From d1aa9d90f22d1f79fe31b62d0d542e563d302070 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?H=C3=A5kon=20L=C3=B8vdal?= <kode@denkule.no>
Date: Sun, 25 Feb 2018 17:58:16 +0100
Subject: [PATCH] Update schematic to match mbus_master_100

---
 Electrical/Board_003/mbus_master.sch | 339 ++++++++++++++-------------
 1 file changed, 174 insertions(+), 165 deletions(-)

diff --git a/Electrical/Board_003/mbus_master.sch b/Electrical/Board_003/mbus_master.sch
index 0aaa1d8d..45d83421 100644
--- a/Electrical/Board_003/mbus_master.sch
+++ b/Electrical/Board_003/mbus_master.sch
@@ -80,9 +80,21 @@ F 3 "" H 3250 3400 50  0001 C CNN
 	-1   0    0    1   
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 Wire Wire Line
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+	3250 3200 4200 3200
+Wire Wire Line
+	4200 3200 5300 3200
+Wire Wire Line
+	5300 3200 6700 3200
+Wire Wire Line
+	6700 3200 7550 3200
+Wire Wire Line
+	7550 3200 8450 3200
+Wire Wire Line
+	3100 3300 3250 3300
+Wire Wire Line
+	3250 3300 3600 3300
 Wire Wire Line
 	3600 3300 3600 3400
 Wire Wire Line
@@ -105,107 +117,91 @@ Connection ~ 3250 3200
 Text Label 3600 3200 1    60   ~ 0
 EXT_PWR
 Text Notes 2050 3350 0    60   ~ 0
-External power\n25-40V
+External power\n21-42V
 $Comp
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 U 1 1 5A6C56AB
-P 2300 6800
-F 0 "J1" H 2300 6900 50  0000 C CNN
-F 1 "Conn_01x02" H 2300 6600 50  0000 C CNN
-F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch1.27mm" H 2300 6800 50  0001 C CNN
-F 3 "" H 2300 6800 50  0001 C CNN
-	1    2300 6800
+P 1950 6800
+F 0 "J1" H 1950 6900 50  0000 C CNN
+F 1 "Conn_01x02" H 1950 6600 50  0000 C CNN
+F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch1.27mm" H 1950 6800 50  0001 C CNN
+F 3 "" H 1950 6800 50  0001 C CNN
+	1    1950 6800
 	-1   0    0    1   
 $EndComp
-Text Notes 1300 6800 0    60   ~ 0
+Text Notes 950  6800 0    60   ~ 0
 Input signal, TTL\nSendt to m-bus
 $Comp
 L GND #PWR04
 U 1 1 5A6C5767
-P 2650 6900
-F 0 "#PWR04" H 2650 6650 50  0001 C CNN
-F 1 "GND" H 2650 6750 50  0000 C CNN
-F 2 "" H 2650 6900 50  0001 C CNN
-F 3 "" H 2650 6900 50  0001 C CNN
-	1    2650 6900
+P 2300 6900
+F 0 "#PWR04" H 2300 6650 50  0001 C CNN
+F 1 "GND" H 2300 6750 50  0000 C CNN
+F 2 "" H 2300 6900 50  0001 C CNN
+F 3 "" H 2300 6900 50  0001 C CNN
+	1    2300 6900
 	1    0    0    -1  
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 Wire Wire Line
-	2500 6800 2650 6800
+	2150 6800 2300 6800
 Wire Wire Line
-	2650 6800 2650 6900
+	2300 6800 2300 6900
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 U 1 1 5A6C58F3
-P 3750 6700
-F 0 "Q1" H 3950 6775 50  0000 L CNN
-F 1 "BC337" H 3950 6700 50  0000 L CNN
-F 2 "TO_SOT_Packages_THT:TO-92_Molded_Narrow" H 3950 6625 50  0001 L CIN
-F 3 "" H 3750 6700 50  0001 L CNN
-	1    3750 6700
+P 3200 6700
+F 0 "Q1" H 3400 6775 50  0000 L CNN
+F 1 "BC337" H 3400 6700 50  0000 L CNN
+F 2 "TO_SOT_Packages_THT:TO-92_Molded_Narrow" H 3400 6625 50  0001 L CIN
+F 3 "" H 3200 6700 50  0001 L CNN
+	1    3200 6700
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-F 1 "1k" V 3200 6700 50  0000 C CNN
-F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3130 6700 50  0001 C CNN
-F 3 "" H 3200 6700 50  0001 C CNN
-	1    3200 6700
+P 2700 6700
+F 0 "R1" V 2780 6700 50  0000 C CNN
+F 1 "10k" V 2700 6700 50  0000 C CNN
+F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2630 6700 50  0001 C CNN
+F 3 "" H 2700 6700 50  0001 C CNN
+	1    2700 6700
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+	2150 6700 2400 6700
 Wire Wire Line
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+	2400 6700 2550 6700
+Wire Wire Line
+	2850 6700 3000 6700
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-F 1 "GND" H 3850 6950 50  0000 C CNN
-F 2 "" H 3850 7100 50  0001 C CNN
-F 3 "" H 3850 7100 50  0001 C CNN
-	1    3850 7100
+P 3300 7100
+F 0 "#PWR05" H 3300 6850 50  0001 C CNN
+F 1 "GND" H 3300 6950 50  0000 C CNN
+F 2 "" H 3300 7100 50  0001 C CNN
+F 3 "" H 3300 7100 50  0001 C CNN
+	1    3300 7100
 	1    0    0    -1  
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 Wire Wire Line
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+	3300 6900 3300 7100
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-F 2 "Diodes_THT:D_A-405_P7.62mm_Horizontal" V 5750 3500 50  0001 C CNN
-F 3 "" V 5750 3500 50  0001 C CNN
-	1    5750 3500
+P 6700 3550
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+F 2 "Diodes_THT:D_A-405_P7.62mm_Horizontal" V 6700 3550 50  0001 C CNN
+F 3 "" V 6700 3550 50  0001 C CNN
+	1    6700 3550
 	0    1    1    0   
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-$Comp
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-U 1 1 5A6C5BFD
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-F 2 "" H 5750 4800 50  0001 C CNN
-F 3 "" H 5750 4800 50  0001 C CNN
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-	1    0    0    -1  
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-	5750 3200 5750 3400
-Wire Wire Line
-	5750 3600 5750 4300
-Wire Wire Line
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-Wire Wire Line
-	4700 4000 7250 4000
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+	6700 4350 7250 4350
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 U 1 1 5A6C5F4D
@@ -221,7 +217,7 @@ Wire Wire Line
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 	8450 3350 8450 3200
-Connection ~ 5750 3200
+Connection ~ 6700 3200
 Text Label 8100 3200 0    60   ~ 0
 MBus+
 Text Label 8100 3750 0    60   ~ 0
@@ -229,12 +225,12 @@ MBus-
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-F 0 "Q4" H 7650 4075 50  0000 L CNN
-F 1 "BD136" H 7650 4000 50  0000 L CNN
-F 2 "TO_SOT_Packages_THT:TO-126_Vertical" H 7650 3925 50  0001 L CIN
-F 3 "" H 7450 4000 50  0001 L CNN
-	1    7450 4000
+P 7450 4350
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+F 1 "BD136" H 7650 4350 50  0000 L CNN
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+F 3 "" H 7450 4350 50  0001 L CNN
+	1    7450 4350
 	1    0    0    1   
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 Wire Wire Line
@@ -243,16 +239,16 @@ Connection ~ 7550 3200
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 L GND #PWR07
 U 1 1 5A6C640E
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-F 1 "GND" H 7550 4650 50  0000 C CNN
-F 2 "" H 7550 4800 50  0001 C CNN
-F 3 "" H 7550 4800 50  0001 C CNN
-	1    7550 4800
+P 7550 5250
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+F 1 "GND" H 7550 5100 50  0000 C CNN
+F 2 "" H 7550 5250 50  0001 C CNN
+F 3 "" H 7550 5250 50  0001 C CNN
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@@ -263,7 +259,9 @@ Connection ~ 7550 3750
 Text Notes 9250 3450 0    60   ~ 0
 M-bus output signal
 Wire Wire Line
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+	7550 3650 7550 3750
+Wire Wire Line
+	7550 3750 7550 4150
 Text Notes 3000 1650 0    60   ~ 0
 Schematic based on https://github.com/rscada/libmbus/blob/master/hardware/MBus_USB.pdf\nmentioned in https://electronics.stackexchange.com/a/214477/568.\n\nRemoved all Rx support. Made more robust by using a zener diode so that the voltage drop is exact and that supply voltage does not matter.
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@@ -286,109 +284,120 @@ F 3 "" H 7550 3500 50  0001 C CNN
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-L R R5
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-F 3 "" H 5750 4450 50  0001 C CNN
-	1    5750 4450
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+F 3 "" H 3300 6000 50  0001 C CNN
+	1    3300 6000
+	1    0    0    -1  
+$EndComp
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+Wire Wire Line
+	6700 3650 6700 4350
+Wire Wire Line
+	6700 4350 6700 4350
+Wire Wire Line
+	6700 4350 6700 5850
+Connection ~ 6700 4350
+Wire Wire Line
+	6700 5850 3300 5850
+$Comp
+L BC337 Q?
+U 1 1 5A92F34B
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-F 3 "" H 4900 4800 50  0001 L CNN
-	1    4900 4800
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+U 1 1 5A92F352
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+F 3 "" H 4200 5050 50  0001 C CNN
+	1    4200 5050
 	1    0    0    -1  
 $EndComp
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+	4200 4850 4200 5050
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-U 1 1 5A70EDBB
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-F 3 "" H 4200 5100 50  0001 L CNN
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-$EndComp
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 	1    0    0    -1  
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 	0    1    1    0   
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+$Comp
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 Wire Wire Line
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-Current limit, ca 8mA
-Wire Wire Line
-	4700 6500 4700 5700
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