EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L MCU_Microchip_ATtiny:ATtiny44A-SSU U1
U 1 1 5E7DFAAD
P 3850 2600
F 0 "U1" H 3320 2646 50  0000 R CNN
F 1 "ATtiny44A-SSU" H 3320 2555 50  0000 R CNN
F 2 "fab:fab-SOIC14" H 3850 2600 50  0001 C CIN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/doc8183.pdf" H 3850 2600 50  0001 C CNN
	1    3850 2600
	1    0    0    -1  
$EndComp
$Comp
L fab:FTDI-SMD-HEADER M1
U 1 1 5E7E21A9
P 5450 2800
F 0 "M1" H 5450 2800 45  0001 C CNN
F 1 "FTDI-SMD-HEADER" H 5450 2800 45  0001 C CNN
F 2 "Connectors:1X06" H 5480 2950 20  0001 C CNN
F 3 "" H 5450 2800 50  0001 C CNN
	1    5450 2800
	1    0    0    -1  
$EndComp
$Comp
L Device:R R1
U 1 1 5E7E6128
P 3450 1400
F 0 "R1" H 3520 1446 50  0000 L CNN
F 1 "10K" H 3520 1355 50  0000 L CNN
F 2 "digikey-footprints:1206" V 3380 1400 50  0001 C CNN
F 3 "~" H 3450 1400 50  0001 C CNN
	1    3450 1400
	0    1    1    0   
$EndComp
$Comp
L Device:C C1
U 1 1 5E7E6F41
P 4350 1400
F 0 "C1" H 4465 1446 50  0000 L CNN
F 1 "1uF" H 4465 1355 50  0000 L CNN
F 2 "digikey-footprints:1206" H 4388 1250 50  0001 C CNN
F 3 "~" H 4350 1400 50  0001 C CNN
	1    4350 1400
	0    -1   -1   0   
$EndComp
$Comp
L Connector:AVR-ISP-6 J1
U 1 1 5E808842
P 3800 4400
F 0 "J1" V 3425 4450 50  0000 C CNN
F 1 "AVR-ISP-6" V 3334 4450 50  0000 C CNN
F 2 "Connectors:2X3_SMD" V 3550 4450 50  0001 C CNN
F 3 " ~" H 2525 3850 50  0001 C CNN
	1    3800 4400
	0    1    1    0   
$EndComp
Wire Wire Line
	3300 1400 3300 1600
Wire Wire Line
	3300 1600 3850 1600
Wire Wire Line
	3850 1600 3850 1700
Wire Wire Line
	3300 1400 3300 1200
Wire Wire Line
	3300 1200 4200 1200
Wire Wire Line
	4200 1200 4200 1400
Connection ~ 3300 1400
Wire Wire Line
	4200 1200 6100 1200
Connection ~ 4200 1200
Wire Wire Line
	4500 1400 5000 1400
Wire Wire Line
	5000 1400 5000 2300
Wire Wire Line
	5000 2300 5450 2300
Wire Wire Line
	3500 3000 4450 3000
Wire Wire Line
	3850 3750 3850 3500
Text Label 3800 4950 3    50   ~ 0
SCK
Wire Wire Line
	3800 4800 3800 4950
Text Label 4000 4950 3    50   ~ 0
MISO
Wire Wire Line
	4000 4950 4000 4800
Text Label 4600 2500 0    50   ~ 0
MISO
Wire Wire Line
	4450 2500 4600 2500
Text Label 4600 2400 0    50   ~ 0
SCK
Wire Wire Line
	4450 2400 4600 2400
Text Label 3700 4950 3    50   ~ 0
RST
Wire Wire Line
	3700 4800 3700 4950
Text Label 3900 4950 3    50   ~ 0
MOSI
Wire Wire Line
	3900 4800 3900 4950
Text Label 4600 2600 0    50   ~ 0
MOSI
Wire Wire Line
	4450 2600 4600 2600
Text Label 3750 1400 0    50   ~ 0
RST
Wire Wire Line
	3600 1400 3650 1400
Wire Wire Line
	3650 1400 3650 1500
Wire Wire Line
	3650 1500 4000 1500
Wire Wire Line
	4000 1500 4000 2800
Wire Wire Line
	4000 2800 4750 2800
Wire Wire Line
	4750 2800 4750 3200
Wire Wire Line
	4750 3200 4450 3200
Connection ~ 3650 1400
Wire Wire Line
	3650 1400 3750 1400
Wire Wire Line
	3850 3500 4850 3500
Wire Wire Line
	4850 3500 4850 1550
Wire Wire Line
	4850 1550 4500 1550
Wire Wire Line
	4500 1550 4500 1400
Connection ~ 3850 3500
Connection ~ 4500 1400
Text Label 4600 2000 0    50   ~ 0
TX
Text Label 5300 2600 2    50   ~ 0
TX
Wire Wire Line
	5450 2600 5300 2600
Wire Wire Line
	4450 2000 4600 2000
Wire Wire Line
	3400 4300 3400 3750
Wire Wire Line
	3400 3750 3850 3750
Wire Wire Line
	4300 4300 6100 4300
NoConn ~ 5450 2400
NoConn ~ 5450 2800
Text Label 5300 2700 2    50   ~ 0
RX
Wire Wire Line
	5300 2700 5450 2700
Text Label 4600 2100 0    50   ~ 0
RX
Wire Wire Line
	4450 2100 4600 2100
Wire Wire Line
	3650 2900 4450 2900
Text Label 5450 2300 2    50   ~ 0
GND
Text Label 5450 2500 2    50   ~ 0
VCC
Text Label 4600 3100 0    50   ~ 0
DO
Text Label 4600 2700 0    50   ~ 0
AO
Wire Wire Line
	4450 2700 4600 2700
Wire Wire Line
	4450 3100 4600 3100
NoConn ~ 4450 2200
NoConn ~ 4450 2300
$Comp
L power:PWR_FLAG #FLG02
U 1 1 5E9ABDA8
P 7050 1750
F 0 "#FLG02" H 7050 1825 50  0001 C CNN
F 1 "PWR_FLAG" H 7050 1923 50  0000 C CNN
F 2 "" H 7050 1750 50  0001 C CNN
F 3 "~" H 7050 1750 50  0001 C CNN
	1    7050 1750
	-1   0    0    1   
$EndComp
Wire Wire Line
	8300 3450 8300 3700
Connection ~ 7450 3150
Wire Wire Line
	7900 3300 8250 3300
Wire Wire Line
	7900 3150 7900 3300
Wire Wire Line
	7450 3150 7900 3150
Connection ~ 7000 3250
Wire Wire Line
	7200 3250 7000 3250
Wire Wire Line
	7200 3150 7200 3250
Wire Wire Line
	7450 3150 7200 3150
Wire Wire Line
	7200 2700 7200 2550
Wire Wire Line
	7000 2700 7200 2700
Wire Wire Line
	7000 3250 7000 3000
Wire Wire Line
	6850 3250 7000 3250
$Comp
L Device:R R2
U 1 1 5E900CC0
P 7000 2850
F 0 "R2" H 7070 2896 50  0000 L CNN
F 1 "510K" H 7070 2805 50  0000 L CNN
F 2 "digikey-footprints:0805" V 6930 2850 50  0001 C CNN
F 3 "~" H 7000 2850 50  0001 C CNN
	1    7000 2850
	1    0    0    -1  
$EndComp
Text Label 7200 2550 1    50   ~ 0
VCC
Text Label 8250 3300 0    50   ~ 0
AO
Text Label 8300 3700 3    50   ~ 0
GND
$Comp
L Device:C C2
U 1 1 5E900676
P 7450 3300
F 0 "C2" H 7565 3346 50  0000 L CNN
F 1 "0.1uF" H 7565 3255 50  0000 L CNN
F 2 "digikey-footprints:1206" H 7488 3150 50  0001 C CNN
F 3 "~" H 7450 3300 50  0001 C CNN
	1    7450 3300
	1    0    0    -1  
$EndComp
$Comp
L SparkFun-Connectors:CONN_02 J2
U 1 1 5E900384
P 6750 3350
F 0 "J2" H 6708 3760 45  0000 C CNN
F 1 "CONN_02" H 6708 3676 45  0000 C CNN
F 2 "Connectors:1X02" H 6750 3600 20  0001 C CNN
F 3 "" H 6750 3350 50  0001 C CNN
F 4 "XXX-00000" H 6708 3581 60  0000 C CNN "Field4"
	1    6750 3350
	1    0    0    -1  
$EndComp
$Comp
L Device:R R3
U 1 1 5E7F0EA9
P 9100 3450
F 0 "R3" H 9170 3496 50  0000 L CNN
F 1 "4.7K" H 9170 3405 50  0000 L CNN
F 2 "digikey-footprints:1206" V 9030 3450 50  0001 C CNN
F 3 "~" H 9100 3450 50  0001 C CNN
	1    9100 3450
	0    -1   -1   0   
$EndComp
$Comp
L SparkFun-Connectors:CONN_03POGO_PIN_HOLES_ONLY J3
U 1 1 5E82126A
P 9000 2750
F 0 "J3" H 8958 3260 45  0000 C CNN
F 1 "CONN_03POGO_PIN_HOLES_ONLY" H 8958 3176 45  0000 C CNN
F 2 "digikey-footprints:PinHeader_1x3_P2.54_Drill1.1mm" H 9000 3150 20  0001 C CNN
F 3 "" H 9000 2750 50  0001 C CNN
F 4 "XXX-00000" H 8958 3081 60  0000 C CNN "Field4"
	1    9000 2750
	0    1    1    0   
$EndComp
Text Label 9250 3750 3    50   ~ 0
VCC
Wire Wire Line
	9000 2850 8700 2850
Wire Wire Line
	8700 2850 8700 3750
Wire Wire Line
	9100 3100 8950 3100
Wire Wire Line
	8950 3100 8950 3450
Connection ~ 8950 3450
Wire Wire Line
	9200 2850 9200 3100
Wire Wire Line
	9200 3100 9250 3100
Wire Wire Line
	9250 3100 9250 3450
Wire Wire Line
	9250 3450 9250 3750
Connection ~ 9250 3450
Wire Wire Line
	8950 3450 8950 3750
Text Label 8950 3750 3    50   ~ 0
DO
Wire Wire Line
	7050 1400 7050 1750
Text Label 7050 1400 1    50   ~ 0
VCC
Wire Wire Line
	6600 1400 6600 1750
Text Label 6600 1750 3    50   ~ 0
GND
$Comp
L power:PWR_FLAG #FLG01
U 1 1 5E9ABA33
P 6600 1400
F 0 "#FLG01" H 6600 1475 50  0001 C CNN
F 1 "PWR_FLAG" H 6600 1573 50  0000 C CNN
F 2 "" H 6600 1400 50  0001 C CNN
F 3 "~" H 6600 1400 50  0001 C CNN
	1    6600 1400
	1    0    0    -1  
$EndComp
Wire Wire Line
	6100 4300 6100 2500
Wire Wire Line
	6100 1200 6100 2500
Connection ~ 6100 2500
Wire Wire Line
	6100 2500 5450 2500
Wire Wire Line
	9100 3100 9100 2850
$Comp
L ECS-CR2-20.00-B-TR:ECS-CR2-20.00-B-TR Y1
U 1 1 5ECE57E3
P 2400 2150
F 0 "Y1" H 2400 2615 50  0000 C CNN
F 1 "20MHz" H 2400 2524 50  0000 C CNN
F 2 "ECS-CR2-20:XTAL_ECS-CR2-20.00-B-TR" H 2400 2150 50  0001 L BNN
F 3 "N/A" H 2400 2150 50  0001 L BNN
F 4 "Manufacturer Recommendations" H 2400 2150 50  0001 L BNN "Field4"
F 5 "ECS Inc" H 2400 2150 50  0001 L BNN "Field5"
	1    2400 2150
	1    0    0    -1  
$EndComp
Wire Wire Line
	1700 2050 1700 1700
Wire Wire Line
	1700 1700 3650 1700
Wire Wire Line
	3650 1700 3650 2900
Wire Wire Line
	3100 2050 3500 2050
Wire Wire Line
	3500 2050 3500 3000
$Comp
L Device:Jumper JP1
U 1 1 5ED299AD
P 3100 3350
F 0 "JP1" V 3054 3476 50  0000 L CNN
F 1 "0" V 3145 3476 50  0000 L CNN
F 2 "digikey-footprints:1206" H 3100 3350 50  0001 C CNN
F 3 "~" H 3100 3350 50  0001 C CNN
	1    3100 3350
	0    1    1    0   
$EndComp
$Comp
L Device:Jumper JP2
U 1 1 5ED2BB2B
P 7850 3450
F 0 "JP2" H 7850 3225 50  0000 C CNN
F 1 "0" H 7850 3316 50  0000 C CNN
F 2 "digikey-footprints:1206" H 7850 3450 50  0001 C CNN
F 3 "~" H 7850 3450 50  0001 C CNN
	1    7850 3450
	-1   0    0    1   
$EndComp
Wire Wire Line
	3100 3650 3100 3900
Wire Wire Line
	3100 2250 3100 3050
Wire Wire Line
	8150 3450 8300 3450
Wire Wire Line
	6850 3350 6850 3450
Wire Wire Line
	6850 3450 7450 3450
Wire Wire Line
	7450 3450 7550 3450
Connection ~ 7450 3450
Text Label 2850 3900 2    50   ~ 0
connection
Wire Wire Line
	2850 3900 3100 3900
Text Label 7550 3550 3    50   ~ 0
connection
Wire Wire Line
	7550 3550 7550 3450
Connection ~ 7550 3450
Text Label 8700 3750 3    50   ~ 0
connection
$EndSCHEMATC