add resistors at nc of relay to pull input low if channel is muted

schematic/relayboard_muting/relayboard_muting-cache.lib

@@ -156,6 +156,23 @@ X A 2 150 0 100 L 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# Device_R
+#
+DEF Device_R R 0 0 N Y 1 F N
+F0 "R" 80 0 50 V V C CNN
+F1 "Device_R" 0 0 50 V V C CNN
+F2 "" -70 0 50 V I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ R_*
+$ENDFPLIST
+DRAW
+S -40 -100 40 100 0 1 10 N
+X ~ 1 0 150 50 D 50 50 1 1 P
+X ~ 2 0 -150 50 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # nec-eb2-12nu_NEC-EB2-12NU
 #
 DEF nec-eb2-12nu_NEC-EB2-12NU U 0 40 Y Y 1 F N

schematic/relayboard_muting/relayboard_muting.sch

@@ -307,4 +307,303 @@ Wire Wire Line
 Connection ~ 1350 1300
 Wire Wire Line
 	1350 1300 1300 1300
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+F 3 "~" H 3000 850 50  0001 C CNN
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+F 3 "~" H 3000 950 50  0001 C CNN
+	1    3000 950 
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+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 1050 50  0001 C CNN
+F 3 "~" H 3000 1050 50  0001 C CNN
+	1    3000 1050
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+$EndComp
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+F 3 "~" H 3000 1150 50  0001 C CNN
+	1    3000 1150
+	0    1    1    0   
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+F 3 "~" H 3000 1250 50  0001 C CNN
+	1    3000 1250
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R6
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+F 3 "~" H 3000 1350 50  0001 C CNN
+	1    3000 1350
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R7
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+F 0 "R7" V 2950 1700 50  0000 C CNN
+F 1 "10" V 3000 1450 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 1450 50  0001 C CNN
+F 3 "~" H 3000 1450 50  0001 C CNN
+	1    3000 1450
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R8
+U 1 1 5D3B59AA
+P 3000 1550
+F 0 "R8" V 2950 1800 50  0000 C CNN
+F 1 "10" V 3000 1550 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 1550 50  0001 C CNN
+F 3 "~" H 3000 1550 50  0001 C CNN
+	1    3000 1550
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R9
+U 1 1 5D3B59CE
+P 3000 1650
+F 0 "R9" V 2950 1900 50  0000 C CNN
+F 1 "10" V 3000 1650 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 1650 50  0001 C CNN
+F 3 "~" H 3000 1650 50  0001 C CNN
+	1    3000 1650
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R10
+U 1 1 5D3B59FA
+P 3000 1750
+F 0 "R10" V 2950 2000 50  0000 C CNN
+F 1 "10" V 3000 1750 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 1750 50  0001 C CNN
+F 3 "~" H 3000 1750 50  0001 C CNN
+	1    3000 1750
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R11
+U 1 1 5D3B5A22
+P 3000 1850
+F 0 "R11" V 2950 2100 50  0000 C CNN
+F 1 "10" V 3000 1850 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 1850 50  0001 C CNN
+F 3 "~" H 3000 1850 50  0001 C CNN
+	1    3000 1850
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R12
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+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 1950 50  0001 C CNN
+F 3 "~" H 3000 1950 50  0001 C CNN
+	1    3000 1950
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R13
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+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 2050 50  0001 C CNN
+F 3 "~" H 3000 2050 50  0001 C CNN
+	1    3000 2050
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R14
+U 1 1 5D3B5AA6
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+F 0 "R14" V 2950 2400 50  0000 C CNN
+F 1 "10" V 3000 2150 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 2150 50  0001 C CNN
+F 3 "~" H 3000 2150 50  0001 C CNN
+	1    3000 2150
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R15
+U 1 1 5D3B5AD6
+P 3000 2250
+F 0 "R15" V 2950 2500 50  0000 C CNN
+F 1 "10" V 3000 2250 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 2250 50  0001 C CNN
+F 3 "~" H 3000 2250 50  0001 C CNN
+	1    3000 2250
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R R16
+U 1 1 5D3B5B08
+P 3000 2350
+F 0 "R16" V 2950 2600 50  0000 C CNN
+F 1 "10" V 3000 2350 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2930 2350 50  0001 C CNN
+F 3 "~" H 3000 2350 50  0001 C CNN
+	1    3000 2350
+	0    1    1    0   
+$EndComp
+Wire Wire Line
+	2850 2350 2700 2350
+Wire Wire Line
+	2700 2250 2850 2250
+Wire Wire Line
+	2850 2150 2700 2150
+Wire Wire Line
+	2700 2050 2850 2050
+Wire Wire Line
+	2850 1950 2700 1950
+Wire Wire Line
+	2700 1850 2850 1850
+Wire Wire Line
+	2850 1750 2700 1750
+Wire Wire Line
+	2700 1650 2850 1650
+Wire Wire Line
+	2850 1550 2700 1550
+Wire Wire Line
+	2700 1450 2850 1450
+Wire Wire Line
+	2850 1350 2700 1350
+Wire Wire Line
+	2700 1250 2850 1250
+Wire Wire Line
+	2850 1150 2700 1150
+Wire Wire Line
+	2700 1050 2850 1050
+Wire Wire Line
+	2850 950  2700 950 
+Wire Wire Line
+	2700 850  2850 850 
+$Comp
+L power:GNDA #PWR013
+U 1 1 5D3D6744
+P 3800 2400
+F 0 "#PWR013" H 3800 2150 50  0001 C CNN
+F 1 "GNDA" H 3805 2227 50  0000 C CNN
+F 2 "" H 3800 2400 50  0001 C CNN
+F 3 "" H 3800 2400 50  0001 C CNN
+	1    3800 2400
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	3800 2400 3800 2350
+Wire Wire Line
+	3800 2350 3150 2350
+Wire Wire Line
+	3150 2250 3800 2250
+Wire Wire Line
+	3800 2250 3800 2350
+Connection ~ 3800 2350
+Wire Wire Line
+	3150 2150 3800 2150
+Wire Wire Line
+	3800 2150 3800 2250
+Connection ~ 3800 2250
+Wire Wire Line
+	3150 2050 3800 2050
+Wire Wire Line
+	3800 2050 3800 2150
+Connection ~ 3800 2150
+Wire Wire Line
+	3150 1950 3800 1950
+Wire Wire Line
+	3800 1950 3800 2050
+Connection ~ 3800 2050
+Wire Wire Line
+	3150 1850 3800 1850
+Wire Wire Line
+	3800 1850 3800 1950
+Connection ~ 3800 1950
+Wire Wire Line
+	3150 1750 3800 1750
+Wire Wire Line
+	3800 1750 3800 1850
+Connection ~ 3800 1850
+Wire Wire Line
+	3150 1650 3800 1650
+Wire Wire Line
+	3800 1650 3800 1750
+Connection ~ 3800 1750
+Wire Wire Line
+	3150 1550 3800 1550
+Wire Wire Line
+	3800 1550 3800 1650
+Connection ~ 3800 1650
+Wire Wire Line
+	3150 1450 3800 1450
+Wire Wire Line
+	3800 1450 3800 1550
+Connection ~ 3800 1550
+Wire Wire Line
+	3150 1350 3800 1350
+Wire Wire Line
+	3800 1350 3800 1450
+Connection ~ 3800 1450
+Wire Wire Line
+	3150 1250 3800 1250
+Wire Wire Line
+	3800 1250 3800 1350
+Connection ~ 3800 1350
+Wire Wire Line
+	3150 1150 3800 1150
+Wire Wire Line
+	3800 1150 3800 1250
+Connection ~ 3800 1250
+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 3800 1150
+Wire Wire Line
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+Wire Wire Line
+	3800 950  3800 1050
+Connection ~ 3800 1050
+Wire Wire Line
+	3150 850  3800 850 
+Wire Wire Line
+	3800 850  3800 950 
+Connection ~ 3800 950 
+NoConn ~ 1000 2650
 $EndSCHEMATC