First of all, I want to say that the week 4 assignment was my first working experience with circuits.
I haven’t solder and rather make circuit myself. This week I get familiar with electronic terminology
and understand how some components like resistors, diodes, capacitors, works. Thanks to my instructor
for being tolerant.


I start my assignment from Instaling design software first I chose Eagle because
I like Autodesk’s production but after spending several hours in the working space
of Eagle and watching tutorials all evening I decided to try KiCad. I didn’t expect
that the open-source program can be so good and user-friendly. I got familiar with
KiCad in 2 hours, after watching short tutorials on how to use it. The main problem
that I had was my background which was made last evening and didn’t allow me to do much
on my own. The only solution I found was to do everything step by step and follow the tutorial.
As a tutorial, I used our instructor’s documentation.

the chip I choose was Attiny 44, to make the bord run also I needed two resistors, one capacitor,
and as a part of the assignment, I needed to add One led diode and one button. One of the major
difference which I like about KiCad was that you can choose any resistor or capacitor and change
its parameters right in the drawing of the scheme. After finishing the scheme the difficult part
comes on; designing the PCB and finding ways to connect the components.

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When PCB design was finished next step was to machine it. as a CAM soft I used the Fab Modules.
I export the SVG file and Upload it in Fab modules after a few easy steps the g-code was ready.
then I put it in the Roland soft and start machining the traces. That was the easy part, the problem
I had was cutting the PCB. The PCB contour cutting g-code has the same origin point with trace cutting g-code,
two edges of contour were on the board. To solve that I couldn’t find a better Idea than setting
a new zero point by using G55. I move new zero from old approximately -2.5mm by Y-axis and 2.5 mm by
the x-axis and sat it as an origin G55 try that in the air without touching the PCB and after making
sure that everything is okay start cutting it. finally, I had the machined PCB on my hand and could start
soldering it.

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In the soldering process, I found that some traces are too small and it was difficult for me to solder ic
clean and make the board look beautiful. After it was soldered we tried to program it but unfortunately
I got the message about checking connection anthats ment that something was wrong and it would not work.

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This week was one of that which make me go out from my comfort zone and do something that I haven’t done
before and wasn’t interested in it. I understand that I need to prepare myself for upcoming electronic related weeks.


echo hello