www.coridium.us/forum

I have a device that I built using a SuperPro. I power it with a preregulated 6 Volts. I can trim that regulator down to 5.0 Volts. I currently use the SuperPro 5.0 Volts to power a custom Arduino shield.

Can I use a Pro +, and power my custom board directly from my 5.0 Volt regulated supply?

What is the difference between a SuperPro and Pro +, other than the onboard 5.0 Volt regulator?

looking at this Help page - http://www.coridium.us/ARMhelp/index.ht ... rPins.html
about 60% of the way down is the Pro+ power situation
it appears that the +5v on the (arduino) power connector has to come from an external 5v supply
the steering diode D5 would prevent the input power from getting to the +5v pin on the (arduino) power connector
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You could use the external 5v at the (arduino) power connector to supply power to the Pro+ board - it doesn't use a whole lot.
maybe 50ma - just going off my memory and adding a cushion.!
Hope this helps. olzeke51
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the RTC crystal is a difference also
Program memory and data memory are different - by a large factor

I don't need much program or data memory, and I don't use the RTC.

I'll have to check the Memory Map.

I do need the DAC output on P0.26.

I guess that I would need to recompile my program for an LPC1751.

so you don't use ARMBasic for this application??
there is a - sort of DAC command [its not built into Basic] - use the 'Search' tab for the online help
and it will give you some register-banging subroutines. Haven't done it myself.

The LPC1751 does not have a DAC.

basicchip wrote:The LPC1751 does not have a DAC.

That makes my decision easy! Thanks, I have to order the SuperPro.

My code is written in C, and my Prototype is working. I just purchased some Printed Circuit boards for my next build, and was looking to save a few dollars by going to the Pro +.