0 Members and 3 Guests are viewing this topic.
The digital pot was supposed to be on r2 instead of r1. I pulled r2 off the board. Cut a few traces. Relocated r2 to the bottom of the board making it r1.
One thing I do not like is the fact that I will need 2 sets of programming pins. One for the bootloader and one for the FTDI. I'm going to look into other ways of programming since that takes up double the board space. I'm going to research some 6 pin connectors also to see if i can find some that will be smaller than the .1" standard ones I have on there now. I'm sure they are out there, I just dont know what to look for.
Do you program them with another arduino or do you have a programmer?
Current sense resistors don't have to be terribly large. The 2 Watt ones I use are 2512 which are 6.4 x 3.2mm, but you can use smaller ones as well. A 10 mOhm resistor rated for a Watt is good for 10 amps, but you could go to a smaller 1/2W watt resistor if you drop resistance down to 5 mOhms or something.