Hi,
@soeren
wow that helps alot thanks. just a question, what are acid traps? and how do i fix them?
Acid traps are inside corners below 90°, in which it is hard to clean the etchant out properly and hence it will continue to etch the copper and may result in broken tracks over time, as well as generating electrolytic phenomenons (think little batteries in strange places in your circuit), with the humidity out of the air.
You fix them by never making inside corners below 90°.
I have attached a revised file. write "ratsnest [enter]" or hit the ratsnest button when you have loaded it into Eagle.
I have moved some components a bit and traced it with controller power separated from the ADC4/5 ports (as I first thought they were for servos.
Since you didn't hook up the motor driver (Don't call it VCC, when power is called +5V), I have left that for an exercise for you - I have hinted a likely trace route, but then the ADCs and the other tap should be supplied from the line feeding the controller.
if you look at the link i attached it shows the words running off the board
It doesn't on my screen, but I have changed it anyway.
@trumpkin
i think i will add the capacitor, and move the other. thanks
im not going to be running anything to big so i think ill let it all run from the same. bat. but thanks
its all auto routed. guess i need to go back over it.
My comments, in the last post as well as this one, only covers the PCB, as I got the idea, that you weren't finished with the schematics, but just wanted an early oversight.
You definitely need a cap of say 100µF (
at least) on the input of the regulator, 1nF to 100nF over the supply of the controller (I personally prefer to smack a 1206-size cap on the solder side after assembly).
As I don't know what the circuit's intended purpose is (an alarm clock with servos?? - for pouring a bucket of cold water over hard sleepers perhaps
), I won't comment the schematic further.
btw how do i make the traces bigger on eagle?
That depends on whether you wanna do it for the auto router, for manual routing or you wanna change some traces on an allready routed board.
Auto router - type "drc" and press [enter] (or hit the drc-button) and set up the auto router as you want and then save it into a dru-file.
I could send you a reasonable dru that you can put into the DRU folder under the Eagle folder if you like.
Manual Routing - Change the width parameter on the top of the screen when you are routing.
Allready routed - write "change" and [enter] (or hit the change button), select "width" and finally, the width you want.
how do i make the 90o corners better? like 45
Yes (or even rounded corners if you like, but that's harder on a crammed PCB).
You should take some time to go through the Eagle tutorials (in the subfolder "DOC").
