Any robotics shop will have something if you don't wanna make it yourself.

Google should help you find thousands of links.

[waltr]

Yes, there are very simple to make. Contact type are a basic on/off switch.