hi,
sorry, somehow i wasn't able to login. Now it's ok, thanks Admin!
So, here is my board. I tested it and works fine, but i did it just for my fun. And i don't really know that it can help somebody.
When i prototyped, the Vpp generation wasn't so stable, but when i connect an ext. power supply it was working well. This was the reason why i introduced the maxim step up converter.
Also i propose to be able to run from the usb power, but also from an ext power supply, which is adjustable. In this way i think is independent from the usb power supply, and also can give power supply for the target board.
I made just these two little modification in the original circuit, and another one was the newest ft chip-RL, which is more advantageous than the older BM chip. Also i connected some leds to show whats happened.
but it's a challenge to build this board, because i used the rl chip with 0.65 mm pitch, and also if you loock carefuly, you have to solder under the component, wich is not so easy. But i solved with a really crazy idea, i'll comeback to this issue ,if you are inrerested.
I did it in protel99, but please don't ask for the sourse file.
so, after all, i think that is cheaper to buy an original one!
thanks and good luck,
pama
http://rapidshare.com/files/30709969/icd.zip.htmlLinks not functioning !!