One More Time!

Well after a handful of suggestions from Mike and the DIYC community, I have re-spun the PCB without resistors and without a top plane and a couple other changes.

Here’s a list:

  • All traces are on top without using a polygon for a power plane.
  • Bottom is not cut by any traces (other than the version text) since all traces are on top.
  • J1-6 is no longer ground
  • No 45° angles coming off non-round pads for under-etching.
  • Trace from U1-8 to decoupling C1 is very short.
  • Removed resistors and reduced size after testing breadboard reliability without resistors.
  • Squished the U1 placement silkscreen so it’s not on the solder pads


DIYC Tester PDF

Hephaestus BOB v0.2

Version 0.2 has been made. For good design practice, my friend Mike Lane suggested I get the decoupling cap as close to the power pins as possible. He suggested a 90° clockwise turn of U1 and moving C1 below to be near the power pins to increase the effectiveness of the capacitor. Here’s the result to be reviewed.


DIYC Tester PDF