Create arm_breakout_1

electrical/documents/nodes/arm_breakout_1

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+# Arm Breakout 1
+
+Pictures here.
+
+Designed by [Dylan Thrush](www.dylanthrush.com).
+
+## Summary
+
+Made for MR1718 as part of the OSU Robotics Club.
+
+Breaks out the required pins for three IONI motor controllers. Has a USB to UART chip for setting of parameters.
+
+### Bill of Materials
+
+BOM link.
+
+#### Design files
+
+Circuitmaker link.
+
+### Downloads
+Schematic placeholder.
+
+Step placeholder.
+
+### Known Issues
+
+#### Version 1
+- Footprint for USB connector is mirrored about the vertical axis, creates 5V -> GND short.
+- LEDs don't seem to work