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Well i tried using a board cutout instead of the NPH but DRC will still give short-circuit warning.
https://i.imgur.com/fjWNSPQ.png
https://i.imgur.com/Vx2YY5K.png
I've waived those specific warnings, it just changes the colour of them from green to lime green. Is there is an option in the...
Yes i thought it was clear enough to understand from the photo i posted.
Maybe the only solution is indeed to selectively tell DRC manually to ignore specific violations, so that it still picks up any other violations.
No. I have a footprint of one component that has multiple fixed placement locations. However a few of those overlap which each other in close distance. Then the hole inside the footprint might overlap partially with a pad inside the same footprint. Altium doesn't like it even though it is ok...
How can i prevent the rule from triggering without selecting "allow short-circuits" (i am assuming this is essentially the same as disabling the rule), and still keep the hole from generating in the drill file?
I haven't played around much but Altium treats the hole as a through-hole pad and it...
Well....then. So technically if this was a 4-layer board and the 2 inner layers were ground layers, and assuming track width and gap was correct, my routing would work? Except the one close to the edge? Seems like a waste of a 4-layer board to me.
As for (2), i thought length matching was more...
I am making a custom keyboard with an integrated usb hub and 2 input/upstream usb type-c ports (selectable).
So my first prototype board had some issues with usb connectivity due to me not knowing anything about differential pair routing, matching/coupling and impedance control. I've learnt...
Yes the datasheet is not clear but in the reset section it states:
"The hub experiences the following two resets:
• Hardware reset via the RESET_N pin
• USB bus reset"
So technically power-on acts like a hardware reset. So pulling it high instead of leaving it floating should be ok. I'll...
So i am changing the usb hub controller in my project to a Microchip USB2514B since it was the 2nd cheapest on Farnell that fits my requirements and has great extra features i might want to implement like a custom configuration via I2C EEPROM.
Link...
Yes i'm not used to but i am learning. I am now designing the next prototype, it will be a couple of days before i finish. I want to keep the pcb as compact as possible, i might need to go to a 4 layer board but it is about double the price.
yeah i removed it for readability. I'll redesign the pcb though so not much point on reviewing this one. Now regarding automatic input switch, should i just use logic gates for example?
edit: This should do the job:
https://www.farnell.com/datasheets/2298721.pdf
yes sure, i can do that, run them parallel, length matched, on the same layer without any vias. However that's not what is causing the issue. The issue is caused because i run 2 set of tracks connected in parallel. So the other set acts as antennae. In practice i should have a switch to disable...
Well i didn't, i thought it was pretty robust to handle it through my testing with other devices like the teensy 3.2
Sure but i can't afford to go to a 4-layer board. I can re-route to get impedances to be the same, but connecting ports in parallel certainly causes problems since the traces of...
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