Hi, today I found this page: paperduino.eu . The idea to make an Arduino on paper is old, but what i found really interesting was the Attiny85 bootloader, so you can directly put USB on the Attiny. ( GitHub - micronucleus/micronucleus: ATTiny usb bootloader with a strong emphasis on bootloader comp…

Attiny85 as USB-to-Serial

Paul_B April 7, 2014, 1:04am 7

fungus:
USB-to-serial costs $6: ftdi basic breakout for sale | eBay

That is, if you buy the expensive ones, or are in a hurry.

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