EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:switches
LIBS:relays
LIBS:motors
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:MiCS-6814-I2C-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Conn_01x05_Female J3
U 1 1 5A85F1CF
P 10850 950
F 0 "J3" H 10850 1250 50  0000 C CNN
F 1 "Conn_01x05" H 10850 650 50  0000 C CNN
F 2 "Socket_Strips:Socket_Strip_Straight_1x05_Pitch2.54mm" H 10850 950 50  0001 C CNN
F 3 "" H 10850 950 50  0001 C CNN
	1    10850 950 
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR01
U 1 1 5A85F841
P 10400 1150
F 0 "#PWR01" H 10400 900 50  0001 C CNN
F 1 "GND" H 10400 1000 50  0000 C CNN
F 2 "" H 10400 1150 50  0001 C CNN
F 3 "" H 10400 1150 50  0001 C CNN
	1    10400 1150
	1    0    0    -1  
$EndComp
Text GLabel 10500 750  0    47   Input ~ 0
CO
Text GLabel 10500 850  0    47   Input ~ 0
NH3
Text GLabel 10500 950  0    47   Input ~ 0
NO2
Text Notes 9900 1500 0    60   ~ 0
Connector MiCS-6814
$Comp
L Conn_01x05_Male J1
U 1 1 5A85FA96
P 750 1150
F 0 "J1" H 750 1450 50  0000 C CNN
F 1 "Conn_01x05" H 750 850 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x05_Pitch2.54mm" H 750 1150 50  0001 C CNN
F 3 "" H 750 1150 50  0001 C CNN
	1    750  1150
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR02
U 1 1 5A85FB97
P 1150 950
F 0 "#PWR02" H 1150 800 50  0001 C CNN
F 1 "+5V" H 1150 1090 50  0000 C CNN
F 2 "" H 1150 950 50  0001 C CNN
F 3 "" H 1150 950 50  0001 C CNN
	1    1150 950 
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR03
U 1 1 5A85FBAF
P 1350 1050
F 0 "#PWR03" H 1350 900 50  0001 C CNN
F 1 "VCC" H 1350 1200 50  0000 C CNN
F 2 "" H 1350 1050 50  0001 C CNN
F 3 "" H 1350 1050 50  0001 C CNN
	1    1350 1050
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR04
U 1 1 5A85FBC7
P 1150 1350
F 0 "#PWR04" H 1150 1100 50  0001 C CNN
F 1 "GND" H 1150 1200 50  0000 C CNN
F 2 "" H 1150 1350 50  0001 C CNN
F 3 "" H 1150 1350 50  0001 C CNN
	1    1150 1350
	1    0    0    -1  
$EndComp
Text GLabel 1150 1150 2    47   Input ~ 0
SDA_L
Text GLabel 1150 1250 2    47   Input ~ 0
SCL_L
Text Notes 1200 1900 2    47   ~ 0
External Connector
$Comp
L BSS138 Q1
U 1 1 5A8607AE
P 2750 1400
F 0 "Q1" V 2650 1300 50  0000 L CNN
F 1 "BSS138" V 3000 1250 50  0000 L CNN
F 2 "TO_SOT_Packages_SMD:SOT-23_Handsoldering" H 2950 1325 50  0001 L CIN
F 3 "" H 2750 1400 50  0001 L CNN
	1    2750 1400
	0    1    1    0   
$EndComp
$Comp
L BSS138 Q2
U 1 1 5A860837
P 3150 1600
F 0 "Q2" V 3000 1500 50  0000 L CNN
F 1 "BSS138" V 3400 1450 50  0000 L CNN
F 2 "TO_SOT_Packages_SMD:SOT-23_Handsoldering" H 3350 1525 50  0001 L CIN
F 3 "" H 3150 1600 50  0001 L CNN
	1    3150 1600
	0    1    1    0   
$EndComp
Text GLabel 1950 1700 0    47   Input ~ 0
SCL_L
Text GLabel 1950 1500 0    47   Input ~ 0
SDA_L
$Comp
L R R1
U 1 1 5A860C70
P 2150 1150
F 0 "R1" V 2230 1150 50  0000 C CNN
F 1 "10k" V 2150 1150 50  0000 C CNN
F 2 "Resistors_SMD:R_0805_HandSoldering" V 2080 1150 50  0001 C CNN
F 3 "" H 2150 1150 50  0001 C CNN
	1    2150 1150
	1    0    0    -1  
$EndComp
$Comp
L R R2
U 1 1 5A860CDF
P 2350 1250
F 0 "R2" V 2430 1250 50  0000 C CNN
F 1 "10k" V 2350 1250 50  0000 C CNN
F 2 "Resistors_SMD:R_0805_HandSoldering" V 2280 1250 50  0001 C CNN
F 3 "" H 2350 1250 50  0001 C CNN
	1    2350 1250
	1    0    0    -1  
$EndComp
$Comp
L R R6
U 1 1 5A860D16
P 3350 1150
F 0 "R6" V 3430 1150 50  0000 C CNN
F 1 "10k" V 3350 1150 50  0000 C CNN
F 2 "Resistors_SMD:R_0805_HandSoldering" V 3280 1150 50  0001 C CNN
F 3 "" H 3350 1150 50  0001 C CNN
	1    3350 1150
	1    0    0    -1  
$EndComp
$Comp
L R R7
U 1 1 5A860D61
P 3600 1250
F 0 "R7" V 3680 1250 50  0000 C CNN
F 1 "10k" V 3600 1250 50  0000 C CNN
F 2 "Resistors_SMD:R_0805_HandSoldering" V 3530 1250 50  0001 C CNN
F 3 "" H 3600 1250 50  0001 C CNN
	1    3600 1250
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR05
U 1 1 5A861C18
P 2150 800
F 0 "#PWR05" H 2150 650 50  0001 C CNN
F 1 "VCC" H 2150 950 50  0000 C CNN
F 2 "" H 2150 800 50  0001 C CNN
F 3 "" H 2150 800 50  0001 C CNN
	1    2150 800 
	1    0    0    -1  
$EndComp
Text GLabel 3800 1500 2    47   Input ~ 0
SDA_H
Text GLabel 3800 1700 2    47   Input ~ 0
SCL_H
$Comp
L +5V #PWR06
U 1 1 5A863776
P 3350 800
F 0 "#PWR06" H 3350 650 50  0001 C CNN
F 1 "+5V" H 3350 940 50  0000 C CNN
F 2 "" H 3350 800 50  0001 C CNN
F 3 "" H 3350 800 50  0001 C CNN
	1    3350 800 
	1    0    0    -1  
$EndComp
$Comp
L VCC #PWR07
U 1 1 5A8638F7
P 2350 900
F 0 "#PWR07" H 2350 750 50  0001 C CNN
F 1 "VCC" H 2350 1050 50  0000 C CNN
F 2 "" H 2350 900 50  0001 C CNN
F 3 "" H 2350 900 50  0001 C CNN
	1    2350 900 
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR08
U 1 1 5A8639D5
P 3600 900
F 0 "#PWR08" H 3600 750 50  0001 C CNN
F 1 "+5V" H 3600 1040 50  0000 C CNN
F 2 "" H 3600 900 50  0001 C CNN
F 3 "" H 3600 900 50  0001 C CNN
	1    3600 900 
	1    0    0    -1  
$EndComp
Text Notes 2250 1900 2    47   ~ 0
I2C LevelShifter
$Comp
L Conn_02x03_Odd_Even J2
U 1 1 5A865637
P 1350 2450
F 0 "J2" H 1400 2650 50  0000 C CNN
F 1 "ICSP1" H 1400 2250 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm" H 1350 2450 50  0001 C CNN
F 3 "" H 1350 2450 50  0001 C CNN
	1    1350 2450
	1    0    0    -1  
$EndComp
Text GLabel 950  2350 0    47   Input ~ 0
MISO
Text GLabel 950  2450 0    47   Input ~ 0
SCK
Text GLabel 950  2550 0    47   Input ~ 0
RESET
Text GLabel 1850 2450 2    47   Input ~ 0
MOSI
$Comp
L +5V #PWR09
U 1 1 5A866152
P 1850 2350
F 0 "#PWR09" H 1850 2200 50  0001 C CNN
F 1 "+5V" H 1850 2490 50  0000 C CNN
F 2 "" H 1850 2350 50  0001 C CNN
F 3 "" H 1850 2350 50  0001 C CNN
	1    1850 2350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR010
U 1 1 5A866178
P 1850 2550
F 0 "#PWR010" H 1850 2300 50  0001 C CNN
F 1 "GND" H 1850 2400 50  0000 C CNN
F 2 "" H 1850 2550 50  0001 C CNN
F 3 "" H 1850 2550 50  0001 C CNN
	1    1850 2550
	1    0    0    -1  
$EndComp
Text Notes 950  2850 2    47   ~ 0
Programmer
$Comp
L ATMEGA168PA-AU U1
U 1 1 5A867509
P 6700 1950
F 0 "U1" H 5950 3200 50  0000 L BNN
F 1 "ATMEGA168PA-AU" H 7100 550 50  0000 L BNN
F 2 "Housings_QFP:TQFP-32_7x7mm_Pitch0.8mm" H 6700 1950 50  0001 C CIN
F 3 "" H 6700 1950 50  0001 C CNN
	1    6700 1950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR011
U 1 1 5A868971
P 5600 3250
F 0 "#PWR011" H 5600 3000 50  0001 C CNN
F 1 "GND" H 5600 3100 50  0000 C CNN
F 2 "" H 5600 3250 50  0001 C CNN
F 3 "" H 5600 3250 50  0001 C CNN
	1    5600 3250
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR012
U 1 1 5A86902C
P 4800 750
F 0 "#PWR012" H 4800 600 50  0001 C CNN
F 1 "+5V" H 4800 890 50  0000 C CNN
F 2 "" H 4800 750 50  0001 C CNN
F 3 "" H 4800 750 50  0001 C CNN
	1    4800 750 
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR013
U 1 1 5A86A50A
P 5400 1150
F 0 "#PWR013" H 5400 1000 50  0001 C CNN
F 1 "+5V" H 5400 1290 50  0000 C CNN
F 2 "" H 5400 1150 50  0001 C CNN
F 3 "" H 5400 1150 50  0001 C CNN
	1    5400 1150
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR014
U 1 1 5A86A532
P 5400 1650
F 0 "#PWR014" H 5400 1400 50  0001 C CNN
F 1 "GND" H 5400 1500 50  0000 C CNN
F 2 "" H 5400 1650 50  0001 C CNN
F 3 "" H 5400 1650 50  0001 C CNN
	1    5400 1650
	1    0    0    -1  
$EndComp
$Comp
L C C5
U 1 1 5A86EB3D
P 5700 1700
F 0 "C5" H 5725 1800 50  0000 L CNN
F 1 "100n" H 5725 1600 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 5738 1550 50  0001 C CNN
F 3 "" H 5700 1700 50  0001 C CNN
	1    5700 1700
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR015
U 1 1 5A86F032
P 5700 1950
F 0 "#PWR015" H 5700 1700 50  0001 C CNN
F 1 "GND" H 5700 1800 50  0000 C CNN
F 2 "" H 5700 1950 50  0001 C CNN
F 3 "" H 5700 1950 50  0001 C CNN
	1    5700 1950
	1    0    0    -1  
$EndComp
$Comp
L C C3
U 1 1 5A870BB7
P 5000 1200
F 0 "C3" H 5025 1300 50  0000 L CNN
F 1 "10n" H 5025 1100 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 5038 1050 50  0001 C CNN
F 3 "" H 5000 1200 50  0001 C CNN
	1    5000 1200
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 5A870CE1
P 4600 1200
F 0 "C1" H 4625 1300 50  0000 L CNN
F 1 "100n" H 4625 1100 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 4638 1050 50  0001 C CNN
F 3 "" H 4600 1200 50  0001 C CNN
	1    4600 1200
	1    0    0    -1  
$EndComp
$Comp
L C C2
U 1 1 5A86C618
P 4800 1200
F 0 "C2" H 4825 1300 50  0000 L CNN
F 1 "100n" H 4825 1100 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 4838 1050 50  0001 C CNN
F 3 "" H 4800 1200 50  0001 C CNN
	1    4800 1200
	1    0    0    -1  
$EndComp
$Comp
L C C4
U 1 1 5A871135
P 5400 1400
F 0 "C4" H 5425 1500 50  0000 L CNN
F 1 "100n" H 5425 1300 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 5438 1250 50  0001 C CNN
F 3 "" H 5400 1400 50  0001 C CNN
	1    5400 1400
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR016
U 1 1 5A871192
P 4800 1450
F 0 "#PWR016" H 4800 1200 50  0001 C CNN
F 1 "GND" H 4800 1300 50  0000 C CNN
F 2 "" H 4800 1450 50  0001 C CNN
F 3 "" H 4800 1450 50  0001 C CNN
	1    4800 1450
	1    0    0    -1  
$EndComp
Text GLabel 7900 2100 2    47   Input ~ 0
SDA_H
Text GLabel 7900 2200 2    47   Input ~ 0
SCL_H
Wire Wire Line
	10150 1050 10650 1050
Wire Wire Line
	10650 1150 10400 1150
Wire Wire Line
	10500 750  10650 750 
Wire Wire Line
	10500 850  10650 850 
Wire Wire Line
	10650 950  10500 950 
Wire Notes Line
	9850 500  9850 3500
Wire Notes Line
	9850 1550 11200 1550
Wire Wire Line
	950  1350 1150 1350
Wire Wire Line
	1350 1050 950  1050
Wire Wire Line
	950  950  1150 950 
Wire Wire Line
	950  1150 1150 1150
Wire Wire Line
	1150 1250 950  1250
Wire Notes Line
	500  1950 4200 1950
Wire Notes Line
	1550 500  1550 1950
Wire Wire Line
	2150 1300 2150 1500
Wire Wire Line
	1950 1500 2550 1500
Wire Wire Line
	1950 1700 2950 1700
Wire Wire Line
	2350 1700 2350 1400
Connection ~ 2150 1500
Connection ~ 2350 1700
Wire Wire Line
	2150 800  2150 1000
Wire Wire Line
	2350 900  2350 1100
Wire Wire Line
	3350 1300 3350 1500
Wire Wire Line
	2950 1500 3800 1500
Wire Wire Line
	3600 1400 3600 1700
Wire Wire Line
	3350 1700 3800 1700
Wire Wire Line
	3350 1000 3350 800 
Wire Wire Line
	3600 900  3600 1100
Connection ~ 3350 1500
Connection ~ 3600 1700
Wire Wire Line
	3150 1050 3150 1400
Wire Wire Line
	2750 950  2750 1200
Wire Wire Line
	2150 950  2750 950 
Connection ~ 2150 950 
Wire Wire Line
	2350 1050 3150 1050
Connection ~ 2350 1050
Wire Notes Line
	4200 500  4200 3500
Wire Wire Line
	1150 2350 950  2350
Wire Wire Line
	1150 2450 950  2450
Wire Wire Line
	950  2550 1150 2550
Wire Wire Line
	1650 2450 1850 2450
Wire Wire Line
	1650 2350 1850 2350
Wire Wire Line
	1650 2550 1850 2550
Wire Wire Line
	5800 2950 5600 2950
Wire Wire Line
	5600 2950 5600 3250
Wire Wire Line
	5800 3050 5600 3050
Connection ~ 5600 3050
Wire Wire Line
	5800 3150 5600 3150
Connection ~ 5600 3150
Wire Wire Line
	5400 1550 5400 1650
Connection ~ 5400 1150
Wire Wire Line
	5800 1450 5700 1450
Wire Wire Line
	5700 1450 5700 1550
Wire Wire Line
	5700 1950 5700 1850
Wire Wire Line
	5400 1150 5400 1250
Wire Wire Line
	5800 1150 5400 1150
Wire Wire Line
	4800 850  5800 850 
Wire Wire Line
	4600 950  5800 950 
Wire Wire Line
	4800 750  4800 1050
Wire Wire Line
	4600 950  4600 1050
Connection ~ 4800 950 
Wire Wire Line
	5000 1400 5000 1350
Wire Wire Line
	4600 1400 5000 1400
Wire Wire Line
	4800 1350 4800 1450
Connection ~ 4800 1400
Wire Wire Line
	4600 1400 4600 1350
Connection ~ 4800 850 
Wire Wire Line
	5000 950  5000 1050
Connection ~ 5000 950 
Wire Wire Line
	7900 2100 7700 2100
Wire Wire Line
	7700 2200 7900 2200
Text GLabel 7900 1150 2    47   Input ~ 0
MOSI
Text GLabel 7900 1250 2    47   Input ~ 0
MISO
Text GLabel 7900 1350 2    47   Input ~ 0
SCK
Wire Wire Line
	7700 1150 7900 1150
Wire Wire Line
	7700 1250 7900 1250
Wire Wire Line
	7700 1350 7900 1350
$Comp
L C C6
U 1 1 5A87D267
P 8300 2550
F 0 "C6" H 8325 2650 50  0000 L CNN
F 1 "100n" H 8325 2450 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 8338 2400 50  0001 C CNN
F 3 "" H 8300 2550 50  0001 C CNN
	1    8300 2550
	1    0    0    -1  
$EndComp
$Comp
L R R8
U 1 1 5A87D68D
P 8300 2050
F 0 "R8" V 8380 2050 50  0000 C CNN
F 1 "10k" V 8300 2050 50  0000 C CNN
F 2 "Resistors_SMD:R_0805_HandSoldering" V 8230 2050 50  0001 C CNN
F 3 "" H 8300 2050 50  0001 C CNN
	1    8300 2050
	1    0    0    -1  
$EndComp
Wire Wire Line
	7700 2300 8500 2300
Wire Wire Line
	8300 2200 8300 2400
Connection ~ 8300 2300
$Comp
L +5V #PWR017
U 1 1 5A87EBA7
P 8300 1800
F 0 "#PWR017" H 8300 1650 50  0001 C CNN
F 1 "+5V" H 8300 1940 50  0000 C CNN
F 2 "" H 8300 1800 50  0001 C CNN
F 3 "" H 8300 1800 50  0001 C CNN
	1    8300 1800
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR018
U 1 1 5A87EED1
P 8300 2800
F 0 "#PWR018" H 8300 2550 50  0001 C CNN
F 1 "GND" H 8300 2650 50  0000 C CNN
F 2 "" H 8300 2800 50  0001 C CNN
F 3 "" H 8300 2800 50  0001 C CNN
	1    8300 2800
	1    0    0    -1  
$EndComp
Wire Wire Line
	8300 2800 8300 2700
Wire Wire Line
	8300 1900 8300 1800
Text GLabel 8500 2300 2    47   Input ~ 0
RESET
Text GLabel 7900 1700 2    47   Input ~ 0
NH3
Text GLabel 7900 1800 2    47   Input ~ 0
CO
Text GLabel 7900 1900 2    47   Input ~ 0
NO2
Wire Wire Line
	7900 1900 7700 1900
Wire Wire Line
	7700 1800 7900 1800
Wire Wire Line
	7900 1700 7700 1700
Wire Wire Line
	7700 1550 8450 1550
Wire Wire Line
	7700 1450 8450 1450
$Comp
L GND #PWR019
U 1 1 5A862DDB
P 8950 1500
F 0 "#PWR019" H 8950 1250 50  0001 C CNN
F 1 "GND" H 8950 1350 50  0000 C CNN
F 2 "" H 8950 1500 50  0001 C CNN
F 3 "" H 8950 1500 50  0001 C CNN
	1    8950 1500
	1    0    0    -1  
$EndComp
$Comp
L +5VA #PWR020
U 1 1 5A866692
P 10150 1050
F 0 "#PWR020" H 10150 900 50  0001 C CNN
F 1 "+5VA" H 10150 1190 50  0000 C CNN
F 2 "" H 10150 1050 50  0001 C CNN
F 3 "" H 10150 1050 50  0001 C CNN
	1    10150 1050
	1    0    0    -1  
$EndComp
Text GLabel 7900 850  2    47   Input ~ 0
HEATER_EN
Wire Wire Line
	7900 850  7700 850 
Wire Notes Line
	4200 3500 9850 3500
Text Notes 4700 3450 2    60   ~ 0
Controller
Text GLabel 3500 2550 2    47   Input ~ 0
CO
Text GLabel 3500 2750 2    47   Input ~ 0
NH3
Text GLabel 3500 2350 2    47   Input ~ 0
NO2
$Comp
L +5V #PWR021
U 1 1 5A871FF5
P 2800 2250
F 0 "#PWR021" H 2800 2100 50  0001 C CNN
F 1 "+5V" H 2800 2390 50  0000 C CNN
F 2 "" H 2800 2250 50  0001 C CNN
F 3 "" H 2800 2250 50  0001 C CNN
	1    2800 2250
	1    0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 5A872A50
P 3150 2350
F 0 "R3" V 3230 2350 50  0000 C CNN
F 1 "10k" V 3150 2350 50  0000 C CNN
F 2 "Resistors_SMD:R_0805_HandSoldering" V 3080 2350 50  0001 C CNN
F 3 "" H 3150 2350 50  0001 C CNN
	1    3150 2350
	0    1    1    0   
$EndComp
$Comp
L R R4
U 1 1 5A872CF7
P 3150 2550
F 0 "R4" V 3230 2550 50  0000 C CNN
F 1 "560k" V 3150 2550 50  0000 C CNN
F 2 "Resistors_SMD:R_0805_HandSoldering" V 3080 2550 50  0001 C CNN
F 3 "" H 3150 2550 50  0001 C CNN
	1    3150 2550
	0    1    1    0   
$EndComp
$Comp
L R R5
U 1 1 5A872D91
P 3150 2750
F 0 "R5" V 3230 2750 50  0000 C CNN
F 1 "470k" V 3150 2750 50  0000 C CNN
F 2 "Resistors_SMD:R_0805_HandSoldering" V 3080 2750 50  0001 C CNN
F 3 "" H 3150 2750 50  0001 C CNN
	1    3150 2750
	0    1    1    0   
$EndComp
Wire Wire Line
	3000 2350 2800 2350
Wire Wire Line
	2800 2250 2800 2750
Wire Wire Line
	2800 2550 3000 2550
Connection ~ 2800 2350
Wire Wire Line
	2800 2750 3000 2750
Connection ~ 2800 2550
Wire Wire Line
	3300 2750 3500 2750
Wire Wire Line
	3500 2550 3300 2550
Wire Wire Line
	3300 2350 3500 2350
Text Notes 2650 2850 2    47   ~ 0
Serial Load
Wire Notes Line
	500  2900 4200 2900
Wire Notes Line
	2200 2900 2200 1950
$Comp
L Q_PMOS_GSD Q3
U 1 1 5A875453
P 10850 2300
F 0 "Q3" H 10800 2150 50  0000 L CNN
F 1 "Si2301" V 11100 2150 50  0000 L CNN
F 2 "TO_SOT_Packages_SMD:SOT-23_Handsoldering" H 11050 2400 50  0001 C CNN
F 3 "" H 10850 2300 50  0001 C CNN
	1    10850 2300
	1    0    0    1   
$EndComp
Text GLabel 10450 2300 0    47   Input ~ 0
HEATER_EN
Wire Wire Line
	10650 2300 10450 2300
$Comp
L +5V #PWR022
U 1 1 5A878292
P 10950 1900
F 0 "#PWR022" H 10950 1750 50  0001 C CNN
F 1 "+5V" H 10950 2040 50  0000 C CNN
F 2 "" H 10950 1900 50  0001 C CNN
F 3 "" H 10950 1900 50  0001 C CNN
	1    10950 1900
	1    0    0    -1  
$EndComp
Wire Wire Line
	10950 1900 10950 2100
Wire Wire Line
	10950 2750 10950 2500
Wire Wire Line
	10750 2750 10950 2750
$Comp
L +5VA #PWR023
U 1 1 5A8783FA
P 10750 2650
F 0 "#PWR023" H 10750 2500 50  0001 C CNN
F 1 "+5VA" H 10750 2790 50  0000 C CNN
F 2 "" H 10750 2650 50  0001 C CNN
F 3 "" H 10750 2650 50  0001 C CNN
	1    10750 2650
	1    0    0    -1  
$EndComp
Wire Wire Line
	10750 2750 10750 2650
Text Notes 10550 2900 2    60   ~ 0
Heater control
Wire Notes Line
	11200 2950 9850 2950
NoConn ~ 5800 2200
NoConn ~ 5800 2300
NoConn ~ 7700 3150
NoConn ~ 7700 3050
NoConn ~ 7700 2950
NoConn ~ 7700 2850
NoConn ~ 7700 2750
NoConn ~ 7700 2650
NoConn ~ 7700 2550
NoConn ~ 7700 2450
NoConn ~ 7700 2000
NoConn ~ 7700 1050
NoConn ~ 7700 950 
Connection ~ 7350 1150
$Comp
L Resonator_Small Y1
U 1 1 5A86A78E
P 8650 1500
F 0 "Y1" V 8800 1450 50  0000 L CNN
F 1 "Resonator" V 8450 1350 50  0000 L CNN
F 2 "Crystals:Resonator_SMD-3pin_7.2x3.0mm_HandSoldering" H 8625 1500 50  0001 C CNN
F 3 "" H 8625 1500 50  0001 C CNN
	1    8650 1500
	0    -1   -1   0   
$EndComp
Wire Wire Line
	8450 1450 8450 1400
Wire Wire Line
	8450 1400 8550 1400
Wire Wire Line
	8550 1600 8450 1600
Wire Wire Line
	8450 1600 8450 1550
Wire Wire Line
	8850 1500 8950 1500
$EndSCHEMATC