Over all looks fine. I however made some more changes. I screwed up with the rectifier part, it actually has 2 parts in the .fzpz and I’m not sure how Fritzing will react to that. Since I was modifying the part anyway I chose to check it and fix it up (which was lucky because the hole sizes were marginally too small! A 0.035in hole where the pin is 0.034in wide at max tolerance, I replaced with 0.038 holes (which as a bonus will accept 0.1in headers if you choose to make them plug in.) Corrected the size of silkscreen to match the real part then substituted the new part in to the sketch. Then I changed the grid size to 0.05in, because the rectifier pitch is 0.15in with the 0.05 in grid the traces will align with the pads which looks neater.
Original sketch (no modifications) for reference:
first move all traces possible to the bottom layer (anywhere there isn’t a collision with the top layer.) The reason for this is that with solder joints potentially under components and thus not visible, they can (but usually won’t) not get soldered correctly. Joints on the bottom of the board are easier to examine if there are problems. In this case I moved the two traces outlined in green here from top layer to bottom layer as there are no conflicts.
then set the grid size from the default 0.1in to 0.05in to allow the rectifier pins to be aligned straight for neatness (makes no practical difference except appearance.)
then align the new part connectors (which are on 0.15 boundaries the original part was on 0.14in boundaries but the tolerance is 0.160in to 0.140in and thus the center at 0.15in is the preferred value and happens to align well with the 0.1in grid.) The smaller grid size also allows tighter corners (which doesn’t matter much in this case as there is lots of room.) The traces circled in blue were moved to bottom layer, and in the case of the regulator simplified to reduce the length of the traces. It likely isn’t important in this case, but is in a high current situation where trace resistance matters, so it is a good habit to get in to.
these changes (and the new rectifier part) are in this sketch
ECU Unit fixed-latest-improved.fzz (184.7 KB)
and here is the new rectifier part (I will probably post it in the thread I posted the original as well) which is technically in the temp parts bin associated with the sketch, but is here for convenience too.
Bridge-Rectifier-600V-improved.fzpz (5.2 KB)
Peter