Finished another PCB for the Viscometer

Well, as far as viscometers go, I could be considered an expert by now (no, not really). Today my new board arrived and I assembled it, I’m kind of proud of it, it works real slick just like the last one. This one has the following changes

  • ICSP provisions so that I can program it in place.
  • a PIC18F2620. Has 10 times the program memory and RAM.
  • diode protection in case the power is hooked up wrong.
  • Fast recovery diode for motor induction absorption.
  • Larger traces for the motor.
  • Fixed resistor array.

Anyways, here is a comparison shot. Old on the left, new on the right.

click image for large size

Well there you have it!

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