rcx21000
Well-Known Member
You could have a light right by the sensor, so the sensor would detect the color... Only problem is that theres something about the LCD refresh rate not fast enough to do that...AlexW posted on Dec 4 2003 at 07:31 PM said:Well... Maybe somebody came up with this idé in this or another thread but I remeber when I made a DIY "lightpen" on my C64 a loong time ago... it was one light diode and one transistor and a resistor (if I remember correctly). Very easy to do... it registered the scanline witch a TV/Computer makes... could this be done with a LCD? or is it that LCD does not emit anything at all... hmm... that is probably it... OK... if you could some thing that registers on a lightdiode than you could use the JTAG interface to connect it maybe?
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