Firmware only USB (16F84A)

[shahidali55]

Yes it has been done . . .
http://72.14.235.104/translate_c?hl=en&sl=es&u=http://www.telefonica.net/web2/hidlcd/&prev=/search%3Fq%3Dhttp://www.telefonica.net/web2/hidlcd/%26hl%3Den%26sa%3DG&usg=ALkJrhgBhXxyWkStOGbCtqPM31k0MLi23g

[rmteo]

The question is why? You can do it much more efficiently for 1/4 price using modern devices. :D

[skimask]

The question is why? You can do it much more efficiently for 1/4 price using modern devices. :D

I dunno 'bout that...
After all, it is a 16F84A (overclocked at that), doing USB without USB specific hardware (except for the connector of course), driving an LCD (ok, that part is easy).
Take the idea and port it over to a 12Fxxx and you could have the most complicated (firmware wise, not hardware) way to light an LED over USB.
I give the guy a few cool points...not that my cool points matter...but ya know...

[shahidali55]

The question is why? You can do it much more efficiently for 1/4 price using modern devices. :D

rmteo,i know it can be done in 101 ways but this is just awesome.
He has done it just 1Kb of ROM with no extra hardware.

Check out AVR USB.http://www.obdev.at/products/avrusb/index.html
It is firmware only USB which can be implemented on any AVR (without any onboard USB hardware). Still requires 2Kb for USB though.

Has anyone done something like this in picbasic pro?