Originally Posted by afb
This is off topic of this thread. But ???
Those PicChips can be a lot of fun. I've put together a number of these units that show total number of flights, total flight time, total ampere hours, then changes over to either ampere hours for the current flight when the motor is off, or amperes when the motor is running.
Its range is 0-51 Amperes, and some of my models have had over 250 Ampere Hours cycles through my 6S2P A123 battery packs.
If you've not made circuit boards before, check out www.expresspcb.com
. They have their "Miniboard" service where they will deliver three 3.8 by 2.5 inch double sided, plated through hole circuit boards for $59, delivered to your house. Their web page has all the schematic layout, PCB layout software for this type of project. If your project is small, you can put several projects on one 3.8 by 2.5 inch board, and saw them up into individual boards for your project. I can put six of these meter displays on one circuit board.
Before retiring, I had them make several circuit boards that were 12 by 8 inches in size.