started on the firmware, added BOM

[nixiedisp] / hw / nixiedisp.sch

diff --git a/hw/nixiedisp.sch b/hw/nixiedisp.sch
index 1e11a39..3f01b3b 100644 (file)
--- a/hw/nixiedisp.sch
+++ b/hw/nixiedisp.sch
@@ -5,13 +5,13 @@ $Descr A4 8268 11693 portrait
 encoding utf-8
 Sheet 1 7
 Title "USB nixie tube display"
 encoding utf-8
 Sheet 1 7
 Title "USB nixie tube display"

-Date ""
-Rev ""
+Date "2020-12-27"
+Rev "1"

 Comp ""
 Comment1 ""
 Comp ""
 Comment1 ""

-Comment2 ""
-Comment3 ""
-Comment4 ""
+Comment2 "https://github.com/jtsiomb/nixiedisp"
+Comment3 "Free hardware design. License: GNU GPLv3 (or later)"
+Comment4 "Copyright © John Tsiombikas <nuclear@member.fsf.org>"

 $EndDescr
 $Comp
 L nixiedisp:IN14 U8
 $EndDescr
 $Comp
 L nixiedisp:IN14 U8

@@ -1086,8 +1086,6 @@ Text Label 2150 2550 0    50   ~ 0
 MOSI
 Text Label 2150 2650 0    50   ~ 0
 MISO
 MOSI
 Text Label 2150 2650 0    50   ~ 0
 MISO

-Wire Wire Line
-       2050 2750 2350 2750

 Text Label 2150 2750 0    50   ~ 0
 SCK
 $Comp
 Text Label 2150 2750 0    50   ~ 0
 SCK
 $Comp

@@ -1113,26 +1111,14 @@ F 3 "" H 1200 1750 50  0001 C CNN
        1    0    0    -1  
 $EndComp
 Wire Wire Line
        1    0    0    -1  
 $EndComp
 Wire Wire Line

-       1700 1150 2450 1150
-Wire Wire Line
-       2450 1150 2450 2650
-Wire Wire Line

        2050 2650 2450 2650
 Wire Wire Line
        2050 2650 2450 2650
 Wire Wire Line

-       1700 1250 2400 1250
-Wire Wire Line
-       2400 1250 2400 2550
-Wire Wire Line

        2050 2550 2400 2550
 Wire Wire Line
        2050 2550 2400 2550
 Wire Wire Line

-       1700 1350 2350 1350
-Wire Wire Line
-       2350 1350 2350 2750
-Wire Wire Line
-       1700 1450 2000 1450
-Text Label 1750 1450 0    50   ~ 0
+       1700 1450 1850 1450
+Text Label 1700 1450 0    50   ~ 0

 ~RST
 ~RST

-Text Label 2150 3750 0    50   ~ 0
+Text Label 2100 3750 0    50   ~ 0

 ~RST
 $Comp
 L Device:Crystal_Small Y1
 ~RST
 $Comp
 L Device:Crystal_Small Y1

@@ -1203,23 +1189,21 @@ F 3 "" H 3100 2800 50  0001 C CNN
        1    0    0    -1  
 $EndComp
 Wire Wire Line
        1    0    0    -1  
 $EndComp
 Wire Wire Line

-       2050 2250 3500 2250
+       2050 2250 3700 2250

 Wire Wire Line
 Wire Wire Line

-       3500 2250 3500 1650
+       3700 2250 3700 1650

 Wire Wire Line
 Wire Wire Line

-       3500 1650 3750 1650
+       3700 1650 3750 1650

 Wire Wire Line
 Wire Wire Line

-       2050 2350 3550 2350
+       3600 2350 3600 4650

 Wire Wire Line
 Wire Wire Line

-       3550 2350 3550 4650
+       3600 4650 3750 4650

 Wire Wire Line
 Wire Wire Line

-       3550 4650 3750 4650
+       2050 2450 3550 2450

 Wire Wire Line
 Wire Wire Line

-       2050 2450 3450 2450
+       3550 2450 3550 7650

 Wire Wire Line
 Wire Wire Line

-       3450 2450 3450 7650
-Wire Wire Line
-       3450 7650 3750 7650
+       3550 7650 3750 7650

 Text Label 2150 2250 0    50   ~ 0
 CK1
 Text Label 2150 2350 0    50   ~ 0
 Text Label 2150 2250 0    50   ~ 0
 CK1
 Text Label 2150 2350 0    50   ~ 0

@@ -1231,20 +1215,18 @@ RXD
 Text Label 2150 4050 0    50   ~ 0
 TXD
 Wire Wire Line
 Text Label 2150 4050 0    50   ~ 0
 TXD
 Wire Wire Line

-       3350 3150 3350 1350
-Wire Wire Line
-       3350 1350 3750 1350
+       3500 3150 3500 2150

 Wire Wire Line
 Wire Wire Line

-       3350 3150 3350 4350
+       3500 3150 3500 4350

 Wire Wire Line
 Wire Wire Line

-       3350 4350 3750 4350
-Connection ~ 3350 3150
+       3500 4350 3750 4350
+Connection ~ 3500 3150

 Wire Wire Line
 Wire Wire Line

-       3350 4350 3350 7350
+       3500 4350 3500 7350

 Wire Wire Line
 Wire Wire Line

-       3350 7350 3750 7350
-Connection ~ 3350 4350
-Text Label 3150 3150 0    50   ~ 0
+       3500 7350 3750 7350
+Connection ~ 3500 4350
+Text Label 3350 3150 0    50   ~ 0

 SD
 Wire Wire Line
        3750 4450 3650 4450
 SD
 Wire Wire Line
        3750 4450 3650 4450

@@ -1261,77 +1243,47 @@ Wire Wire Line
        3650 6850 3750 6850
 Connection ~ 3750 6850
 Wire Wire Line
        3650 6850 3750 6850
 Connection ~ 3750 6850
 Wire Wire Line

-       2050 3150 3350 3150
+       2050 3150 3500 3150

 Wire Wire Line
        2950 2800 3100 2800
 Connection ~ 2950 2800
 $Comp
 Wire Wire Line
        2950 2800 3100 2800
 Connection ~ 2950 2800
 $Comp

-L Device:LED D2
-U 1 1 609F4D0B
-P 2750 4950
-F 0 "D2" V 2850 5000 50  0000 C CNN
-F 1 "LEDBOT" H 2650 5100 50  0000 C CNN
-F 2 "LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 2750 4950 50  0001 C CNN
-F 3 "~" H 2750 4950 50  0001 C CNN
-       1    2750 4950
-       0    -1   -1   0   
-$EndComp
-$Comp
-L Device:LED D3
-U 1 1 609F5936
-P 2900 4950
-F 0 "D3" V 3000 4900 50  0000 C CNN
-F 1 "LEDTOP" H 2800 4800 50  0000 C CNN
-F 2 "LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 2900 4950 50  0001 C CNN
-F 3 "~" H 2900 4950 50  0001 C CNN
-       1    2900 4950
-       0    -1   -1   0   
-$EndComp
-Wire Wire Line
-       2900 4800 2750 4800
-$Comp

 L Device:R R6
 U 1 1 60A28AF7
 L Device:R R6
 U 1 1 60A28AF7

-P 2900 5300
-F 0 "R6" H 2850 5450 50  0000 C CNN
-F 1 "330R" V 2900 5300 50  0000 C CNN
-F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2830 5300 50  0001 C CNN
-F 3 "~" H 2900 5300 50  0001 C CNN
-       1    2900 5300
+P 2750 5000
+F 0 "R6" H 2700 5150 50  0000 C CNN
+F 1 "330R" V 2750 5000 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2680 5000 50  0001 C CNN
+F 3 "~" H 2750 5000 50  0001 C CNN
+       1    2750 5000

        -1   0    0    1   
 $EndComp
 $Comp
 L Device:R R5
 U 1 1 60A29040
        -1   0    0    1   
 $EndComp
 $Comp
 L Device:R R5
 U 1 1 60A29040

-P 2750 5300
-F 0 "R5" H 2850 5450 50  0000 C CNN
-F 1 "330R" V 2750 5300 50  0000 C CNN
-F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2680 5300 50  0001 C CNN
-F 3 "~" H 2750 5300 50  0001 C CNN
-       1    2750 5300
+P 2650 5000
+F 0 "R5" H 2750 5150 50  0000 C CNN
+F 1 "330R" V 2650 5000 50  0000 C CNN
+F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 2580 5000 50  0001 C CNN
+F 3 "~" H 2650 5000 50  0001 C CNN
+       1    2650 5000

        -1   0    0    1   
 $EndComp
 Wire Wire Line
        -1   0    0    1   
 $EndComp
 Wire Wire Line

-       2900 5100 2900 5150
-Wire Wire Line
-       2750 5100 2750 5150
+       2650 4800 2650 4850

 $Comp
 L power:GND #PWR016
 U 1 1 60AA096E
 $Comp
 L power:GND #PWR016
 U 1 1 60AA096E

-P 2900 5550
-F 0 "#PWR016" H 2900 5300 50  0001 C CNN
-F 1 "GND" H 2905 5377 50  0000 C CNN
-F 2 "" H 2900 5550 50  0001 C CNN
-F 3 "" H 2900 5550 50  0001 C CNN
-       1    2900 5550
+P 2750 5700
+F 0 "#PWR016" H 2750 5450 50  0001 C CNN
+F 1 "GND" H 2755 5527 50  0000 C CNN
+F 2 "" H 2750 5700 50  0001 C CNN
+F 3 "" H 2750 5700 50  0001 C CNN
+       1    2750 5700

        1    0    0    -1  
 $EndComp
 Wire Wire Line
        1    0    0    -1  
 $EndComp
 Wire Wire Line

-       2900 5450 2900 5550
-Wire Wire Line
-       2900 5550 2750 5550
-Wire Wire Line
-       2750 5550 2750 5450
+       2750 5150 2750 5350

 $Sheet
 S 5350 5400 850  1250
 U 603EFAE2
 $Sheet
 S 5350 5400 850  1250
 U 603EFAE2

@@ -1385,59 +1337,59 @@ EDOT
 Text Label 5150 9150 0    50   ~ 0
 FDOT
 Wire Wire Line
 Text Label 5150 9150 0    50   ~ 0
 FDOT
 Wire Wire Line

-       3100 4150 3100 3250
+       3100 4150 3100 3500

 Wire Wire Line
 Wire Wire Line

-       3100 3250 5000 3250
+       3100 3500 5000 3500

 Wire Wire Line
 Wire Wire Line

-       5000 3250 5000 1650
+       5000 3500 5000 1650

 Wire Wire Line
        5000 1650 5350 1650
 Wire Wire Line
        2050 4150 3100 4150
 Wire Wire Line
 Wire Wire Line
        5000 1650 5350 1650
 Wire Wire Line
        2050 4150 3100 4150
 Wire Wire Line

-       3150 4250 3150 3300
+       3150 4250 3150 3550

 Wire Wire Line
 Wire Wire Line

-       3150 3300 5150 3300
+       3150 3550 5150 3550

 Wire Wire Line
 Wire Wire Line

-       5150 3300 5150 3150
+       5150 3550 5150 3150

 Wire Wire Line
        2050 4250 3150 4250
 Wire Wire Line
 Wire Wire Line
        2050 4250 3150 4250
 Wire Wire Line

-       3200 4350 3200 3350
+       3200 4350 3200 3600

 Wire Wire Line
 Wire Wire Line

-       3200 3350 5000 3350
+       3200 3600 5000 3600

 Wire Wire Line
 Wire Wire Line

-       5000 3350 5000 4650
+       5000 3600 5000 4650

 Wire Wire Line
        5000 4650 5350 4650
 Wire Wire Line
        2050 4350 3200 4350
 Wire Wire Line
 Wire Wire Line
        5000 4650 5350 4650
 Wire Wire Line
        2050 4350 3200 4350
 Wire Wire Line

-       3250 4450 3250 6150
+       3350 4450 3350 6150

 Wire Wire Line
 Wire Wire Line

-       3250 6150 5350 6150
+       3350 6150 5350 6150

 Wire Wire Line
 Wire Wire Line

-       2050 4450 3250 4450
+       2050 4450 3350 4450

 Wire Wire Line
 Wire Wire Line

-       3200 4550 3200 6200
+       3300 4550 3300 6200

 Wire Wire Line
 Wire Wire Line

-       3200 6200 5000 6200
+       3300 6200 5000 6200

 Wire Wire Line
        5000 6200 5000 7650
 Wire Wire Line
        5000 7650 5350 7650
 Wire Wire Line
 Wire Wire Line
        5000 6200 5000 7650
 Wire Wire Line
        5000 7650 5350 7650
 Wire Wire Line

-       2050 4550 3200 4550
+       2050 4550 3300 4550

 Wire Wire Line
 Wire Wire Line

-       3150 4650 3150 6250
+       3250 4650 3250 6250

 Wire Wire Line
 Wire Wire Line

-       3150 6250 4950 6250
+       3250 6250 4950 6250

 Wire Wire Line
        4950 6250 4950 9150
 Wire Wire Line
        4950 9150 5350 9150
 Wire Wire Line
 Wire Wire Line
        4950 6250 4950 9150
 Wire Wire Line
        4950 9150 5350 9150
 Wire Wire Line

-       2050 4650 3150 4650
+       2050 4650 3250 4650

 Text Label 5150 1050 0    50   ~ 0
 A0
 Text Label 5150 1150 0    50   ~ 0
 Text Label 5150 1050 0    50   ~ 0
 A0
 Text Label 5150 1150 0    50   ~ 0

@@ -1486,14 +1438,10 @@ Text Label 5150 8750 0    50   ~ 0
 F2
 Text Label 5150 8850 0    50   ~ 0
 F3
 F2
 Text Label 5150 8850 0    50   ~ 0
 F3

-Connection ~ 2900 5550
-Wire Wire Line
-       2900 4800 2900 3250
-Connection ~ 2900 4800

 Text Label 2200 3250 0    50   ~ 0
 HRSEP
 Wire Wire Line
 Text Label 2200 3250 0    50   ~ 0
 HRSEP
 Wire Wire Line

-       2900 3250 2050 3250
+       2750 3250 2050 3250

 Wire Wire Line
        1150 9750 1100 9750
 Wire Wire Line
 Wire Wire Line
        1150 9750 1100 9750
 Wire Wire Line

@@ -1542,18 +1490,6 @@ F 3 "" H 1850 9750 50  0001 C CNN
        1    0    0    -1  
 $EndComp
 Connection ~ 800  8200
        1    0    0    -1  
 $EndComp
 Connection ~ 800  8200

-$Comp
-L Device:C C4
-U 1 1 61166BC4
-P 1850 9900
-F 0 "C4" H 1965 9946 50  0000 L CNN
-F 1 "0.1uF" H 1965 9855 50  0000 L CNN
-F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 1888 9750 50  0001 C CNN
-F 3 "~" H 1850 9900 50  0001 C CNN
-       1    1850 9900
-       1    0    0    -1  
-$EndComp
-Connection ~ 1850 9750

 Wire Wire Line
        3350 8800 2900 8800
 $Comp
 Wire Wire Line
        3350 8800 2900 8800
 $Comp

@@ -1634,7 +1570,7 @@ Wire Wire Line
 Wire Wire Line
        2050 3950 2450 3950
 Wire Wire Line
 Wire Wire Line
        2050 3950 2450 3950
 Wire Wire Line

-       2050 3750 2300 3750
+       2050 3750 2250 3750

 $Comp
 L Device:C_Small C6
 U 1 1 616E0218
 $Comp
 L Device:C_Small C6
 U 1 1 616E0218

@@ -1702,7 +1638,6 @@ F 3 "" H 1800 5650 50  0001 C CNN
        1    1800 5650
        1    0    0    -1  
 $EndComp
        1    1800 5650
        1    0    0    -1  
 $EndComp

-NoConn ~ 2050 3350

 NoConn ~ 2050 3450
 NoConn ~ 2050 3550
 NoConn ~ 2050 3650
 NoConn ~ 2050 3450
 NoConn ~ 2050 3550
 NoConn ~ 2050 3650

@@ -1803,23 +1738,23 @@ Wire Wire Line
 $Comp
 L power:GND #PWR019
 U 1 1 61B0EE96
 $Comp
 L power:GND #PWR019
 U 1 1 61B0EE96

-P 3300 10950
-F 0 "#PWR019" H 3300 10700 50  0001 C CNN
-F 1 "GND" H 3300 10800 50  0000 C CNN
-F 2 "" H 3300 10950 50  0001 C CNN
-F 3 "" H 3300 10950 50  0001 C CNN
-       1    3300 10950
+P 3400 10950
+F 0 "#PWR019" H 3400 10700 50  0001 C CNN
+F 1 "GND" H 3400 10800 50  0000 C CNN
+F 2 "" H 3400 10950 50  0001 C CNN
+F 3 "" H 3400 10950 50  0001 C CNN
+       1    3400 10950

        1    0    0    -1  
 $EndComp
 $Comp
 L power:VCC #PWR018
 U 1 1 61B3194F
        1    0    0    -1  
 $EndComp
 $Comp
 L power:VCC #PWR018
 U 1 1 61B3194F

-P 3300 10750
-F 0 "#PWR018" H 3300 10600 50  0001 C CNN
-F 1 "VCC" H 3300 10900 50  0000 C CNN
-F 2 "" H 3300 10750 50  0001 C CNN
-F 3 "" H 3300 10750 50  0001 C CNN
-       1    3300 10750
+P 3400 10750
+F 0 "#PWR018" H 3400 10600 50  0001 C CNN
+F 1 "VCC" H 3400 10900 50  0000 C CNN
+F 2 "" H 3400 10750 50  0001 C CNN
+F 3 "" H 3400 10750 50  0001 C CNN
+       1    3400 10750

        1    0    0    -1  
 $EndComp
 Wire Wire Line
        1    0    0    -1  
 $EndComp
 Wire Wire Line

@@ -1828,10 +1763,10 @@ Connection ~ 3700 8400
 Wire Wire Line
        3700 8400 3700 8500
 Wire Wire Line
 Wire Wire Line
        3700 8400 3700 8500
 Wire Wire Line

-       3000 10750 3300 10750
+       3000 10750 3250 10750

 Connection ~ 3000 10750
 Wire Wire Line
 Connection ~ 3000 10750
 Wire Wire Line

-       3000 10950 3300 10950
+       3000 10950 3250 10950

 Connection ~ 3000 10950
 Text Notes 2250 10550 0    50   ~ 0
 bypass capacitors
 Connection ~ 3000 10950
 Text Notes 2250 10550 0    50   ~ 0
 bypass capacitors

@@ -1918,4 +1853,236 @@ Text Label 7350 7550 0    50   ~ 0
 EA
 Text Label 7350 9050 0    50   ~ 0
 FA
 EA
 Text Label 7350 9050 0    50   ~ 0
 FA

+Wire Wire Line
+       1700 1350 2100 1350
+Wire Wire Line
+       3500 2150 3600 2150
+Wire Wire Line
+       3600 2150 3600 1350
+Wire Wire Line
+       3600 1350 3750 1350
+Wire Wire Line
+       2400 2550 2400 1950
+Wire Wire Line
+       2400 1950 2000 1950
+Wire Wire Line
+       2000 1950 2000 1250
+Wire Wire Line
+       2000 1250 1700 1250
+Wire Wire Line
+       2450 2650 2450 1900
+Wire Wire Line
+       2450 1900 2050 1900
+Wire Wire Line
+       2050 1900 2050 1150
+Wire Wire Line
+       2050 1150 1700 1150
+Wire Wire Line
+       2050 2350 3600 2350
+Wire Wire Line
+       2500 2750 2500 1850
+Wire Wire Line
+       2500 1850 2100 1850
+Wire Wire Line
+       2100 1850 2100 1350
+Wire Wire Line
+       2050 2750 2500 2750
+Text Label 2100 3350 0    50   ~ 0
+RTC_CE
+Text Label 2150 1300 0    50   ~ 0
+RTC_CE
+Wire Wire Line
+       3200 3350 3200 2150
+Wire Wire Line
+       3200 2150 2550 2150
+Wire Wire Line
+       2550 2150 2550 1800
+Wire Wire Line
+       2550 1800 2150 1800
+Wire Wire Line
+       2150 1800 2150 1300
+Wire Wire Line
+       2050 3350 3200 3350
+Wire Wire Line
+       2050 600  2050 1150
+Connection ~ 2050 1150
+Text Label 1700 1150 0    50   ~ 0
+MISO
+Text Label 1700 1250 0    50   ~ 0
+MOSI
+Text Label 1700 1350 0    50   ~ 0
+SCK
+Text Label 3050 1000 0    50   ~ 0
+VBATT
+Wire Wire Line
+       2750 3250 2750 4800
+Wire Wire Line
+       2650 4800 2750 4800
+Connection ~ 2750 4800
+Wire Wire Line
+       2750 4800 2750 4850
+$Comp
+L Connector:Conn_01x03_Female J5
+U 1 1 62CC4273
+P 2950 5450
+F 0 "J5" H 2978 5476 50  0000 L CNN
+F 1 "HRLEDS" H 2800 5250 50  0000 L CNN
+F 2 "Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical" H 2950 5450 50  0001 C CNN
+F 3 "~" H 2950 5450 50  0001 C CNN
+       1    2950 5450
+       1    0    0    -1  
+$EndComp
+Wire Wire Line
+       2650 5450 2750 5450
+Wire Wire Line
+       2650 5150 2650 5450
+Wire Wire Line
+       2750 5550 2750 5700
+$Comp
+L Device:Crystal_Small Y2
+U 1 1 623FC7B6
+P 2450 1550
+F 0 "Y2" V 2350 1350 50  0000 L CNN
+F 1 "32.768KHz" V 2600 1300 50  0000 L CNN
+F 2 "Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm_HandSoldering" H 2450 1550 50  0001 C CNN
+F 3 "~" H 2450 1550 50  0001 C CNN
+F 4 "6pF" H 2450 1550 50  0001 C CNN "load"
+       1    2450 1550
+       0    1    1    0   
+$EndComp
+Wire Wire Line
+       2450 1650 2550 1650
+Wire Wire Line
+       2450 1450 2550 1450
+$Comp
+L power:GND #PWR0138
+U 1 1 62634E4F
+P 3050 1800
+F 0 "#PWR0138" H 3050 1550 50  0001 C CNN
+F 1 "GND" H 3050 1650 50  0000 C CNN
+F 2 "" H 3050 1800 50  0001 C CNN
+F 3 "" H 3050 1800 50  0001 C CNN
+       1    3050 1800
+       1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR0139
+U 1 1 6289505D
+P 3400 850
+F 0 "#PWR0139" H 3400 600 50  0001 C CNN
+F 1 "GND" H 3400 700 50  0000 C CNN
+F 2 "" H 3400 850 50  0001 C CNN
+F 3 "" H 3400 850 50  0001 C CNN
+       1    3400 850 
+       1    0    0    -1  
+$EndComp
+Connection ~ 3050 750 
+$Comp
+L power:PWR_FLAG #FLG0103
+U 1 1 62B59C57
+P 3050 750
+F 0 "#FLG0103" H 3050 825 50  0001 C CNN
+F 1 "PWR_FLAG" V 3050 877 50  0000 L CNN
+F 2 "" H 3050 750 50  0001 C CNN
+F 3 "~" H 3050 750 50  0001 C CNN
+       1    3050 750 
+       0    -1   -1   0   
+$EndComp
+$Comp
+L Device:Battery_Cell BT1
+U 1 1 62892D7C
+P 3250 750
+F 0 "BT1" V 3300 700 50  0000 C CNN
+F 1 "3V" V 3200 700 50  0000 C CNN
+F 2 "Battery:BatteryHolder_Keystone_1060_1x2032" V 3250 810 50  0001 C CNN
+F 3 "~" V 3250 810 50  0001 C CNN
+       1    3250 750 
+       0    -1   -1   0   
+$EndComp
+Wire Wire Line
+       3550 600  2050 600 
+Wire Wire Line
+       3050 750  3050 1000
+Wire Wire Line
+       3550 1200 3550 600 
+Wire Wire Line
+       2550 1300 2150 1300
+Wire Wire Line
+       2550 1650 2550 1600
+Wire Wire Line
+       2550 1450 2550 1500
+$Comp
+L power:VCC #PWR0137
+U 1 1 62891898
+P 2950 1000
+F 0 "#PWR0137" H 2950 850 50  0001 C CNN
+F 1 "VCC" H 2950 1150 50  0000 C CNN
+F 2 "" H 2950 1000 50  0001 C CNN
+F 3 "" H 2950 1000 50  0001 C CNN
+       1    2950 1000
+       1    0    0    -1  
+$EndComp
+$Comp
+L Timer_RTC:DS1302Z+ U32
+U 1 1 623FA4BC
+P 3050 1400
+F 0 "U32" H 3150 1050 50  0000 L CNN
+F 1 "DS1302Z+" H 2850 1400 50  0000 L CNN
+F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 3050 900 50  0001 C CNN
+F 3 "https://datasheets.maximintegrated.com/en/ds/DS1302.pdf" H 3050 1400 50  0001 C CNN
+       1    3050 1400
+       1    0    0    -1  
+$EndComp
+$Comp
+L Device:Crystal_Small Y3
+U 1 1 63520613
+P 2450 1550
+F 0 "Y3" V 2450 1650 50  0000 L CNN
+F 1 "32.768KHz" V 2650 1400 50  0001 L CNN
+F 2 "Crystal:Crystal_C38-LF_D3.0mm_L8.0mm_Horizontal" H 2450 1550 50  0001 C CNN
+F 3 "~" H 2450 1550 50  0001 C CNN
+F 4 "6pF" H 2450 1550 50  0001 C CNN "load"
+       1    2450 1550
+       0    -1   -1   0   
+$EndComp
+Connection ~ 2450 1450
+Connection ~ 2450 1650
+Wire Wire Line
+       2100 1350 2100 1200
+Wire Wire Line
+       2100 1200 2550 1200
+Connection ~ 2100 1350
+Wire Wire Line
+       3350 750  3400 750 
+Wire Wire Line
+       3400 750  3400 850 
+$Comp
+L Device:C_Small C4
+U 1 1 5FF08D11
+P 3250 10850
+F 0 "C4" H 3200 11000 50  0000 L CNN
+F 1 "0.1uF" H 3150 10700 50  0000 L CNN
+F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 3250 10850 50  0001 C CNN
+F 3 "~" H 3250 10850 50  0001 C CNN
+       1    3250 10850
+       1    0    0    -1  
+$EndComp
+Connection ~ 3250 10750
+Wire Wire Line
+       3250 10750 3400 10750
+Connection ~ 3250 10950
+Wire Wire Line
+       3250 10950 3400 10950
+$Comp
+L Device:CP1 C35
+U 1 1 5FF65C5D
+P 1850 9900
+F 0 "C35" H 2000 9900 50  0000 L CNN
+F 1 "0.33uF" H 1900 9800 50  0000 L CNN
+F 2 "Capacitor_SMD:CP_Elec_4x5.4" H 1850 9900 50  0001 C CNN
+F 3 "~" H 1850 9900 50  0001 C CNN
+       1    1850 9900
+       1    0    0    -1  
+$EndComp
+Connection ~ 1850 9750

 $EndSCHEMATC
 $EndSCHEMATC