midi_to_cv: add README

midi_to_cv_daughter_board/README

@@ -0,0 +1,6 @@
+
+MIDI to CV daughter board for Raspberry Pi/Libre Computer s905x
+
+Along with the program in another repository,
+	(https://bxxa.cc/gitea/cinnaboot/midi_to_cv), supplies control voltages and
+	gate signals for use in analog synthesizer modules.

midi_to_cv_daughter_board/midi_to_cv_daughter_board.kicad_sch

@@ -4379,9 +4379,9 @@
 		)
 		(uuid "18723fb3-45bc-4565-9558-db2c1d420c84")
 	)
-	(text "* 10 turn"
+	(text "* 10 turn\n	trim to 5.0184V"
 		(exclude_from_sim no)
-		(at 146.812 62.23 0)
+		(at 150.114 63.246 0)
 		(effects
 			(font
 				(size 1.27 1.27)
@@ -4389,6 +4389,16 @@
 		)
 		(uuid "f1ce0a35-a6ae-4ada-ac51-51de7028cdc4")
 	)
+	(text "* TODO: add analog switch with ~5 sample\n	and hold circuits for more outputs"
+		(exclude_from_sim no)
+		(at 255.016 121.92 0)
+		(effects
+			(font
+				(size 1.27 1.27)
+			)
+		)
+		(uuid "f6cd195e-9d8a-445f-977c-10fd671fe171")
+	)
 	(global_label "GND"
 		(shape input)
 		(at 30.48 171.45 180)
@@ -6447,22 +6457,22 @@
 			)
 		)
 		(pin "3"
-			(uuid "bca8f763-f0ee-47e2-8b15-6faa0ff9ad57")
+			(uuid "bca8f763-f0ee-47e2-8b15-6faa0ff9ad59")
 		)
 		(pin "1"
-			(uuid "3fd76e6c-94ad-4d48-b702-bf6b60c4a01f")
+			(uuid "3fd76e6c-94ad-4d48-b702-bf6b60c4a021")
 		)
 		(pin "2"
-			(uuid "aba563dc-ca56-44fe-ba5e-9bc083e17a13")
+			(uuid "aba563dc-ca56-44fe-ba5e-9bc083e17a15")
 		)
 		(pin "4"
-			(uuid "6fe05239-1a45-4cdc-bf16-57aa11540c37")
+			(uuid "6fe05239-1a45-4cdc-bf16-57aa11540c39")
 		)
 		(pin "7"
 			(uuid "f05b2b11-8159-4cfa-8c45-f95d35896681")
 		)
 		(pin "8"
-			(uuid "a31f6c80-31b6-4cfc-9741-b094366122e9")
+			(uuid "a31f6c80-31b6-4cfc-9741-b094366122eb")
 		)
 		(pin "5"
 			(uuid "e60c1fd6-6033-461f-b84d-73979c42739f")