readme

README.md

@@ -1,3 +1,5 @@
 # CH340 Optoisolated module
 
--
+This circuit is enough for 4800bps. Use high-speed optocouplers to improve speed performance.
+
+![alt text](image.png)

ch340_module.kicad_prl

@@ -1,7 +1,7 @@
 {
   "board": {
-    "active_layer": 0,
-    "active_layer_preset": "",
+    "active_layer": 44,
+    "active_layer_preset": "All Layers",
     "auto_track_width": true,
     "hidden_netclasses": [],
     "hidden_nets": [],
@@ -64,7 +64,7 @@
       39,
       40
     ],
-    "visible_layers": "ffdffff_ffffffff",
+    "visible_layers": "fffffff_ffffffff",
     "zone_display_mode": 0
   },
   "git": {

ch340_module.kicad_pro

@@ -48,7 +48,7 @@
         "silk_text_thickness": 0.1,
         "silk_text_upright": false,
         "zones": {
-          "min_clearance": 0.25
+          "min_clearance": 0.4
         }
       },
       "diff_pair_dimensions": [
@@ -58,7 +58,13 @@
           "width": 0.0
         }
       ],
-      "drc_exclusions": [],
+      "drc_exclusions": [
+        "lib_footprint_mismatch|110862500|64062500|70bbae3c-472e-48c5-83da-9aab7434cd9c|00000000-0000-0000-0000-000000000000",
+        "silk_edge_clearance|95850000|65100000|c4b6e105-15cb-406c-b2f1-093868cacd5f|4197210e-08eb-4c19-aa2a-b5b531405044",
+        "silk_edge_clearance|95850000|65900000|c4b6e105-15cb-406c-b2f1-093868cacd5f|cebc4be0-c04f-42ec-a09f-75783e323478",
+        "silk_edge_clearance|98421750|60250000|c4b6e105-15cb-406c-b2f1-093868cacd5f|d42dc172-3dc2-4de4-98b5-b84df68f9e79",
+        "silk_edge_clearance|98421750|70750000|c4b6e105-15cb-406c-b2f1-093868cacd5f|b9bfdde5-a0f6-41ee-98da-9f40d8c802e2"
+      ],
       "meta": {
         "version": 2
       },
@@ -181,6 +187,7 @@
         0.0,
         0.25,
         0.3,
+        0.4,
         0.5,
         0.7,
         0.9,
@@ -485,11 +492,11 @@
       "gencad": "",
       "idf": "",
       "netlist": "",
-      "plot": "",
+      "plot": "pcb/",
       "pos_files": "",
       "specctra_dsn": "",
       "step": "",
-      "svg": "",
+      "svg": "C:/Users/serzh/Desktop/",
       "vrml": ""
     },
     "page_layout_descr_file": ""

ch340_module.kicad_sch

@@ -8,7 +8,6 @@
 		(title "CH340 Optoisolated module")
 		(date "2024-12-30")
 		(company "sergeyyarkov")
-		(comment 1 "LTV-817 enough for 9600 baud rate.")
 		(comment 2 "Use high speed optocoupler like 6N137A for higher transmission speed.")
 	)
 	(lib_symbols
@@ -1963,10 +1962,10 @@
 		(uuid "69329743-e1cc-4b84-9a3d-8be4f95a97d8")
 	)
 	(junction
-		(at 66.04 33.02)
+		(at 68.58 33.02)
 		(diameter 0)
 		(color 0 0 0 0)
-		(uuid "7ed349d6-cbf5-40f0-9308-ad8eb61710ea")
+		(uuid "870d3b23-1b4f-42d1-ab3f-cd9eb89a9395")
 	)
 	(junction
 		(at 85.09 33.02)
@@ -2016,6 +2015,16 @@
 		)
 		(uuid "05c207ec-f792-4958-9029-1f1f2a19b957")
 	)
+	(wire
+		(pts
+			(xy 68.58 33.02) (xy 82.55 33.02)
+		)
+		(stroke
+			(width 0)
+			(type default)
+		)
+		(uuid "0620c7ef-3132-4b3a-8594-a66179873b32")
+	)
 	(wire
 		(pts
 			(xy 156.21 76.2) (xy 156.21 64.77)
@@ -2068,7 +2077,7 @@
 	)
 	(wire
 		(pts
-			(xy 66.04 33.02) (xy 58.42 33.02)
+			(xy 58.42 33.02) (xy 68.58 33.02)
 		)
 		(stroke
 			(width 0)
@@ -2078,7 +2087,7 @@
 	)
 	(wire
 		(pts
-			(xy 66.04 33.02) (xy 66.04 40.64)
+			(xy 68.58 33.02) (xy 68.58 36.83)
 		)
 		(stroke
 			(width 0)
@@ -2098,13 +2107,13 @@
 	)
 	(wire
 		(pts
-			(xy 85.09 41.91) (xy 85.09 44.45)
+			(xy 85.09 44.45) (xy 85.09 40.64)
 		)
 		(stroke
 			(width 0)
 			(type default)
 		)
-		(uuid "49a4ef70-36fb-4e7f-b715-9f47a5736fdf")
+		(uuid "4c11e9c4-930c-4fa0-977c-3b01794720de")
 	)
 	(wire
 		(pts
@@ -2196,16 +2205,6 @@
 		)
 		(uuid "700904bd-4f58-4e9f-9186-38124b69cb9e")
 	)
-	(wire
-		(pts
-			(xy 85.09 36.83) (xy 85.09 33.02)
-		)
-		(stroke
-			(width 0)
-			(type default)
-		)
-		(uuid "71e23f50-8e2c-4de2-b8c7-1accd8ece580")
-	)
 	(wire
 		(pts
 			(xy 115.57 49.53) (xy 119.38 49.53)
@@ -2256,6 +2255,26 @@
 		)
 		(uuid "85b357ee-4552-4b18-bd19-e5eeb71a7b4b")
 	)
+	(wire
+		(pts
+			(xy 100.33 43.18) (xy 100.33 40.64)
+		)
+		(stroke
+			(width 0)
+			(type default)
+		)
+		(uuid "89163867-88c4-4d1c-a419-b0f04c36f287")
+	)
+	(wire
+		(pts
+			(xy 100.33 40.64) (xy 95.25 40.64)
+		)
+		(stroke
+			(width 0)
+			(type default)
+		)
+		(uuid "a3003d1a-6872-43e4-8bb5-1ebf457a99fd")
+	)
 	(wire
 		(pts
 			(xy 148.59 54.61) (xy 148.59 59.69)
@@ -2268,7 +2287,7 @@
 	)
 	(wire
 		(pts
-			(xy 66.04 45.72) (xy 66.04 49.53)
+			(xy 68.58 41.91) (xy 68.58 44.45)
 		)
 		(stroke
 			(width 0)
@@ -2306,6 +2325,16 @@
 		)
 		(uuid "b15eba4e-4ac5-443c-bad0-1f93a4790bc0")
 	)
+	(wire
+		(pts
+			(xy 85.09 40.64) (xy 90.17 40.64)
+		)
+		(stroke
+			(width 0)
+			(type default)
+		)
+		(uuid "b655dc3f-4719-423c-85af-c4e93cac13f4")
+	)
 	(wire
 		(pts
 			(xy 31.75 24.13) (xy 31.75 29.21)
@@ -2426,16 +2455,6 @@
 		)
 		(uuid "ddf88ee9-53e1-45c8-a78e-954f2567e6f9")
 	)
-	(wire
-		(pts
-			(xy 66.04 33.02) (xy 82.55 33.02)
-		)
-		(stroke
-			(width 0)
-			(type default)
-		)
-		(uuid "e5dbe2ac-f968-411e-82ed-a50a564dc6cb")
-	)
 	(wire
 		(pts
 			(xy 44.45 68.58) (xy 43.18 68.58)
@@ -2754,16 +2773,15 @@
 	)
 	(symbol
 		(lib_id "Device:C_Small")
-		(at 66.04 43.18 0)
+		(at 68.58 39.37 0)
 		(unit 1)
 		(exclude_from_sim no)
 		(in_bom yes)
 		(on_board yes)
 		(dnp no)
-		(fields_autoplaced yes)
 		(uuid "237b61f0-1fc2-48db-859e-b6db957618e4")
 		(property "Reference" "C1"
-			(at 68.58 41.9162 0)
+			(at 71.374 38.862 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -2771,8 +2789,8 @@
 				(justify left)
 			)
 		)
-		(property "Value" "0.1nF"
-			(at 68.58 44.4562 0)
+		(property "Value" "0.1uF"
+			(at 71.374 41.148 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -2781,7 +2799,7 @@
 			)
 		)
 		(property "Footprint" "Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder"
-			(at 66.04 43.18 0)
+			(at 68.58 39.37 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -2790,7 +2808,7 @@
 			)
 		)
 		(property "Datasheet" "~"
-			(at 66.04 43.18 0)
+			(at 68.58 39.37 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -2799,7 +2817,7 @@
 			)
 		)
 		(property "Description" "Unpolarized capacitor, small symbol"
-			(at 66.04 43.18 0)
+			(at 68.58 39.37 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -3185,34 +3203,31 @@
 	)
 	(symbol
 		(lib_id "Device:C_Small")
-		(at 85.09 39.37 0)
+		(at 92.71 40.64 270)
 		(unit 1)
 		(exclude_from_sim no)
 		(in_bom yes)
 		(on_board yes)
 		(dnp no)
-		(fields_autoplaced yes)
 		(uuid "719005cc-c0e0-40fe-95ec-36dc763b6787")
 		(property "Reference" "C2"
-			(at 87.63 38.1062 0)
+			(at 92.71 35.052 90)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(justify left)
 			)
 		)
-		(property "Value" "0.1nF"
-			(at 87.63 40.6462 0)
+		(property "Value" "0.1uF"
+			(at 92.71 37.592 90)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(justify left)
 			)
 		)
 		(property "Footprint" "Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder"
-			(at 85.09 39.37 0)
+			(at 92.71 40.64 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -3221,7 +3236,7 @@
 			)
 		)
 		(property "Datasheet" "~"
-			(at 85.09 39.37 0)
+			(at 92.71 40.64 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -3230,7 +3245,7 @@
 			)
 		)
 		(property "Description" "Unpolarized capacitor, small symbol"
-			(at 85.09 39.37 0)
+			(at 92.71 40.64 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -3660,6 +3675,72 @@
 			)
 		)
 	)
+	(symbol
+		(lib_id "power:GND2")
+		(at 100.33 43.18 0)
+		(unit 1)
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(dnp no)
+		(uuid "9aaba81d-04f2-4466-a094-f57596b2a4ee")
+		(property "Reference" "#PWR012"
+			(at 100.33 49.53 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Value" "GND2"
+			(at 97.536 47.498 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left)
+			)
+		)
+		(property "Footprint" ""
+			(at 100.33 43.18 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" ""
+			(at 100.33 43.18 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" "Power symbol creates a global label with name \"GND2\" , ground"
+			(at 100.33 43.18 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(pin "1"
+			(uuid "da80c997-a9e7-4673-8f5a-0daaeddebced")
+		)
+		(instances
+			(project "ch340_module"
+				(path "/7e631871-6669-4261-90f3-06812747e850"
+					(reference "#PWR012")
+					(unit 1)
+				)
+			)
+		)
+	)
 	(symbol
 		(lib_id "power:GND2")
 		(at 105.41 85.09 0)
@@ -3728,7 +3809,7 @@
 	)
 	(symbol
 		(lib_id "power:GND2")
-		(at 66.04 49.53 0)
+		(at 68.58 44.45 0)
 		(unit 1)
 		(exclude_from_sim no)
 		(in_bom yes)
@@ -3736,7 +3817,7 @@
 		(dnp no)
 		(uuid "a2467400-09e8-487a-802c-b7825f96ca7c")
 		(property "Reference" "#PWR05"
-			(at 66.04 55.88 0)
+			(at 68.58 50.8 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -3745,7 +3826,7 @@
 			)
 		)
 		(property "Value" "GND2"
-			(at 63.246 53.848 0)
+			(at 65.786 48.768 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -3754,7 +3835,7 @@
 			)
 		)
 		(property "Footprint" ""
-			(at 66.04 49.53 0)
+			(at 68.58 44.45 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -3763,7 +3844,7 @@
 			)
 		)
 		(property "Datasheet" ""
-			(at 66.04 49.53 0)
+			(at 68.58 44.45 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -3772,7 +3853,7 @@
 			)
 		)
 		(property "Description" "Power symbol creates a global label with name \"GND2\" , ground"
-			(at 66.04 49.53 0)
+			(at 68.58 44.45 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -3876,7 +3957,7 @@
 				(justify right)
 			)
 		)
-		(property "Value" "10K"
+		(property "Value" "4.7K"
 			(at 142.494 69.85 0)
 			(effects
 				(font
@@ -4146,7 +4227,7 @@
 				(justify left)
 			)
 		)
-		(property "Value" "10K"
+		(property "Value" "4.7K"
 			(at 107.95 74.9299 0)
 			(effects
 				(font

~ch340_module.kicad_sch.lck

@@ -0,0 +1 @@
+{"hostname":"BUBBLE","username":"serzh"}