Electronics Design

Electronics Design

  • Group assignment:
    • Use the test equipment in your lab to observe the operation of a microcontroller circuit board (in minimum, check operating voltage on the board with multimeter or voltmeter and use oscilloscope to check noise of operating voltage and interpret a data signal)
    • Document your work to the group work page and reflect on your individual page what you learned
  • Individual assignments:
    • Redraw one of the echo hello-world boards or something equivalent, add (at least) a button and LED (with current-limiting resistor) or equivalent input and output, check the design rules, make it, test it. Optionally, simulate its operation.

We don't have a fab lab yet... but we learned how to design our ready-to-cut electronic card... I'll show you a little of what Jorge, the instructor, taught me...

Here I will describe the step by step... of my learning... I thank my instructor for the patience....
I put some links, which were my guide ...

During this week, I learned to design a custom PCB from scratch. I used the Hello Echo board as a reference and added a push-button and an LED. The design was done in Eagle following the Fab Academy design rules.

Technical considerations:

  • Track width: 16 mil to ensure reliable milling with a 1/64" end mill.
  • Clearance: 16 mil to avoid short circuits.
  • Components: ATtiny microcontroller, resistors for the LED, and pull-up resistors for the button.

I started by creating the schematic, ensuring all nets were correctly named and connected. Then, I switched to the board layout and manually routed the traces to minimize the board size and avoid using jumpers.

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References

Electronics Design de Cindy Marilyn