Hello! I can help you connect phototransitors to USB? I just connect to the date + and data- in series? Thanks

 

Are you asking for assistance or are you offering assistance? Your wording is unclear on this point.

hgmjr

 

Assuming you're asking a question, the answer is no. The bare transistor can produce only an analog signal, and USB requires a digital signal. There are USB devices such as a LabJack or DataQ that can perform analog-digital conversion, but you may not be happy with the cost (>$50).

 

I see. I guess that is an analog signal, but was not sure. Can you give more details LabJack or DataQ ? I want to build an IR touch screen. Thanks

 

Google is your friend. You'll find all the details you want.

 

If you mean multi touch screen, I tried! But I did not find anything on Google, no circuit diagram. Maybe I have not looked too technical. Finally, a LabJack I could help make a multitouch screen? LabJack see that could be made ​​easier at home, on a PCB.