Re: V5 & AMP on one board
Posted by
sbt on
Feb 24, 2017; 1:32am
URL: http://bluesaab-forum.90.s1.nabble.com/V5-AMP-on-one-board-tp972p1005.html
homerisback wrote
Anyway, in my opinion, I like separated LEDs for each signal. That's my personal preference, like octogonal tracks vs round tracks
Agreed; separate LEDs at least means you don't need a key to understand which is e.g. RX or TX. For BT leds though, you still need to know what the functions are.
homerisback wrote
Latest update of 5.3 board, with its extra and totally useless feature. Moved a few components (resistors, capacitors and U3) on board and from one side to the other, to make more room between CAN comms & audio signals. Added ground planes. Normalized labels.
Nice. Small quibble, but with the removal of the 555 (effectively a revert to 5.0 as a starting point), I wonder if it's preferable to reinstate the via array running down the left side that Seth included in 5.0. I believe this was for heat/noise dissipation.
homerisback wrote
I have one question about Atmega328, is it that necessary to have an automotive certified chip ? The price of it is 3 times another "standard" one.
I believe the principle behind "automotive" parts is resilience in the environment, including noise, heat and vibration, such as that found in the engine bay. You could argue (assuming the BlueSaab is to be installed in the passenger compartment) that this requirement is excessive. Care to try out a regular ATMEGA and share what happens?
Cheers,
Sam.
9³ 5D MY02 - Stålgrå, AS3; iOS 16.1; BlueSaab v5.0-p1+Amp v1.1, SAAB-CDC v4.1 with mods