work on current sense

hardware/mcu.kicad_sch

@@ -1244,7 +1244,6 @@
   (no_connect (at 76.2 144.78) (uuid 1efbc283-ac46-4f94-842c-84f0d681a5af))
   (no_connect (at 242.57 74.93) (uuid 23ff3ecd-9cc7-4311-8516-19a2f14b2a0f))
   (no_connect (at 76.2 147.32) (uuid 2a30723c-e19e-484c-a558-e2518c7fa298))
-  (no_connect (at 76.2 93.98) (uuid 4097a7f5-307f-426d-8b10-93c7363082bb))
   (no_connect (at 109.22 109.22) (uuid 4aaf6370-e30d-4f53-a93f-809003565bc0))
   (no_connect (at 109.22 76.2) (uuid 54e7272b-9df3-4bb0-8f21-ec5b918bf196))
   (no_connect (at 76.2 101.6) (uuid 560db69f-37be-4fd4-92e3-370ff316d6a8))
@@ -1286,6 +1285,10 @@
     (stroke (width 0) (type default))
     (uuid 07d463d1-e48d-47cf-aace-6ce945412e99)
   )
+  (wire (pts (xy 66.04 93.98) (xy 76.2 93.98))
+    (stroke (width 0) (type default))
+    (uuid 0ae1d920-61dc-47b0-bb3a-01dc30955d27)
+  )
   (wire (pts (xy 153.67 73.66) (xy 153.67 76.2))
     (stroke (width 0) (type default))
     (uuid 154ecc67-6e7b-4d37-871d-c21e3e2f2a9c)
@@ -1675,6 +1678,11 @@
     (uuid fdbfadea-83f6-4000-9e96-29a013799f62)
   )
 
+  (text "really acting as UART3" (at 38.1 93.98 0)
+    (effects (font (size 1.27 1.27)) (justify left bottom))
+    (uuid f38d1d94-2220-461e-9426-17b708e0e811)
+  )
+
   (label "ADC1_IN12" (at 151.13 76.2 180) (fields_autoplaced)
     (effects (font (size 1.27 1.27)) (justify right bottom))
     (uuid 1f5c36e0-60d0-431c-84d6-00b4e0d07644)
@@ -1764,6 +1772,10 @@
     (effects (font (size 1.27 1.27)) (justify left))
     (uuid 3ec80914-db34-463e-8cd0-4c9fd667f72b)
   )
+  (hierarchical_label "DIR" (shape input) (at 66.04 93.98 180) (fields_autoplaced)
+    (effects (font (size 1.27 1.27)) (justify right))
+    (uuid 40834cf8-b4b2-4e55-83fc-460d5635166e)
+  )
   (hierarchical_label "USB_N" (shape bidirectional) (at 139.7 99.06 0) (fields_autoplaced)
     (effects (font (size 1.27 1.27)) (justify left))
     (uuid 411dfb60-e936-441b-b5dc-118a732ffd1c)