shouldn't that be 7-20V?
Why not connecting it with the external memory bus?
There is a via under one of your crystals (connected to GND I believe?). Just thought I'd mention it in case it was not intentional.
@bubulindo: QuoteWhy not connecting it with the external memory bus?I don't understand. What external memory bus? Care to elaborate?
IMHO, why not go for switch mode regulator? After all the boards is going to use quite an amount of current. Furthermore, the overall board cost is already high, adding a few more dollar for switch mode IC, inductor, diode and some capacitor won't cause any harm. Then you can pump in higher voltage and definitely less heat!
Suggest making the proto area 2 pins longer, to accept at least 1 20-pin DIP.
I'd like to be able to work with up to 14V. Not sure how you'd go fitting the extra components while minimising distance between the reg, diode and inductor. Perhaps by turning the 5v regulator around and moving the 5v cap above the Vin cap?
Quote from: Jonathan Oxer on Jul 28, 2011, 12:06 am@bubulindo: QuoteWhy not connecting it with the external memory bus?I don't understand. What external memory bus? Care to elaborate?Guessing he means connect the ethernet feature via address/data port A (D22-29) with D39 ALE, D40 Rd, D41 Wr, rather than using the SPI port. I don't know if there's any existing Arduino ethernet kits that do this. Using SPI means compatibility with existing ethernet shields and EtherTen.Or have I misunderstood what bubulindo was suggesting?
have a look and see if it's possible to place two connections on the TOSC pins in the chip.
are the Pwr and D13 LEDs different colours?
why not go for switch mode regulator?