Making a simple effective whisker bumper
We all have need of that last line of defense when the SONAR glitches, the IRPD doesn't and our bot is on a collision course with a table leg. That last defense against re-kitting is a bumper. I have made a few from microswitches, miniswitches and other things - usually they work, sometimes they need too much force to work and "ugh" collision. This example is another type of sensor that doesn't use a switch, its parts are super cheap and it works just great. Its a "whisker" bumper. Here are the parts you need to build one too.
