message: ULN200XA: Adding Vcc and Vm info to doc
diff: @@ -49,6 +49,9 @@ namespace upm {
  * should also support the ULN2001A, ULN2002A, and ULN2004A devices, when
  * using to drive the 28BYJ-48 unipolar stepper motor.
  *
  + * Vcc goes to the 5V pin on your development board and the Vm pin should
  + * be connected to an external 5V supply.
  + *
  * @image html uln200xa.jpg
  * Example driving a stepper motor
  * @snippet uln200xa.cxx Interesting
  