This guide no longer works with the original Trinket - we recommend upgrading to the Adafruit Trinket M0 (Product #3500) which has built in USB and does not need any special hacks to work!
Temporarily unable to load embedded content:
http://www.youtube.com/watch?v=Tt38wUjvH1k
The video above should be viewed in 720p and full screen if you want to read the text on screen

The sketch used in the demo is posted below
#include "TrinketFakeUsbSerial.h"

void setup()
{
  TFUSerial.begin();
}

void loop()
{
  TFUSerial.task(); // this should be called at least once every 10 ms

  if (TFUSerial.available()) {
    char c = TFUSerial.read();
    if (c == 'a')
    {
      TFUSerial.println("hello world");
    }
    else if (c == 'b')
    {
      TFUSerial.println(millis(), DEC);
    }
  }
}

This guide was first published on Oct 15, 2013. It was last updated on Oct 15, 2013.

This page (Usage Demo) was last updated on Nov 28, 2021.

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