International shipping in recent months has been a total disaster. Anyone who hopes we’re getting back to normal on this global supply chain stuff will be very disappointed. Between COVID-19 emergencies, a shortage of commercial airline flights to carry mail,…
The i’s are dotted, the t’s are crossed, and Yellowstone manufacturing is underway! I want to say something satirical like “I never thought I’d live to see this day”, but truthfully this has been a long, long, loooooooong time in…
This is a story of a small e-commerce merchant who signed up for Amazon Pay: a payment processing service similar to PayPal that leverages customers’ existing Amazon accounts. It all seemed so promising. Amazon Pay would provide an easier checkout…
As 2021 draws to a close, Yellowstone is very nearly finished, with just a few details left to iron out. I recently tested a new v2.3 prototype with a couple of small PCB changes, and so far it’s looking good.…
Yellowstone is inching slowly towards the start of manufacturing. One question that’s arisen is the type of surface plating to use on the PCB. The default / cheap plating is HASL or Hot Air Solder Leveling, which is just a…
While chasing down some Yellowstone hardware bugs, I discovered an unexpected analog-type behavior on the enable input of the Unidisk 5.25 (A9M0104). This is an active low digital input that’s used to enable or disable the disk drive. Under the…
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