Fab Academy 2015
Fab Academy
How to Make Almost Anything...
How to Make Almost Anything...
The weekly assignment consist in redraw the echo hello-world board, add (at least) a button and LED (with current-limiting resistor) and make it following the design rules. The board design is completely free, any program or technique can be used to make the design.
I made the schematic using "Eagle" "Eagle" is a program to design PCB's easy to use and powerful enough to do complex PCB's. First thing I did was get the schematic from Neil "hello World" board design copying the pattern to a paper and passing this design subsequently to "Eagle". In the end, as the assignment says, I added a button and LED.
This is the resulting schematic.
Once you have the schematic, make a board is very simple, just have to order the components, trying to put them in good stead to not to cross the traces.
Once placed components only left routing traces, Eagle has options for automatic routing or you can manually routed, this time I used the automatic routing to help me, but I redid all the work manually to optimize the design.
To mill the board, I used the FabModules, with two different milling strategies, in the first milling strategy, I used a 1/64 (inches) drill for traces, and in the second milling strategy I used a 1/32 (inches) drill for outline.
This board is not very difficult to weld, the chip is large enough to be welded with a low power welder seamlessly, maybe the most complicated piece for soldering is the resonator, to facilitate welding of this part, it is best to use a little FLUX.
