by richard dillon » Fri Apr 17, 2015 3:06 pm
Art
Thanks for all the help. Guess I'm gonna buy a different cam since my screen is dead in my laptop. I am using another monitor plugged into it, so it's not easy positioning the laptop by the monitor, but I do get results.
My new idea is to use 4 photo transistors coupled to the monitor, to trigger 4 led strips reading the pixel transitions on the screen. Your method of bars on the screen does not enable positioning the transistors so that only one is on at a time, since the bars are adjacent and overlap. I could use gates or counters to trigger the led strip, but illuminating one spot where the photo transistors are placed is cheaper and faster. No need for extravagant arduino circuits or usb..... I think a external method away from the monitor would improve the results. The led strips are so cheap now. Just an idea.
PS, I might not post here often, but rest assured The Drudgereport doesn't get that many more clicks than gearotic.com in this house. Always interested in something new. Have a good vacation.
Art
Thanks for all the help. Guess I'm gonna buy a different cam since my screen is dead in my laptop. I am using another monitor plugged into it, so it's not easy positioning the laptop by the monitor, but I do get results.
My new idea is to use 4 photo transistors coupled to the monitor, to trigger 4 led strips reading the pixel transitions on the screen. Your method of bars on the screen does not enable positioning the transistors so that only one is on at a time, since the bars are adjacent and overlap. I could use gates or counters to trigger the led strip, but illuminating one spot where the photo transistors are placed is cheaper and faster. No need for extravagant arduino circuits or usb..... I think a external method away from the monitor would improve the results. The led strips are so cheap now. Just an idea.
PS, I might not post here often, but rest assured The Drudgereport doesn't get that many more clicks than gearotic.com in this house. Always interested in something new. Have a good vacation.