Is this going to be etched?
What's the overlap in the red circle?
Also I am assuming the 2K resistor is going on the under side of the board?
I am guessing that you don't have a schematic?
Using the breadboard layout on the libs google code page which has given me the working prototype.I'm just sruggling with the conversion from arduino to minimal 328 circuit.
QuoteUsing the breadboard layout on the libs google code page which has given me the working prototype.I'm just sruggling with the conversion from arduino to minimal 328 circuit.I can say that not using a schematic to route the PCB in Fritzing has gave me quite a few boards that are now coasters. Designing a schematic in Fritzing is next to impossible. Just make sure you re-recheck your routing on the PCB. I dropped Fritzing because of it's schematic downfalls. If you plan on making more PCBs, I would highly suggest moving to Eagle.
Crystal is rather far from the processor. I believe Atmel recommends as close as possible with a ground plane.No bypass capacitors?I believe the TLC5940 datasheet calls for a capacitor of several microfarads across VCC and GND.
Codelink - still building the schematic for this =(
I prefer DipTrace, and I've been using it for the last year for my personal projects. I know Eagle might be more powerful and has a gigantic user base, but I like DipTrace better. The free version is great and should be enough even for more advanced hobbists.Back on topic: ditch that layout, since there are several problems with it:- the crystal is too far from the 328- there are sharp corners in the traces. Never, NEVER route traces with 90º angles.- there is no bypass capacitors for either chip- it is good practice to use every space left in the board (in its signal side) for a copper pour linked to the ground net.If you decide to go ahead and use that circuit anyway, that one is easier done with a perfboard, rather than etched. Make use you use DIP sockets, instead of soldering the chips directly to the board.
and added the bypass to the tlc5940