I’ve been shopping around for force sensitive resistors. Basically I’m building a beverage (beer) coaster that has a RGB LED in the base of it. As you drink your beverage (beer) the LED should fade from green (everything is good) to red (I need more beer). I understand that Arduino is overkill (not to mention cumbersome) for this project, so I’ve purchased a few PICAXE’s to get the job done.
Now, all of the commercially available FSR’s I’ve seen run 5 bucks or better. I’ve seen the DIY examples of FSR’s using conductive foam that IC’s ship with, but would like the neat, tiny commercial versions. Anyone know where I can get some for cheaper? And why the heck are they so expensive in the first place?
Does anyone have a better (cheaper) idea for accomplishing the same task without a FSR?
Also, this is my first post here, and I must say that this is one of the best forums I’ve ever participated in. Everyone here is so nice and helpful!
Thanks in advance,