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Archive for August 22nd, 2013

Arduino Pro Mini Pin Coordinates

Arduino Pro Mini - top

Arduino Pro Mini – top

Measured from the Official PCB Layout, with the board origin at the lower-left corner of the PCB, down there by the D9 pin, in mils (0.001 inch):

  • D9 = (50,50)
  • D10 = (650,50)
  • A5 = (535,805)
  • A4 = (535,705)
  • A7 = (535,393)
  • A6 = (535,293)
  • FTDI header = (100,1250) to (600,1250)
  • Reset button = (350,105)
  • D13 LED = (540,100)
  • PWR LED = (350,850)
  • Upper fiducial = (160,1140)
  • Lower fiducial = (490,100)

Subtract 50 mils from each of those coordinates to put the origin at the middle of the D9 pin, which may be more useful. Doing that in inches produces:

  • D9 = (0.000,0.000)
  • D10 = (0.600,0.000)
  • A5 = (0.485,0.755)
  • A4 = (0.485,0.655)
  • A7 = (0.485,0.343)
  • A6 = (0.485,0.243)
  • FTDI header = (0.050,1.200) to (0.550,1.200)
  • Reset button = (0.300,0.055)
  • D13 LED = (0.490,0.050)
  • PWR LED = (0.300,0.800)
  • Upper fiducial = (0.110,1.090)
  • Lower fiducial = (0.440,0.050)

Trust, but verify…

Yes, this is a knockoff PCB from the usual eBay vendor, not from Sparkfun. Contents may settle during shipment. Enlarged to show texture. Your mileage may vary. No warranty, either express or implied, no lie. Do not eat.

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