INPUT
In this assignment I had to:
* redraw the echo hello-world board
* add (at least) a button and LED (with current-limiting resistor)
LESSON >>video recording - web
PROCESS
>>> ROUTING THE CIRCTUIT
Out Tecsup team planned to built 2 PCBs, principal card had the microcontroller TINY 44 and another card with some input and output components.
This is the pin configuration of our ATINY44
Principal BOARD
This is the diagram of the principal circuit designed in eagle: 
Generating board. Remember to work in mm.
After routing some paths:
Checking final paths:
I needed to add 0 ohmios resistor (R3) because I did not have space to create a new route:
Finally the first board is almost ready to fabricate.
Second BOARD
This Board will have one bottom (INPUT) and two leds (OUTPUTS).
Routing
>>> CREATING IMAGES TO FABRICATE BOARDS
Principal BOARD
Second BOARD
>>> MILLING CIRCUIT BOARD
I used the info in my assignment 04 ELECTRONIC PRODUCTION to fabricate the boards.
Principal BOARD
Second BOARD
OUTPUT
>>> SOLDERING COMPONENTS
Components
Principal BOARD
Second BOARD
FILES >>
Here are the files that I created if you wish to study or replicate this assignment:
Principal Board SCHEMATIC - Principal Board BOARD
Second Board SCHEMATIC - Second Board BOARD
>>> COMMENTS