I have started to crunch the numbers. And I wanted to bring one item to attention now so it does not come as a shock later. The Kit #4 (RS485 pin header) price has gone up. Small changes are normal but I wanted to post about this one since it was unusual. The original supplier for this 4 pin header has gone out of stock and does not know when/if they will get anymore.
I have found another source but the cost will be .78 each instead of the originally posted .50
Bill