The workshop video always sucks up a whole day, this one way longer than normal to edit though. Learn about the parts we stock and why.
Routing of the soldering practice badge continues today. We set the design using 3 ‘595 shift registers, and one ULN2003 Darlington array. Two ‘595s control power to 15 columns of LEDs, while the ULN2003 in conjunction with the third ‘595 sinks the 8 available rows, one row at the time. We also fixed some silkscreen issues we had with the 2×5 shrouded header in our Eagle part library.
Documentation on the Bus Pirate v4 LCD adapter started today. Only a few action pictures and some last minute editing remains.
Today we collected information on NPN(BDX33 above, pinout: BCE), and PNP(BDX34 below, pinout: BCE) Darlington transistors with the Processing app for the Part Ninja. These Darlingtons have an integrated clamp diode. This adds an additional conduction path as compared to normal BJTs, thus throwing off the test logic. With this info we will soon incorporate part recognition for them as well.