noskule Posted December 4, 2003 Report Share Posted December 4, 2003 Hi ListI did ask yesterday the question about the trackball . .this is working so far. Now i thought it would be (relativly) simple to build a obtical movement sensor to connect like a digital pot with this part http://www2.snm-hgkz.ch/~b/0108.gif. So far i understand the principle of digital pots i need 2 of those witch have to be shiftly placed for detection of direction of movement.Then i need a comparator like thishttp://focus.ti.com/lit/ds/symlink/lp339.pdfso my question:is this generaly right ?what size must the distance between the sensors have?witch comparator i have to take ?is there somthing what i forgot ?thanx nos Quote Link to comment Share on other sites More sharing options...
noskule Posted December 4, 2003 Author Report Share Posted December 4, 2003 . . .. i have one more question . .. on the sensor : one the |<- is the led ore diode .. .the other one is the sensor . . .is this a variable resistor .. . ?what dos the comparator exactly: define the point of change betwenn 0 and 5V on the output of the comparator?. . .. ..do i need other parts to make the circuit complet? .. ... . Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.