The design is based on the USBtinyISP design from http://www.ladyada.net/make/usbtinyisp/index.html I removed the 6p connector from the circuit because I don't use that. And I've made a new print that is single sided.
The circuit drawing:
PCB layout
Pictures:
usbtinyisp_bottom.pdf
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usbtinyisp_silk.pdf
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