Hoi.Nikos
Indeed you can control the exposure (length of time UV shines in one spot) ... it kind of grows or spills over (ie light generates light and bleeds outwards.....)
Can you create dots in four different sizes? ........ i have used PWM on another project to control the brightness of the UV... and then you can create quite a complex GreyScale (or should i say greenscale graphics). The only draw back is you have to be quick to appreciate it before it fades........
What you see in the video are 5mm LEDs ....i have ordered 3mm ones.... in the hope i can get more resolution density.
Best effect is with a PWMed UV laser (its much brighter and longer lasting ..... my new focusable UV laser is awaiting to be fitted)
If your "Chinese" project S2 could use a brush via servopressure and more absorbent paper then i guess you could also achieve wide single stroke characters..... just a thought...
Comments
Indeed you can control the exposure (length of time UV shines in one spot) ... it kind of grows or spills over (ie light generates light and bleeds outwards.....)
Can you create dots in four different sizes? ........ i have used PWM on another project to control the brightness of the UV... and then you can create quite a complex GreyScale (or should i say greenscale graphics). The only draw back is you have to be quick to appreciate it before it fades........
What you see in the video are 5mm LEDs ....i have ordered 3mm ones.... in the hope i can get more resolution density.
Best effect is with a PWMed UV laser (its much brighter and longer lasting ..... my new focusable UV laser is awaiting to be fitted)
If your "Chinese" project S2 could use a brush via servopressure and more absorbent paper then i guess you could also achieve wide single stroke characters..... just a thought...