Hi there, today I have finished to make a schematic for a board I want to build, just to acquire more practice in this area.
I built an mp3 player with an Arduino Fio and the Sparkfun mp3 shield. Now, starting from the schematic of these boards, I have made a new scheme who has both the mp3 and the Arduino microcontrollers (on the same board), removing some resistors and capacitors (I believe I don't need).
These are the schematic of the two boards (Arduino Fio and mp3 shield):
And I have attached the schematic of the board I want to made.
If you need some additional information, ask me. I don't know if this is a simple check, but I say thanks in advance to the people who want to answer.
mmcp42:
I tried opening both links
I can only see pads !?!
I don't know why. They are the links of the official schematic, taken from the official websites of Arduino and Sparkfun.
I see the schemati with all the components.
mmcp42:
I tried opening both links
I can only see pads !?!
I don't know why. They are the links of the official schematic, taken from the official websites of Arduino and Sparkfun.
I see the schemati with all the components.
Has the file I have attached the same problem?
the attached pdf file is fine
where did you get the links from
oops
I tried a different approach - save the file and open with Adobe - works fine
looks like my FireFox pdf reader is stuffed - apologies!
I have attached the .brd and the related .sch file (a bit different from the previous, because I added the touch sensor and the ON/OFF switch)
I made them with eagle 6.4.0
I'm using a 8MHz microcontroller because I want to use a 3.7V power supply.
vectorel:
I have attached the .brd and the related .sch file (a bit different from the previous, because I added the touch sensor and the ON/OFF switch)
I made them with eagle 6.4.0
I'm using a 8MHz microcontroller because I want to use a 3.7V power supply.
aha that makes sense!
vectorel:
LarryD:
Power LED
(3.3Vsupply -1.8Vled)/330ohms=4.5ma a bit low
is the same used by the sparkfun for the mp3 shield
I always find the power LEDs far too bright - si you should be fine
it's only a confidence thing after all
as for your board - wow you have been busy
some of those tracks are thin
you will have fun getting them made up
also I like to try and avoid "acid traps"
the tightest angle ought to be 90 degrees
anything less and the etching process can eat the track away
take a look at "proper" boards
they look pretty - but not just to look pretty - they are following rules
also have you run a DRC check - I got 399 errors when I tried
The layout is still a work in progress, now I want to know if the schematic I made has the right components, according with the schematic of the Fio and mp3 shield, so then I'll work on the layout more quietly, knowing that I only have to worry about the location of the tracks and components
vectorel:
The layout is still a work in progress, now I want to know if the schematic I made has the right components, according with the schematic of the Fio and mp3 shield, so then I'll work on the layout more quietly, knowing that I only have to worry about the location of the tracks and components
yup
looks like you picked out the best bits!
sticking to 3.3 volts does simplify it all
I guess the odd looking part is some sort of touch sensor?
