For Your Future Electronics:
My previously milled circuit boards didn't function because:
So BEFORE you begin drawing your schematics ( which will make or break, your board layout and forthcoming circuit board), read this tutorial.
Diode orientation - applying the component to your board the proper way: use this link!
You can't just put components on your boards and expect them to
magically work. Diodes aren't the only components that require proper
orientation, so do your research and read the datasheets!
6pin headers have a programming orientation!!
I used this tutorial when programming my programmer.
I also used the arduino serial port to check the output of the program.
Because there are no thermals, be sure to avoid cold solder joints on all components connected to the ground plane, when stuffing the board.
Identify the parts, the leads, know their orientation and solder them according to their connectivity to ground and/or power -micro-controllers & diodes MUST go a certain way.
The basic difference between soldering and brazing is the temperature necessary to melt the filler metal. That temperature is defined to be 842ºF/450ºC by the American Welding Society (AWS) but is often rounded to 840ºF. If the filler metal melts below 840ºF the process being performed is soldering. Above that temperature, the process is brazing.
Past Reflection:The Beginning of Insanity
After reviewing some of the designs and being tutored quite thoroughly by Halima (Fab Academy past/current participant), I know how to start.
I really like Andy's design, especially the jump drive capabilities, as well as the shape & size of the physical design itself.
I will start with the ISP.CAD board, and see how far I get today until about 5:00pm.
I'll want to pick up lead-free solder as well.
The Next Day...So having A LOT of help from everyone yesterday was a great jump into this week's project:
Milling the board:
I have more confidence about how to loosen/tighten the clamp for the bit after watching Zuberi.
Results Over the Course of the Program:I probably milled out and stuffed 3 boards before I actually made one functional. I came in on the weekends and paid for tutoring because I didn't fully understand the electronic logistics portion of the program until around May.
The first board I milled was Andy's and it didn't work:
4th Try: A programmer that works: