alt Hacker NewsI find first version https://github.com/petrmikheev/endeavour much more impressive. Dude somehow managed to get 100MHz DDR1 ram working on 2 layer board with no ground reference :o Its one of those things you only attempt when crazy or dont know any better. Anyone with EE experience will tell you its impossible, like flying commercial grade SoCs in satellites :) Mad lad.
Replies
joe_mamba • today at 10:13 AM
Signal integrity is a myth propagated by big-PCB.
I can't imagine why a 100 MHz digital signal at 2.5 V would be even particularly challenging on a small two-layer PCB. A lot of signal integrity lore has to do with passing EMI compliance (this almost certainly wouldn't), as well as with people extrapolating from Rick Hartley videos without pausing to think if it really applies to hobby stuff.