8

I am trying to receive and send some data from a computer to an ATtiny through USB. Can an ATtiny85 IC communicate with a computer through USB? If yes, how should it be connected?

8

Digispark made a lot of these as part of a "cheap Arduino USB interface" project a while back.

This is my Digispark, it's pretty cute:

Digispark

They have a web page here.


I got them for about $2 each. The board has the ATtiny85, a voltage regulator, and a handful of other parts.

Schematic (courtesy of Digistump Wiki):

Digispark schematic


More information about the Virtual USB idea at USB-Keyboard with Arduino and V-USB library, an example.

  • If someone is wondering if you can use SPI devices with it due to the low amount of pins, the answer is yes, you can. – Avamander Feb 3 '16 at 15:11
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Can an ATtiny85 ic communicate with a computer through USB?if yes,how should be the connection?

Have you checked the web? There are many such projects. Here is a link to one:

http://www.instructables.com/id/Digispark-DIY-The-smallest-USB-Arduino/

Please remember "Google is your friend".

Cheers!

  • Nooo... not Google... Marjory!!! – yeti Feb 2 '16 at 14:29
  • 2
    Whatever make you happy - "Google == Web search tool of your liking" :) – Mikael Patel Feb 2 '16 at 14:41
  • The Digispark (of which I bought a few) works quite well. It is based on the "Virtual USB" (V-USB) concept which you can find with a *ahem* search-engine-of-your-choice search. – Nick Gammon Feb 2 '16 at 20:54
  • @MikaelPatel Could you please highlight the most important parts of the content you linked? It's currently very much link-only answer. – Avamander Feb 3 '16 at 15:14
  • @Avamander Please see the schematics provided below by Nick. That should answer all your questions about how to connect the ATtiny85 to USB. – Mikael Patel Feb 3 '16 at 18:44

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