192:LED

I did ordered a first batch of three prototype boards from OSH-Park. Compared to the last log there where not many changes, but I made some nice renders of this "rev0" board:

I did order stencils from OSH stencils and all missing parts as this tiny 2016 crystal. This crystal is also a optional part. The internal oscillator of the ATmega could be also used for first tests. But if using UART and high baud rates it was never reliable in earlier circuits.

I will soon publish at least the gerber files int the github repository.

So with the added Crystal and the two capacitors for it, I think it is ready now. You can see it right side of the Microcontroller on the image. The Crystal is a 2016 package and the two capacitors are 0201 (I hope I will get soldered that). The silkscreen marking looks also nicer now.

On the top side there are no big changes.

The two inner layers are not shown, but there are mostly just two planes for Vcc and GND and not many traces.

I am planning to use OSH Park's 4 Layer service for a first prototype. But first there are some thinks to do:

• find a oscillator, crystal or resonator that is small enough
  (I think the size 2016 will fit, but not tested yet)
• Clean up both silkscreen Layers

To see the history later. Just a log with the old image, which was in the first version of the Details.