Merge pull request #501 from Achllle/roboclaw_awg

Specify wire gauge for roboclaws

electrical/pcb/README.md

@@ -338,9 +338,7 @@ Make sure to orient the connector in the proper direction, as indicated in the i
 
 First, wire the 6pos terminal block headers to the roboclaw boards, as indicated in figure 3.36.
 
-TODO: update the below and make sure it's correct
-
-For v2.0.3, you should wire the pins in the J16,J17,J18 headers directly to the pins on the corresponding side of the roboclaw - it is a direct 1-to-1 mapping all the way down, with no wires crossed.
+Unless you have an older version of the PCB (v2.0.2 or earlier), wire the pins in the J16,J17,J18 headers directly to the pins on the corresponding side of the roboclaw - it is a direct 1-to-1 mapping all the way down, with no wires crossed. Use 16AWG wire (18AWG would also be fine)
 
 Do this for all three roboclaws. 
 
@@ -561,4 +559,4 @@ Once you've verified this, we'll focus on the direction. We want the motor to sp
 For both motors check that the direction matches the diagram. If it doesn't, for that motor in the `General Settings` tab, select `M1 Reverse`. Check again to verify it matches. Now verify that the encoder value increases when you send a positive PWM for each motor. If it doesn't, select the `invert` checkbox in `General Settings` and verify again.
 
 > **Important**: Make sure to save these settings to each Roboclaw's non-volatile memory by clicking on the `Device` menu > `Write Settings`.
-Repeat starting from Section [6.1](6.1-RoboClaw-Testing-and-Verification) for the other two roboclaws.
+Repeat starting from Section [6.1](6.1-RoboClaw-Testing-and-Verification) for the other two roboclaws.