LPT: Circuit Lesson 2 has an error.

The Editing Components lesson under https://www.tinkercad.com/learn/#/learn/circuits/learning works great in simulation, but you may have trouble if you duplicate the circuit and download to an actual board.  The lesson calls for connecting the LED's to pins 0, 1, 2; where pins 0 and 1 are reserved for TX and RX, respectively.  I got a mysterious Avrdude Stk500_getsync(): Not in Sync Resp=0x30 that was driving me nuts until I found a solution on an Instructables forum.  I've posted an example project with the correction; also added a breadboard.




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