Update schematic to match mbus_master_100

2026-01-16 00:33:14 +00:00 · 2018-02-25 17:58:16 +01:00 · 2018-02-25 17:58:16 +01:00 · d1aa9d90f2
commit d1aa9d90f2
parent d9f38acc7a
1 changed files with 174 additions and 165 deletions
--- 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
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+Wire Wire Line
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 Wire Wire Line
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 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
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-Text Notes 1300 6800 0    60   ~ 0
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 Input signal, TTL\nSendt to m-bus
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@ -221,7 +217,7 @@ Wire Wire Line
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 Text Label 8100 3200 0    60   ~ 0
 MBus+
 Text Label 8100 3750 0    60   ~ 0
@ -229,12 +225,12 @@ MBus-
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 Wire Wire Line
@ -243,16 +239,16 @@ Connection ~ 7550 3200
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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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 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.
 Wire Notes Line
@ -286,109 +284,120 @@ F 3 "" H 7550 3500 50  0001 C CNN
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