Hello, I'm cosidering a design with one of the RF pics, since these are OTP, the development would have to be on a windowed part and I would need an eraser. Yeah I could just buy one..... And recomendations would be helpful. But I was thinking that the new UV LEDs might be suitable for the task, has anyone any experiance with this? It seems to me that a UV LED, a little box (sample box from maxim maybee...) a resistor and my bench power supply -- voila! Total cost les than $4 Thoughts? Denny -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics