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Electronics Production
Milling
![](images/w4copperboard.jpg)
I used Andy's FAB ISP Board this one has incorporated the USB connector in the circuit board.
I used the Fab Modules to cut the PCB board with the I Modela CNC, Firstly I connect and set the machine, then I used a bit of 1/64” or 0.04mm to mill the PNG drawing, suddenly when was milling for any reason the bit broke, fortunately at the point was cutting did not damage the board so I could restart the milling changing a new bit.
![](images/w4brokenbit.jpg)
Finally when was milled already I changed the bit for 1/32” or 0.08mm and the cutting drawing with the Fab Modules. The final result was the expected.
![](images/w4sequence.jpg)
Soldering
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Although I have soldered before was a tough task, soldering these mini components is more complicated than it seems. Firstly I tried with a wasted board, but then I realized was not that easy so I watched soldering youtube tutorials and then was easier. It took me two hours and a half to complete the job, the result is not bad but for the next time is going to be much better.
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My results at last components were very good because finally I understood the soldering tricks.
![](images/w4sequence2.jpg)
Programing
Once I soldered the circuit I proceed to program it, first I download and installed CrossPack-AVR-20130212.dmg from here here. Then I downloaded and unzipped the firmware.zip file Then following the instructions suddenly appeared and error, the Terminal said that there is problems with the connection so I checked again the ports and decided to put a mobile card to make thicker the board.
The problem persisted when I tried again, So I checked the components map and I found 2 mistakes. The Crystal and one of the Zenners were put on the opposite way. I had to take them off and put them again properly.
![](images/w4firsterror.jpg)
When I was trying to take the Crystal off I broke the legs and two copper filaments, so then more problems again… I was thinking to repeat it again but then I remembered what Neil said about this boards, that the good thing is that you can abuse fixing them.
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Once I had it fixed I proceed to program it but again same error, so I checked again the contacts and the components map. I connected wrong the legs so then I had to repair it again. When I was doing it the cable collapsed and broke, I realized that was because of I used a very thick one that did not let move flexible so once I manipulated, Broke. I used a more flexible one and solved it.
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Then I tried program it again, and was very successful afterwards. Finally I got it, and I feel very happy cause I learnt a lot after so many mistakes. I found the problems and I could solved them. I think this problems are not coming again in the future.
![](images/w4smistake2.jpg)
I did not have any knowledge of electronics before, but I think now I know the tricks or at least the steps to start making a circuit. It is very important to check the components map and follow a logic to soldered them, because otherwise you will have problems putting others that are very close.
![](images/w4finalresult.jpg)
Finally I am ready to program it, so follow the next steps:
-Plug the FabISP to your USB port
-Open the Terminal and type
-cd ( + file folder ubication)
-make clean
-make hex.
-make fuse
-make program
And it is program!
![](images/w4done.jpg)
After using few times the fixed FabISP the cable I put broke; So I decided to make a new one. Was a very good experience because I felt I have Learnt, I made it so quick and with good soldering skils.
![](images/w4finalfabisp.jpg)
Also we have a new heat gun so I practiced unsoldering the components of the old FabISP and save some components. Attiny44 is broken so I threw it away.
![](images/w4unsoldering.jpg)
![](images/w4unsoldered.jpg)