In order to avoid ruining table or desk surfaces with an olfa or exacto knife, I created a switch that lights up an LED if it senses the blade is no longer in contact with the cutting mat.  I did this by simply placing a sheet of aluminum foil under my cutting mat and attaching a wire to it and attaching another wire to my blade so that when the two came in contact, a light would start to blink, and I would know I was cutting on the wrong surface.

Arduino Sketch: switch-code

No comments yet

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: