key800/keyboard.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 3
Title "KEY800"
Date "2021-11-27"
Rev "1.03"
Comp "www.SweProj.com"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text Label 10350 4850 0    50   ~ 0
USB_D-
Wire Wire Line
	9650 5250 9650 5350
$Comp
L power:+3V3 #PWR09
U 1 1 6110E24F
P 9650 2850
F 0 "#PWR09" H 9650 2700 50  0001 C CNN
F 1 "+3V3" H 9665 3023 50  0000 C CNN
F 2 "" H 9650 2850 50  0001 C CNN
F 3 "" H 9650 2850 50  0001 C CNN
	1    9650 2850
	1    0    0    -1  
$EndComp
Wire Wire Line
	9650 2850 9650 2950
Text GLabel 9000 3250 0    39   Input ~ 0
ESP32_IO0
Text GLabel 9000 3150 0    39   Input ~ 0
ESP32_EN
Text GLabel 10300 3350 2    50   Input ~ 0
ESP32_RXD
Text GLabel 10300 3450 2    50   Input ~ 0
ESP32_TXD
$Comp
L Device:LED D3
U 1 1 611B5A79
P 8800 5400
F 0 "D3" V 8800 5250 50  0000 L CNN
F 1 "LED-Y" V 8900 5100 50  0000 L CNN
F 2 "LED_SMD:LED_0603_1608Metric" H 8800 5400 50  0001 C CNN
F 3 "~" H 8800 5400 50  0001 C CNN
F 4 "C72038" H 8800 5400 50  0001 C CNN "LCSC"
	1    8800 5400
	0    1    -1   0   
$EndComp
$Comp
L Device:R_Small R15
U 1 1 611B7173
P 8800 5700
F 0 "R15" V 8700 5650 50  0000 L CNN
F 1 "1k" H 8650 5600 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 8800 5700 50  0001 C CNN
F 3 "~" H 8800 5700 50  0001 C CNN
F 4 "C11702" H 8800 5700 50  0001 C CNN "LCSC"
	1    8800 5700
	1    0    0    -1  
$EndComp
Wire Wire Line
	8800 5550 8800 5600
$Comp
L power:GND #PWR031
U 1 1 611BD13B
P 8800 5850
F 0 "#PWR031" H 8800 5600 50  0001 C CNN
F 1 "GND" H 8805 5677 50  0000 C CNN
F 2 "" H 8800 5850 50  0001 C CNN
F 3 "" H 8800 5850 50  0001 C CNN
	1    8800 5850
	1    0    0    -1  
$EndComp
Wire Wire Line
	8800 5800 8800 5850
Wire Wire Line
	8800 5250 8800 5050
NoConn ~ 10250 3150
Text Label 10350 4750 0    50   ~ 0
USB_D+
Wire Wire Line
	9000 3150 9050 3150
Wire Wire Line
	9000 3250 9050 3250
Wire Wire Line
	10250 3450 10300 3450
Wire Wire Line
	10250 3350 10300 3350
Text GLabel 10150 1500 2    50   Input ~ 0
ESP32_EN
Text GLabel 10150 1200 2    50   Input ~ 0
ESP32_TXD
$Comp
L RF_Module:ESP32-S2-WROVER-I U5
U 1 1 610EDBDA
P 9650 4150
F 0 "U5" H 9250 5350 50  0000 C CNN
F 1 "ESP32-S2-WROVER-I" H 10100 5350 50  0000 C CNN
F 2 "key800:ESP32-S2-WROVER" H 10400 3000 50  0001 C CNN
F 3 "https://www.espressif.com/sites/default/files/documentation/esp32-s2-wroom_esp32-s2-wroom-i_datasheet_en.pdf" H 9350 3350 50  0001 C CNN
F 4 "C967028" H 9650 4150 50  0001 C CNN "LCSC"
	1    9650 4150
	1    0    0    -1  
$EndComp
NoConn ~ 10250 3250
$Comp
L power:+3V3 #PWR0143
U 1 1 611276FF
P 8350 2500
F 0 "#PWR0143" H 8350 2350 50  0001 C CNN
F 1 "+3V3" H 8365 2673 50  0000 C CNN
F 2 "" H 8350 2500 50  0001 C CNN
F 3 "" H 8350 2500 50  0001 C CNN
	1    8350 2500
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C54
U 1 1 611262EE
P 8350 2700
F 0 "C54" H 8100 2750 50  0000 L CNN
F 1 "22uF" H 8050 2650 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 8350 2700 50  0001 C CNN
F 3 "~" H 8350 2700 50  0001 C CNN
F 4 "C45783" H 8350 2700 50  0001 C CNN "LCSC"
	1    8350 2700
	1    0    0    -1  
$EndComp
Connection ~ 8350 2550
Wire Wire Line
	8350 2550 8350 2600
Wire Wire Line
	8350 2500 8350 2550
Connection ~ 8350 2850
Wire Wire Line
	8350 2850 8350 2900
Wire Wire Line
	8350 2800 8350 2850
Wire Wire Line
	8550 2550 8550 2600
Wire Wire Line
	8350 2550 8550 2550
Wire Wire Line
	8350 2850 8550 2850
Wire Wire Line
	8550 2850 8550 2800
$Comp
L Device:C_Small C55
U 1 1 61126FC2
P 8550 2700
F 0 "C55" H 8642 2746 50  0000 L CNN
F 1 "100nF" H 8642 2655 50  0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 8550 2700 50  0001 C CNN
F 3 "~" H 8550 2700 50  0001 C CNN
F 4 "C1525" H 8550 2700 50  0001 C CNN "LCSC"
	1    8550 2700
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0117
U 1 1 615163D3
P 8350 2900
F 0 "#PWR0117" H 8350 2650 50  0001 C CNN
F 1 "GND" H 8355 2727 50  0000 C CNN
F 2 "" H 8350 2900 50  0001 C CNN
F 3 "" H 8350 2900 50  0001 C CNN
	1    8350 2900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0118
U 1 1 615180EF
P 9650 5350
F 0 "#PWR0118" H 9650 5100 50  0001 C CNN
F 1 "GND" H 9655 5177 50  0000 C CNN
F 2 "" H 9650 5350 50  0001 C CNN
F 3 "" H 9650 5350 50  0001 C CNN
	1    9650 5350
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x06_Male J3
U 1 1 61851738
P 9700 1300
F 0 "J3" H 9808 1681 50  0000 C CNN
F 1 "Conn_01x06_Male" H 9808 1590 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical" H 9700 1300 50  0001 C CNN
F 3 "~" H 9700 1300 50  0001 C CNN
	1    9700 1300
	1    0    0    -1  
$EndComp
Wire Wire Line
	9900 1200 10150 1200
Wire Wire Line
	9900 1300 10150 1300
Wire Wire Line
	9900 1400 10150 1400
Wire Wire Line
	9900 1500 10150 1500
$Comp
L power:+3V3 #PWR0131
U 1 1 61962989
P 10350 900
F 0 "#PWR0131" H 10350 750 50  0001 C CNN
F 1 "+3V3" H 10365 1073 50  0000 C CNN
F 2 "" H 10350 900 50  0001 C CNN
F 3 "" H 10350 900 50  0001 C CNN
	1    10350 900 
	1    0    0    -1  
$EndComp
Wire Wire Line
	9900 1100 10350 1100
Wire Wire Line
	10350 1100 10350 900 
Wire Wire Line
	9900 1600 10300 1600
Wire Wire Line
	10300 1600 10300 1850
$Comp
L power:GND #PWR0132
U 1 1 61980559
P 10300 1850
F 0 "#PWR0132" H 10300 1600 50  0001 C CNN
F 1 "GND" H 10305 1677 50  0000 C CNN
F 2 "" H 10300 1850 50  0001 C CNN
F 3 "" H 10300 1850 50  0001 C CNN
	1    10300 1850
	1    0    0    -1  
$EndComp
Text GLabel 10150 1400 2    50   Input ~ 0
ESP32_IO0
Text GLabel 10150 1300 2    50   Input ~ 0
ESP32_RXD
Text Notes 2350 5500 0    60   ~ 0
1. TxD\n2. GND\n3. RxD\n4. TRxC\n5. Key down\n6. 12V\n7. Reset
Wire Wire Line
	2850 3850 2850 3950
$Comp
L power:GND #PWR010
U 1 1 614F8C40
P 2500 4450
F 0 "#PWR010" H 2500 4200 50  0001 C CNN
F 1 "GND" H 2505 4277 50  0000 C CNN
F 2 "" H 2500 4450 50  0001 C CNN
F 3 "" H 2500 4450 50  0001 C CNN
	1    2500 4450
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR012
U 1 1 614B32C8
P 2850 3850
F 0 "#PWR012" H 2850 3700 50  0001 C CNN
F 1 "+12V" H 2865 4023 50  0000 C CNN
F 2 "" H 2850 3850 50  0001 C CNN
F 3 "" H 2850 3850 50  0001 C CNN
	1    2850 3850
	1    0    0    -1  
$EndComp
$Comp
L Connector:DIN-7 J1
U 1 1 61457221
P 2500 4050
F 0 "J1" H 2500 3683 50  0000 C CNN
F 1 "DIN-7" H 2500 3774 50  0000 C CNN
F 2 "key800:din-7" H 2500 4050 50  0001 C CNN
F 3 "http://www.mouser.com/ds/2/18/40_c091_abd_e-75918.pdf" H 2500 4050 50  0001 C CNN
	1    2500 4050
	-1   0    0    1   
$EndComp
Wire Wire Line
	2500 2700 2850 2700
Text Label 2850 2700 2    50   ~ 0
USB_D-
Wire Wire Line
	2500 2700 2500 2600
Wire Wire Line
	2300 2700 2300 2600
Wire Wire Line
	1800 2700 2300 2700
Wire Wire Line
	8600 950  8600 1050
Wire Wire Line
	8150 950  8150 1050
Wire Wire Line
	7800 1300 7850 1300
Wire Wire Line
	8150 1250 8150 1300
Connection ~ 8150 1300
$Comp
L Device:R_Small R17
U 1 1 60379925
P 8150 1150
F 0 "R17" H 8209 1196 50  0000 L CNN
F 1 "10k" H 8209 1105 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 8150 1150 50  0001 C CNN
F 3 "~" H 8150 1150 50  0001 C CNN
F 4 "C25744" H 8150 1150 50  0001 C CNN "LCSC"
	1    8150 1150
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R16
U 1 1 611331F0
P 7950 1300
F 0 "R16" H 8009 1346 50  0000 L CNN
F 1 "1k" H 8009 1255 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 7950 1300 50  0001 C CNN
F 3 "~" H 7950 1300 50  0001 C CNN
F 4 "C11702" H 7950 1300 50  0001 C CNN "LCSC"
	1    7950 1300
	0    1    1    0   
$EndComp
Text GLabel 7800 1300 0    50   Input ~ 0
ESP32_EN
$Comp
L power:+3V3 #PWR0175
U 1 1 6035B9AD
P 8150 950
F 0 "#PWR0175" H 8150 800 50  0001 C CNN
F 1 "+3V3" H 8165 1123 50  0000 C CNN
F 2 "" H 8150 950 50  0001 C CNN
F 3 "" H 8150 950 50  0001 C CNN
	1    8150 950 
	1    0    0    -1  
$EndComp
Wire Wire Line
	8050 1300 8150 1300
$Comp
L power:+3V3 #PWR0150
U 1 1 613A45C4
P 8600 950
F 0 "#PWR0150" H 8600 800 50  0001 C CNN
F 1 "+3V3" H 8615 1123 50  0000 C CNN
F 2 "" H 8600 950 50  0001 C CNN
F 3 "" H 8600 950 50  0001 C CNN
	1    8600 950 
	1    0    0    -1  
$EndComp
Wire Wire Line
	8600 1250 8600 1300
$Comp
L Device:R_Small R18
U 1 1 613A0F9D
P 8600 1150
F 0 "R18" H 8659 1196 50  0000 L CNN
F 1 "10k" H 8659 1105 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 8600 1150 50  0001 C CNN
F 3 "~" H 8600 1150 50  0001 C CNN
F 4 "C25744" H 8600 1150 50  0001 C CNN "LCSC"
	1    8600 1150
	1    0    0    -1  
$EndComp
Text GLabel 8600 1300 3    50   Input ~ 0
ESP32_IO0
Wire Wire Line
	8150 1550 8150 1600
$Comp
L power:GND #PWR0145
U 1 1 611302A2
P 8150 1600
F 0 "#PWR0145" H 8150 1350 50  0001 C CNN
F 1 "GND" H 8155 1427 50  0000 C CNN
F 2 "" H 8150 1600 50  0001 C CNN
F 3 "" H 8150 1600 50  0001 C CNN
	1    8150 1600
	1    0    0    -1  
$EndComp
Wire Wire Line
	8150 1300 8150 1350
$Comp
L Device:C_Small C8
U 1 1 6112E6F3
P 8150 1450
F 0 "C8" H 8242 1496 50  0000 L CNN
F 1 "100nF" H 8242 1405 50  0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 8150 1450 50  0001 C CNN
F 3 "~" H 8150 1450 50  0001 C CNN
F 4 "C1525" H 8150 1450 50  0001 C CNN "LCSC"
	1    8150 1450
	1    0    0    -1  
$EndComp
Connection ~ 850  2100
Wire Wire Line
	750  2100 850  2100
Wire Wire Line
	750  2000 750  2100
Wire Wire Line
	1600 2100 1600 2400
Wire Wire Line
	850  2100 1600 2100
Wire Wire Line
	850  2000 850  2100
Wire Wire Line
	1550 1400 1550 1200
Wire Wire Line
	1150 1400 1550 1400
Wire Wire Line
	3550 800  3550 1200
Wire Wire Line
	1850 1200 2950 1200
Wire Wire Line
	2500 1650 2850 1650
Wire Wire Line
	2500 1800 2500 1650
Wire Wire Line
	3250 1200 3550 1200
Wire Wire Line
	3550 1550 3550 1600
Connection ~ 3550 1200
Wire Wire Line
	3550 1200 3550 1350
$Comp
L power:+5V #PWR0161
U 1 1 6032DF88
P 3550 800
F 0 "#PWR0161" H 3550 650 50  0001 C CNN
F 1 "+5V" H 3565 973 50  0000 C CNN
F 2 "" H 3550 800 50  0001 C CNN
F 3 "" H 3550 800 50  0001 C CNN
	1    3550 800 
	1    0    0    -1  
$EndComp
Text Label 2850 1650 2    50   ~ 0
USB_D+
Connection ~ 1850 1200
Wire Wire Line
	1850 2200 2000 2200
Wire Wire Line
	1850 1200 1850 2200
Wire Wire Line
	1550 1200 1850 1200
Wire Wire Line
	2300 1600 2300 1800
Wire Wire Line
	1800 1700 1800 2700
Wire Wire Line
	1150 1700 1800 1700
Wire Wire Line
	2900 2200 2900 2300
$Comp
L power:GND #PWR0141
U 1 1 610EE85F
P 2900 2300
F 0 "#PWR0141" H 2900 2050 50  0001 C CNN
F 1 "GND" H 2905 2127 50  0000 C CNN
F 2 "" H 2900 2300 50  0001 C CNN
F 3 "" H 2900 2300 50  0001 C CNN
	1    2900 2300
	1    0    0    -1  
$EndComp
Wire Wire Line
	1150 1600 2300 1600
$Comp
L Power_Protection:USBLC6-2SC6 U8
U 1 1 610EE85E
P 2400 2200
AR Path="/610EE85E" Ref="U8"  Part="1" 
AR Path="/5E63B67F/610EE85E" Ref="U8"  Part="1" 
AR Path="/601569F0/610EE85E" Ref="U9"  Part="1" 
AR Path="/602159BB/610EE85E" Ref="U15"  Part="1" 
AR Path="/613A2C81/610EE85E" Ref="U2"  Part="1" 
F 0 "U2" V 2750 2550 50  0000 R CNN
F 1 "USBLC6-2SC6" V 2750 2000 50  0000 R CNN
F 2 "Package_TO_SOT_SMD:SOT-23-6" H 1650 2600 50  0001 C CNN
F 3 "" H 2600 2550 50  0001 C CNN
F 4 "C7519" H 2400 2200 50  0001 C CNN "LCSC"
	1    2400 2200
	0    -1   -1   0   
$EndComp
$Comp
L power:GND #PWR0140
U 1 1 610EE85C
P 3550 1600
F 0 "#PWR0140" H 3550 1350 50  0001 C CNN
F 1 "GND" H 3555 1427 50  0000 C CNN
F 2 "" H 3550 1600 50  0001 C CNN
F 3 "" H 3550 1600 50  0001 C CNN
	1    3550 1600
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C5
U 1 1 5E7FEAC9
P 3550 1450
F 0 "C5" H 3450 1550 50  0000 C CNN
F 1 "1uF" H 3450 1350 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 3588 1300 50  0001 C CNN
F 3 "~" H 3550 1450 50  0001 C CNN
F 4 "C28323" H 2150 500 50  0001 C CNN "LCSC"
F 5 "" H 2150 500 50  0001 C CNN "MOUSER"
F 6 "" H 2150 500 50  0001 C CNN "MPN"
F 7 "" H 3550 1450 50  0001 C CNN "Supplier"
	1    3550 1450
	-1   0    0    -1  
$EndComp
$Comp
L Connector:USB_A USB1
U 1 1 610EE858
P 850 1600
F 0 "USB1" H 850 2450 60  0000 C CNN
F 1 "CONNFLY_DS1095" H 1000 2300 60  0000 C CNN
F 2 "key800:USB_A_CONNFLY_DS1095-WNR0" H 1450 2150 60  0000 C CNN
F 3 "" H 150 1650 60  0001 C CNN
F 4 "" H 850 1600 50  0001 C CNN "LCSC"
	1    850  1600
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0136
U 1 1 5CC7520B
P 1600 2400
F 0 "#PWR0136" H 1600 2150 50  0001 C CNN
F 1 "GND" H 1605 2227 50  0000 C CNN
F 2 "" H 1600 2400 50  0001 C CNN
F 3 "" H 1600 2400 50  0001 C CNN
	1    1600 2400
	1    0    0    -1  
$EndComp
$Comp
L Device:Polyfuse F1
U 1 1 610EE853
P 3100 1200
F 0 "F1" V 3000 1200 50  0000 C CNN
F 1 "Polyfuse 0.5A" V 3200 1300 50  0000 C CNN
F 2 "key800:Fuse_1206_3216Metric" H 3150 1000 50  0001 L CNN
F 3 "" H 3100 1200 50  0001 C CNN
F 4 "C69680" H 1750 -300 50  0001 C CNN "LCSC"
F 5 "" H 1750 -300 50  0001 C CNN "MOUSER"
F 6 "" H 1750 -300 50  0001 C CNN "MPN"
	1    3100 1200
	0    1    1    0   
$EndComp
Wire Wire Line
	2500 4350 2500 4450
Wire Wire Line
	2800 3950 2850 3950
Wire Wire Line
	8800 5050 9050 5050
$Comp
L Transistor_FET:BSS138 Q2
U 1 1 61620052
P 1400 4600
F 0 "Q2" V 1649 4600 50  0000 C CNN
F 1 "BSS138" V 1740 4600 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 1600 4525 50  0001 L CIN
F 3 "https://www.onsemi.com/pub/Collateral/BSS138-D.PDF" H 1400 4600 50  0001 L CNN
	1    1400 4600
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R8
U 1 1 6162004C
P 1150 4550
F 0 "R8" H 1200 4650 50  0000 L CNN
F 1 "10k" H 1200 4550 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 1150 4550 50  0001 C CNN
F 3 "~" H 1150 4550 50  0001 C CNN
F 4 "C25744" H 1150 4550 50  0001 C CNN "LCSC"
	1    1150 4550
	-1   0    0    -1  
$EndComp
$Comp
L Device:R_Small R12
U 1 1 61620045
P 1650 4550
F 0 "R12" H 1450 4600 50  0000 L CNN
F 1 "10k" H 1450 4500 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 1650 4550 50  0001 C CNN
F 3 "~" H 1650 4550 50  0001 C CNN
F 4 "C25744" H 1650 4550 50  0001 C CNN "LCSC"
	1    1650 4550
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1400 4400 1400 4350
Wire Wire Line
	1400 4350 1150 4350
Connection ~ 1150 4350
Wire Wire Line
	1150 4350 1150 4450
Wire Wire Line
	1150 4300 1150 4350
$Comp
L power:+3V3 #PWR02
U 1 1 61620039
P 1150 4300
F 0 "#PWR02" H 1150 4150 50  0001 C CNN
F 1 "+3V3" H 1165 4473 50  0000 C CNN
F 2 "" H 1150 4300 50  0001 C CNN
F 3 "" H 1150 4300 50  0001 C CNN
	1    1150 4300
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1200 4700 1150 4700
Wire Wire Line
	1150 4700 1150 4650
Wire Wire Line
	1650 4650 1650 4700
Wire Wire Line
	1650 4700 1600 4700
$Comp
L power:+5V #PWR06
U 1 1 6162002F
P 1650 4300
F 0 "#PWR06" H 1650 4150 50  0001 C CNN
F 1 "+5V" H 1665 4473 50  0000 C CNN
F 2 "" H 1650 4300 50  0001 C CNN
F 3 "" H 1650 4300 50  0001 C CNN
	1    1650 4300
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1650 4300 1650 4450
$Comp
L Transistor_FET:BSS138 Q1
U 1 1 6146317D
P 1400 3700
F 0 "Q1" V 1649 3700 50  0000 C CNN
F 1 "BSS138" V 1740 3700 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 1600 3625 50  0001 L CIN
F 3 "https://www.onsemi.com/pub/Collateral/BSS138-D.PDF" H 1400 3700 50  0001 L CNN
	1    1400 3700
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R6
U 1 1 6146CD62
P 1150 3650
F 0 "R6" H 1200 3750 50  0000 L CNN
F 1 "10k" H 1200 3650 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 1150 3650 50  0001 C CNN
F 3 "~" H 1150 3650 50  0001 C CNN
F 4 "C25744" H 1150 3650 50  0001 C CNN "LCSC"
	1    1150 3650
	-1   0    0    -1  
$EndComp
$Comp
L Device:R_Small R11
U 1 1 61473753
P 1650 3650
F 0 "R11" H 1450 3700 50  0000 L CNN
F 1 "10k" H 1450 3600 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 1650 3650 50  0001 C CNN
F 3 "~" H 1650 3650 50  0001 C CNN
F 4 "C25744" H 1650 3650 50  0001 C CNN "LCSC"
	1    1650 3650
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1400 3500 1400 3450
Wire Wire Line
	1400 3450 1150 3450
Connection ~ 1150 3450
Wire Wire Line
	1150 3450 1150 3550
Wire Wire Line
	1150 3400 1150 3450
$Comp
L power:+3V3 #PWR01
U 1 1 61486CE8
P 1150 3400
F 0 "#PWR01" H 1150 3250 50  0001 C CNN
F 1 "+3V3" H 1165 3573 50  0000 C CNN
F 2 "" H 1150 3400 50  0001 C CNN
F 3 "" H 1150 3400 50  0001 C CNN
	1    1150 3400
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1200 3800 1150 3800
Wire Wire Line
	1150 3800 1150 3750
Wire Wire Line
	1650 3750 1650 3800
Wire Wire Line
	1650 3800 1600 3800
$Comp
L power:+5V #PWR05
U 1 1 614AC6E7
P 1650 3400
F 0 "#PWR05" H 1650 3250 50  0001 C CNN
F 1 "+5V" H 1665 3573 50  0000 C CNN
F 2 "" H 1650 3400 50  0001 C CNN
F 3 "" H 1650 3400 50  0001 C CNN
	1    1650 3400
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1650 3400 1650 3550
Wire Wire Line
	1650 3800 1950 3800
Wire Wire Line
	1950 3800 1950 3950
Wire Wire Line
	1950 3950 2200 3950
Connection ~ 1650 3800
Wire Wire Line
	1650 4700 1950 4700
Wire Wire Line
	1950 4700 1950 4150
Wire Wire Line
	1950 4150 2200 4150
Connection ~ 1650 4700
Text Label 1100 3800 2    60   ~ 0
RESET_IN
Wire Wire Line
	1100 3800 1150 3800
Connection ~ 1150 3800
Text Label 1050 4700 2    60   ~ 0
KD_IN
Wire Wire Line
	1050 4700 1150 4700
Connection ~ 1150 4700
Wire Wire Line
	2850 6100 2850 6200
$Comp
L power:GND #PWR011
U 1 1 6174E6B2
P 2500 6700
F 0 "#PWR011" H 2500 6450 50  0001 C CNN
F 1 "GND" H 2505 6527 50  0000 C CNN
F 2 "" H 2500 6700 50  0001 C CNN
F 3 "" H 2500 6700 50  0001 C CNN
	1    2500 6700
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR013
U 1 1 6174E6BC
P 2850 6100
F 0 "#PWR013" H 2850 5950 50  0001 C CNN
F 1 "+12V" H 2865 6273 50  0000 C CNN
F 2 "" H 2850 6100 50  0001 C CNN
F 3 "" H 2850 6100 50  0001 C CNN
	1    2850 6100
	1    0    0    -1  
$EndComp
$Comp
L Connector:DIN-7 J2
U 1 1 6174E6C6
P 2500 6300
F 0 "J2" H 2500 5933 50  0000 C CNN
F 1 "DIN-7" H 2500 6024 50  0000 C CNN
F 2 "key800:din-7" H 2500 6300 50  0001 C CNN
F 3 "http://www.mouser.com/ds/2/18/40_c091_abd_e-75918.pdf" H 2500 6300 50  0001 C CNN
	1    2500 6300
	-1   0    0    1   
$EndComp
Wire Wire Line
	2500 6600 2500 6700
Wire Wire Line
	2800 6200 2850 6200
$Comp
L Transistor_FET:BSS138 Q4
U 1 1 6174E6D2
P 1400 6850
F 0 "Q4" V 1649 6850 50  0000 C CNN
F 1 "BSS138" V 1740 6850 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 1600 6775 50  0001 L CIN
F 3 "https://www.onsemi.com/pub/Collateral/BSS138-D.PDF" H 1400 6850 50  0001 L CNN
	1    1400 6850
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R10
U 1 1 6174E6DD
P 1150 6800
F 0 "R10" H 1200 6900 50  0000 L CNN
F 1 "10k" H 1200 6800 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 1150 6800 50  0001 C CNN
F 3 "~" H 1150 6800 50  0001 C CNN
F 4 "C25744" H 1150 6800 50  0001 C CNN "LCSC"
	1    1150 6800
	-1   0    0    -1  
$EndComp
$Comp
L Device:R_Small R14
U 1 1 6174E6E8
P 1650 6800
F 0 "R14" H 1450 6850 50  0000 L CNN
F 1 "10k" H 1450 6750 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 1650 6800 50  0001 C CNN
F 3 "~" H 1650 6800 50  0001 C CNN
F 4 "C25744" H 1650 6800 50  0001 C CNN "LCSC"
	1    1650 6800
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1400 6650 1400 6600
Wire Wire Line
	1400 6600 1150 6600
Connection ~ 1150 6600
Wire Wire Line
	1150 6600 1150 6700
Wire Wire Line
	1150 6550 1150 6600
$Comp
L power:+3V3 #PWR04
U 1 1 6174E6F7
P 1150 6550
F 0 "#PWR04" H 1150 6400 50  0001 C CNN
F 1 "+3V3" H 1165 6723 50  0000 C CNN
F 2 "" H 1150 6550 50  0001 C CNN
F 3 "" H 1150 6550 50  0001 C CNN
	1    1150 6550
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1200 6950 1150 6950
Wire Wire Line
	1150 6950 1150 6900
Wire Wire Line
	1650 6900 1650 6950
Wire Wire Line
	1650 6950 1600 6950
$Comp
L power:+5V #PWR08
U 1 1 6174E705
P 1650 6550
F 0 "#PWR08" H 1650 6400 50  0001 C CNN
F 1 "+5V" H 1665 6723 50  0000 C CNN
F 2 "" H 1650 6550 50  0001 C CNN
F 3 "" H 1650 6550 50  0001 C CNN
	1    1650 6550
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1650 6550 1650 6700
$Comp
L Transistor_FET:BSS138 Q3
U 1 1 6174E710
P 1400 5950
F 0 "Q3" V 1649 5950 50  0000 C CNN
F 1 "BSS138" V 1740 5950 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 1600 5875 50  0001 L CIN
F 3 "https://www.onsemi.com/pub/Collateral/BSS138-D.PDF" H 1400 5950 50  0001 L CNN
	1    1400 5950
	0    1    1    0   
$EndComp
$Comp
L Device:R_Small R9
U 1 1 6174E71B
P 1150 5900
F 0 "R9" H 1200 6000 50  0000 L CNN
F 1 "10k" H 1200 5900 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 1150 5900 50  0001 C CNN
F 3 "~" H 1150 5900 50  0001 C CNN
F 4 "C25744" H 1150 5900 50  0001 C CNN "LCSC"
	1    1150 5900
	-1   0    0    -1  
$EndComp
$Comp
L Device:R_Small R13
U 1 1 6174E726
P 1650 5900
F 0 "R13" H 1450 5950 50  0000 L CNN
F 1 "10k" H 1450 5850 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 1650 5900 50  0001 C CNN
F 3 "~" H 1650 5900 50  0001 C CNN
F 4 "C25744" H 1650 5900 50  0001 C CNN "LCSC"
	1    1650 5900
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1400 5750 1400 5700
Wire Wire Line
	1400 5700 1150 5700
Connection ~ 1150 5700
Wire Wire Line
	1150 5700 1150 5800
Wire Wire Line
	1150 5650 1150 5700
$Comp
L power:+3V3 #PWR03
U 1 1 6174E735
P 1150 5650
F 0 "#PWR03" H 1150 5500 50  0001 C CNN
F 1 "+3V3" H 1165 5823 50  0000 C CNN
F 2 "" H 1150 5650 50  0001 C CNN
F 3 "" H 1150 5650 50  0001 C CNN
	1    1150 5650
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1200 6050 1150 6050
Wire Wire Line
	1150 6050 1150 6000
Wire Wire Line
	1650 6000 1650 6050
Wire Wire Line
	1650 6050 1600 6050
$Comp
L power:+5V #PWR07
U 1 1 6174E743
P 1650 5650
F 0 "#PWR07" H 1650 5500 50  0001 C CNN
F 1 "+5V" H 1665 5823 50  0000 C CNN
F 2 "" H 1650 5650 50  0001 C CNN
F 3 "" H 1650 5650 50  0001 C CNN
	1    1650 5650
	-1   0    0    -1  
$EndComp
Wire Wire Line
	1650 5650 1650 5800
Wire Wire Line
	1650 6050 1950 6050
Wire Wire Line
	1950 6050 1950 6200
Wire Wire Line
	1950 6200 2200 6200
Connection ~ 1650 6050
Wire Wire Line
	1650 6950 1950 6950
Wire Wire Line
	1950 6950 1950 6400
Wire Wire Line
	1950 6400 2200 6400
Connection ~ 1650 6950
Text Label 1100 6050 2    60   ~ 0
RESET_OUT
Wire Wire Line
	1100 6050 1150 6050
Connection ~ 1150 6050
Text Label 1050 6950 2    60   ~ 0
KD_OUT
Wire Wire Line
	1050 6950 1150 6950
Connection ~ 1150 6950
Text Notes 2150 5850 0    60   ~ 0
To computer
Text Notes 2200 3600 0    60   ~ 0
To keyboard
Text Label 8950 3450 2    60   ~ 0
RESET_IN
Wire Wire Line
	8950 3450 9050 3450
Text Label 8950 3550 2    60   ~ 0
KD_IN
Wire Wire Line
	8950 3550 9050 3550
Text Label 10350 4350 0    60   ~ 0
RESET_OUT
Wire Wire Line
	8950 3950 9050 3950
Text Label 10350 4450 0    60   ~ 0
KD_OUT
Wire Wire Line
	8950 4050 9050 4050
Wire Wire Line
	2800 4050 2850 4050
Text Label 8950 3850 2    60   ~ 0
TxD_IN_3V3
Wire Wire Line
	8950 3650 9050 3650
Text Label 2150 4050 2    60   ~ 0
RxD_IN
Wire Wire Line
	2150 4050 2200 4050
Text Label 8950 4050 2    60   ~ 0
RxD_IN_3V3
Wire Wire Line
	8950 3750 9050 3750
Wire Wire Line
	2800 4150 2850 4150
Wire Wire Line
	2800 6300 2850 6300
Text Label 8950 4150 2    60   ~ 0
TRxC_IN_3V3
Wire Wire Line
	8950 3850 9050 3850
Text Label 8950 3950 2    60   ~ 0
TxD_OUT_3V3
Wire Wire Line
	8950 4150 9050 4150
Text Label 2150 6300 2    60   ~ 0
RxD_OUT
Wire Wire Line
	2150 6300 2200 6300
Text Label 8950 3750 2    60   ~ 0
RxD_OUT_3V3
Wire Wire Line
	2800 6400 2850 6400
Text Label 8950 3650 2    60   ~ 0
TRxC_OUT_3V3
Wire Wire Line
	10250 4750 10350 4750
Wire Wire Line
	10250 4850 10350 4850
Wire Wire Line
	2800 2200 2900 2200
$Comp
L Device:R_Small R52
U 1 1 61C82904
P 5000 7150
F 0 "R52" H 4800 7200 50  0000 L CNN
F 1 "10k" H 4800 7100 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5000 7150 50  0001 C CNN
F 3 "~" H 5000 7150 50  0001 C CNN
F 4 "C25744" H 5000 7150 50  0001 C CNN "LCSC"
	1    5000 7150
	-1   0    0    -1  
$EndComp
$Comp
L Device:R_Small R53
U 1 1 61C83627
P 5250 7150
F 0 "R53" H 5050 7200 50  0000 L CNN
F 1 "10k" H 5050 7100 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5250 7150 50  0001 C CNN
F 3 "~" H 5250 7150 50  0001 C CNN
F 4 "C25744" H 5250 7150 50  0001 C CNN "LCSC"
	1    5250 7150
	-1   0    0    -1  
$EndComp
$Comp
L Device:R_Small R54
U 1 1 61C84598
P 5500 7150
F 0 "R54" H 5300 7200 50  0000 L CNN
F 1 "10k" H 5300 7100 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5500 7150 50  0001 C CNN
F 3 "~" H 5500 7150 50  0001 C CNN
F 4 "C25744" H 5500 7150 50  0001 C CNN "LCSC"
	1    5500 7150
	-1   0    0    -1  
$EndComp
Text Label 5000 6950 1    60   ~ 0
TRxC_IN
Text Label 5250 6950 1    60   ~ 0
RxD_IN
Text Label 5500 6950 1    60   ~ 0
TxD_IN
Wire Wire Line
	5000 6950 5000 7050
Wire Wire Line
	5250 6950 5250 7050
Wire Wire Line
	5500 6950 5500 7050
Wire Wire Line
	5000 7250 5000 7350
Wire Wire Line
	5000 7350 5250 7350
Wire Wire Line
	5250 7350 5250 7250
Wire Wire Line
	5250 7350 5500 7350
Wire Wire Line
	5500 7350 5500 7250
Connection ~ 5250 7350
$Comp
L power:GND #PWR0120
U 1 1 61CB3C11
P 5250 7450
F 0 "#PWR0120" H 5250 7200 50  0001 C CNN
F 1 "GND" H 5255 7277 50  0000 C CNN
F 2 "" H 5250 7450 50  0001 C CNN
F 3 "" H 5250 7450 50  0001 C CNN
	1    5250 7450
	1    0    0    -1  
$EndComp
Wire Wire Line
	5250 7350 5250 7450
$Comp
L Device:R_Small R55
U 1 1 61CE89C5
P 5800 7150
F 0 "R55" H 5600 7200 50  0000 L CNN
F 1 "10k" H 5600 7100 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 5800 7150 50  0001 C CNN
F 3 "~" H 5800 7150 50  0001 C CNN
F 4 "C25744" H 5800 7150 50  0001 C CNN "LCSC"
	1    5800 7150
	-1   0    0    -1  
$EndComp
$Comp
L Device:R_Small R56
U 1 1 61CE91EE
P 6050 7150
F 0 "R56" H 5850 7200 50  0000 L CNN
F 1 "10k" H 5850 7100 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 6050 7150 50  0001 C CNN
F 3 "~" H 6050 7150 50  0001 C CNN
F 4 "C25744" H 6050 7150 50  0001 C CNN "LCSC"
	1    6050 7150
	-1   0    0    -1  
$EndComp
$Comp
L Device:R_Small R57
U 1 1 61CE91F9
P 6300 7150
F 0 "R57" H 6100 7200 50  0000 L CNN
F 1 "10k" H 6100 7100 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" H 6300 7150 50  0001 C CNN
F 3 "~" H 6300 7150 50  0001 C CNN
F 4 "C25744" H 6300 7150 50  0001 C CNN "LCSC"
	1    6300 7150
	-1   0    0    -1  
$EndComp
Text Label 5800 6950 1    60   ~ 0
TRxC_OUT
Text Label 6050 6950 1    60   ~ 0
RxD_OUT
Text Label 6300 6950 1    60   ~ 0
TxD_OUT
Wire Wire Line
	5800 6950 5800 7050
Wire Wire Line
	6050 6950 6050 7050
Wire Wire Line
	6300 6950 6300 7050
Wire Wire Line
	5800 7250 5800 7350
Wire Wire Line
	5800 7350 6050 7350
Wire Wire Line
	6050 7350 6050 7250
Wire Wire Line
	6050 7350 6300 7350
Wire Wire Line
	6300 7350 6300 7250
Connection ~ 6050 7350
$Comp
L power:GND #PWR0121
U 1 1 61CE920F
P 6050 7450
F 0 "#PWR0121" H 6050 7200 50  0001 C CNN
F 1 "GND" H 6055 7277 50  0000 C CNN
F 2 "" H 6050 7450 50  0001 C CNN
F 3 "" H 6050 7450 50  0001 C CNN
	1    6050 7450
	1    0    0    -1  
$EndComp
Wire Wire Line
	6050 7350 6050 7450
Wire Wire Line
	8950 4450 9050 4450
Wire Wire Line
	8950 4650 9050 4650
Wire Wire Line
	8950 4550 9050 4550
Text GLabel 8950 4650 0    60   Input ~ 0
BTN1
Text GLabel 8950 4550 0    60   Input ~ 0
BTN2
Text GLabel 8950 4450 0    60   Input ~ 0
BTN3
Wire Wire Line
	10250 4350 10350 4350
Wire Wire Line
	10250 4450 10350 4450
NoConn ~ 9050 4250
NoConn ~ 9050 4350
NoConn ~ 9050 4950
NoConn ~ 10250 4650
NoConn ~ 10250 4550
NoConn ~ 10250 4250
NoConn ~ 10250 4150
NoConn ~ 10250 4050
NoConn ~ 10250 3950
NoConn ~ 10250 3850
NoConn ~ 10250 3750
NoConn ~ 9050 3350
NoConn ~ 5150 2400
NoConn ~ 5150 2500
NoConn ~ 5150 2600
NoConn ~ 5150 2700
NoConn ~ 5150 2800
NoConn ~ 6150 2800
NoConn ~ 6150 2700
NoConn ~ 6150 2600
NoConn ~ 6150 2500
NoConn ~ 6150 2400
NoConn ~ 6150 4650
NoConn ~ 6150 4750
NoConn ~ 6150 4850
NoConn ~ 6150 4950
NoConn ~ 6150 5050
NoConn ~ 5150 5050
NoConn ~ 5150 4950
NoConn ~ 5150 4850
NoConn ~ 5150 4750
NoConn ~ 5150 4650
Wire Wire Line
	5050 4550 5150 4550
Wire Wire Line
	5050 4450 5150 4450
Wire Wire Line
	5000 5350 5150 5350
Wire Wire Line
	5150 3950 5150 4000
Wire Wire Line
	5150 3700 5150 3750
$Comp
L power:GND #PWR0108
U 1 1 625E27AD
P 5150 4000
F 0 "#PWR0108" H 5150 3750 50  0001 C CNN
F 1 "GND" H 5155 3827 50  0000 C CNN
F 2 "" H 5150 4000 50  0001 C CNN
F 3 "" H 5150 4000 50  0001 C CNN
	1    5150 4000
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR0106
U 1 1 625E27A3
P 5150 3700
F 0 "#PWR0106" H 5150 3550 50  0001 C CNN
F 1 "+3V3" H 5165 3873 50  0000 C CNN
F 2 "" H 5150 3700 50  0001 C CNN
F 3 "" H 5150 3700 50  0001 C CNN
	1    5150 3700
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C7
U 1 1 625E2799
P 5150 3850
F 0 "C7" H 5242 3896 50  0000 L CNN
F 1 "100nF" H 5242 3805 50  0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 5150 3850 50  0001 C CNN
F 3 "~" H 5150 3850 50  0001 C CNN
F 4 "C1525" H 5150 3850 50  0001 C CNN "LCSC"
	1    5150 3850
	1    0    0    -1  
$EndComp
Wire Wire Line
	5200 1600 5200 1650
Wire Wire Line
	5200 1350 5200 1400
$Comp
L power:GND #PWR0105
U 1 1 625C92BC
P 5200 1650
F 0 "#PWR0105" H 5200 1400 50  0001 C CNN
F 1 "GND" H 5205 1477 50  0000 C CNN
F 2 "" H 5200 1650 50  0001 C CNN
F 3 "" H 5200 1650 50  0001 C CNN
	1    5200 1650
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR0102
U 1 1 625C8267
P 5200 1350
F 0 "#PWR0102" H 5200 1200 50  0001 C CNN
F 1 "+3V3" H 5215 1523 50  0000 C CNN
F 2 "" H 5200 1350 50  0001 C CNN
F 3 "" H 5200 1350 50  0001 C CNN
	1    5200 1350
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C11
U 1 1 625C70C1
P 5200 1500
F 0 "C11" H 5292 1546 50  0000 L CNN
F 1 "100nF" H 5292 1455 50  0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 5200 1500 50  0001 C CNN
F 3 "~" H 5200 1500 50  0001 C CNN
F 4 "C1525" H 5200 1500 50  0001 C CNN "LCSC"
	1    5200 1500
	1    0    0    -1  
$EndComp
Wire Wire Line
	6150 2300 6250 2300
Text Label 6250 2300 0    60   ~ 0
TRxC_OUT
Wire Wire Line
	5050 2300 5150 2300
Text Label 5050 2300 2    60   ~ 0
TRxC_OUT_3V3
Text Label 2850 6400 0    60   ~ 0
TRxC_OUT
Wire Wire Line
	6150 2200 6250 2200
Text Label 6250 2200 0    60   ~ 0
RxD_OUT
Wire Wire Line
	6150 2100 6250 2100
Wire Wire Line
	5050 2100 5150 2100
Wire Wire Line
	5050 2200 5150 2200
Text Label 5050 2200 2    60   ~ 0
RxD_OUT_3V3
Wire Wire Line
	6150 4350 6250 4350
Text Label 6250 4350 0    60   ~ 0
TxD_OUT_3V3
Wire Wire Line
	5050 4350 5150 4350
Text Label 5050 4350 2    60   ~ 0
TxD_OUT
Text Label 2850 6300 0    60   ~ 0
TxD_OUT
Wire Wire Line
	6150 4550 6250 4550
Text Label 6250 4550 0    60   ~ 0
TRxC_IN_3V3
Text Label 5050 4550 2    60   ~ 0
TRxC_IN
Text Label 2850 4150 0    60   ~ 0
TRxC_IN
Wire Wire Line
	6150 4450 6250 4450
Text Label 6250 4450 0    60   ~ 0
RxD_IN_3V3
Text Label 5050 4450 2    60   ~ 0
RxD_IN
Text Label 5050 2100 2    60   ~ 0
TxD_IN_3V3
Text Label 6250 2100 0    60   ~ 0
TxD_IN
Text Label 2850 4050 0    60   ~ 0
TxD_IN
Wire Wire Line
	5650 1750 5650 1800
Wire Wire Line
	4900 3000 5150 3000
$Comp
L power:+3V3 #PWR014
U 1 1 6173BF41
P 4900 3000
F 0 "#PWR014" H 4900 2850 50  0001 C CNN
F 1 "+3V3" H 4915 3173 50  0000 C CNN
F 2 "" H 4900 3000 50  0001 C CNN
F 3 "" H 4900 3000 50  0001 C CNN
	1    4900 3000
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR018
U 1 1 6173BF37
P 5650 1750
F 0 "#PWR018" H 5650 1600 50  0001 C CNN
F 1 "+3V3" H 5665 1923 50  0000 C CNN
F 2 "" H 5650 1750 50  0001 C CNN
F 3 "" H 5650 1750 50  0001 C CNN
	1    5650 1750
	1    0    0    -1  
$EndComp
Wire Wire Line
	5650 3400 5650 3500
$Comp
L power:GND #PWR019
U 1 1 6173BF2C
P 5650 3500
F 0 "#PWR019" H 5650 3250 50  0001 C CNN
F 1 "GND" H 5655 3327 50  0000 C CNN
F 2 "" H 5650 3500 50  0001 C CNN
F 3 "" H 5650 3500 50  0001 C CNN
	1    5650 3500
	1    0    0    -1  
$EndComp
Wire Wire Line
	5000 3100 5150 3100
Wire Wire Line
	5000 3350 5000 3100
$Comp
L power:GND #PWR016
U 1 1 6173BF20
P 5000 3350
F 0 "#PWR016" H 5000 3100 50  0001 C CNN
F 1 "GND" H 5005 3177 50  0000 C CNN
F 2 "" H 5000 3350 50  0001 C CNN
F 3 "" H 5000 3350 50  0001 C CNN
	1    5000 3350
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC245 U3
U 1 1 6173B8BA
P 5650 2600
F 0 "U3" H 5400 3300 50  0000 C CNN
F 1 "74HCT245" H 5900 3300 50  0000 C CNN
F 2 "Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm" H 5650 2600 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC245" H 5650 2600 50  0001 C CNN
F 4 "C5980" H 5650 2600 50  0001 C CNN "LCSC"
	1    5650 2600
	1    0    0    -1  
$EndComp
Wire Wire Line
	5650 4000 5650 4050
Wire Wire Line
	4900 5250 5150 5250
$Comp
L power:+3V3 #PWR015
U 1 1 616E78A0
P 4900 5250
F 0 "#PWR015" H 4900 5100 50  0001 C CNN
F 1 "+3V3" H 4915 5423 50  0000 C CNN
F 2 "" H 4900 5250 50  0001 C CNN
F 3 "" H 4900 5250 50  0001 C CNN
	1    4900 5250
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR020
U 1 1 616D696C
P 5650 4000
F 0 "#PWR020" H 5650 3850 50  0001 C CNN
F 1 "+3V3" H 5665 4173 50  0000 C CNN
F 2 "" H 5650 4000 50  0001 C CNN
F 3 "" H 5650 4000 50  0001 C CNN
	1    5650 4000
	1    0    0    -1  
$EndComp
Wire Wire Line
	5650 5650 5650 5750
$Comp
L power:GND #PWR021
U 1 1 616CF3D1
P 5650 5750
F 0 "#PWR021" H 5650 5500 50  0001 C CNN
F 1 "GND" H 5655 5577 50  0000 C CNN
F 2 "" H 5650 5750 50  0001 C CNN
F 3 "" H 5650 5750 50  0001 C CNN
	1    5650 5750
	1    0    0    -1  
$EndComp
Wire Wire Line
	5000 5600 5000 5350
$Comp
L power:GND #PWR017
U 1 1 616C7867
P 5000 5600
F 0 "#PWR017" H 5000 5350 50  0001 C CNN
F 1 "GND" H 5005 5427 50  0000 C CNN
F 2 "" H 5000 5600 50  0001 C CNN
F 3 "" H 5000 5600 50  0001 C CNN
	1    5000 5600
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74HC245 U4
U 1 1 616B6A24
P 5650 4850
F 0 "U4" H 5400 5550 50  0000 C CNN
F 1 "74HCT245" H 5900 5550 50  0000 C CNN
F 2 "Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm" H 5650 4850 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC245" H 5650 4850 50  0001 C CNN
F 4 "C5980" H 5650 4850 50  0001 C CNN "LCSC"
	1    5650 4850
	1    0    0    -1  
$EndComp
Text GLabel 8950 4850 0    50   Input ~ 0
PI_TxD
Text GLabel 8950 4750 0    50   Input ~ 0
PI_RxD
NoConn ~ 10250 3550
NoConn ~ 10250 3650
Wire Wire Line
	8950 4750 9050 4750
Wire Wire Line
	8950 4850 9050 4850
$EndSCHEMATC