rusefi / alphax-4chan

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Mechanical improvements for MAP sensor footprint considering SD card on back #66

Closed rusefillc closed 1 year ago

rusefillc commented 2 years ago

We have some boards with MAP pulled off

only three of eight pads are actually used for anything

what tricks like vias and more metal can we try to increases our mechanical chances?

rusefillc commented 2 years ago

@ElDominio any chance to see photos of damanges PCBs?

rusefillc commented 2 years ago

@andreika-git please check datasheet if we can GND or else currently disconnected pads

ElDominio commented 2 years ago

Will upload later today i think they're in my bag

ElDominio commented 2 years ago

IMG_20221006_230709.jpg

rusefillc commented 1 year ago

Hot glue did not help these do not even survive shipping :(

WhatsApp Image 2022-11-29 at 01 10 18

@timbelom part of the problem is poor soldering?

WhatsApp Image 2022-11-29 at 01 12 24

mck1117 commented 1 year ago

is that broken solder joints, or pads torn off the board?

dron0gus commented 1 year ago

Do not put high profile SMD components close to board edges.

rusefillc commented 1 year ago

Do not put high profile SMD components close to board edges.

plz remind why :)

mck1117 commented 1 year ago

plz remind why :)

I seem to remember somebody recently had issues with tall components near the edge recently 🤔

ElDominio commented 1 year ago

I assume that having it near the edge means it won't be inside the profile created by the connector and the edges of the board

rusefillc commented 1 year ago

@Nadezhda-n please match latest 2chan maybe with larger center hole see https://github.com/rusefi/alphax-2chan/issues/77

Nadezhda-n commented 1 year ago

image Micro_SD_Card on the bottom. I guess it needs to be moved?

rusefillc commented 1 year ago

Ohhh let's do nothing for now that would be safest?

Nadezhda-n commented 1 year ago

https://github.com/rusefi/alphax-4chan/tree/New_rev include this

ElDominio commented 1 year ago

Ohhh let's do nothing for now that would be safest?

Will MAP sensors still bruise easily?

rusefillc commented 1 year ago

Ohhh let's do nothing for now that would be safest?

@Nadezhda-n can we apply the copper change (connected NC pads and vias) but not the huge whole? i.e. can we only make progress which does not require SD card to be moved?

rusefillc commented 1 year ago

2chan has another improvement and via to reinforce pads

Давай повторим самую безопасную часть усиления прощадок 4,5,6,7,8 переходными отверстиями и дополнительной медью

большое отверстие сейчас работать не будет, потому что клей сзади не приклеить. пока оставим это большое отверстие неиспользуемым на будущее, когда SD карта передвинется

image

Nadezhda-n commented 1 year ago

image