2017-07-18
So many failures, so little time More failures. Apparently the driver IC I chose to drive the digital outputs is an N-channel driver. Naturally I had it trying to switch +24V. I know what you’re saying: hey Vic, you stupid, you’ll need a charge pump in order to bring the gate voltage above the source voltage. I did not have nor am I willing to incorporate a charge pump. Another failure was failing to properly Read more…
2017-06-08
The design of the power and serial cape is done. The components have been ordered. I will wait until the IO board comes back and the components come in before sending the cape off to fab. Juuuuust to make sure I didn’t screw up some minute detail that renders the design useless. Additionally, I found a high-resolution picture of the IO board PCB in ‘as made’ representation on the OSH Park’s website. Neato. Front: Back: Read more…
2017-06-03
The board has been ordered, panelized, and sent off to production. So far the process has been moving along at a much faster clip than I anticipated. The board was panelized the same day I placed the order even though I ordered fairly late in the afternoon; certainly after business hours. The next day I received an email that the board has been sent off to fabrication. I know the email says that they expect Read more…