Spot the difference. Or: RX and TX, again...

Spot the difference. Or RX/TX. Again...

Every now and then you come across a little trick that is too good not to share.

I think there are few electronics engineers who have never had it happen: RX and TX swapped.

"But you can just look that up in the datasheet, right?"

Believe me: no guarantee you will get it right the first time!

The solution? Make it easy on yourself.

Place two 0-ohm resistors in a square. That lets you swap RX and TX easily, without changing your PCB layout.

And at DeltaProto we like to take it one small step further.

We always send one sample ahead first.

Find out which orientation works and tell us whether the resistors should be placed horizontally or vertically. We build the rest with all the changes, exactly the way you tested it.

Test first. Then the rest.

PS: And that red colour? Not a coincidence either. Give your #ProtoPCBA a different colour and your colleague sees at a glance that it is a prototype. Saves some confusion!

#PCBAProtoLabLearnings #HappyEngineering