9 years, 5 months ago.

Maping space and tactile sensors

Hello,

I am having difficulties actually defining starting steps for my project cause English is not my native language...so, this is what I'd like to make:

I would like to experiment with QTC pills (Quantum Tunneling Composite sensor, a touch sensor most basically put). For all I've read on the net out there, it acts as a very sensitive switch... So, one of the ideas I had was maybe make a some-what drawing board with a pen (like Wacom has to offer). Just, it would be concentrated on using the QTC pills as pressure sensors.

Variant 1: To construct a pen like that, I imagine I would also have to figure out a way to map the place it lands its tip. The only thing that comes up my mind is can I use HMC5843 IC for mapping areas? Can anyone explain to me how would I actually do that on mbed? What would/should my general steps in process be if I'd like to map a certain working area? Would a sheet of magnet do or not? I'd be very grateful if anyone can point a few starting steps in mapping 2D space in general using mbed, not regarding the rest?

How should I collect the input from the pressure sensor? I know about antennas, receivers and such only in theory, I don't know from where to start if I'd like to build a system like this?

Variant 2 would be avoiding putting the QTC pill in a pen system but instead use a matrix of QTC pills to act as the drawing board, but I imagine that wouldn't be smooth for actual drawing/writing. And the mapping problem is pretty much straight-forward in this case since I would be collecting data from all QTC points in the matrix. I'll try this one also, just for fun, but basically I'd concentrate more on Variant 1.

And about the language thing...I keep thinking/feeling like I don't know the exact expressions in English, and I basically freeze when I want to talk to Google about it...I don't know what to search...

Can someone help me?