EESchema Schematic File Version 4
LIBS:CRV2-cache
EELAYER 29 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 9 11
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L power:+3.3V #PWR034
U 1 1 5C95D502
P 3700 2100
F 0 "#PWR034" H 3700 1950 50  0001 C CNN
F 1 "+3.3V" V 3715 2228 50  0000 L CNN
F 2 "" H 3700 2100 50  0001 C CNN
F 3 "" H 3700 2100 50  0001 C CNN
	1    3700 2100
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C12
U 1 1 5C95D53E
P 4750 2250
F 0 "C12" H 4865 2296 50  0000 L CNN
F 1 "1uF" H 4865 2205 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 4788 2100 50  0001 C CNN
F 3 "~" H 4750 2250 50  0001 C CNN
	1    4750 2250
	1    0    0    -1  
$EndComp
Wire Wire Line
	3700 2100 3800 2100
Wire Wire Line
	5100 2100 5100 2300
$Comp
L power:GND #PWR035
U 1 1 5C95D5AB
P 4750 2450
F 0 "#PWR035" H 4750 2200 50  0001 C CNN
F 1 "GND" H 4755 2277 50  0000 C CNN
F 2 "" H 4750 2450 50  0001 C CNN
F 3 "" H 4750 2450 50  0001 C CNN
	1    4750 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 2100 3800 2950
Wire Wire Line
	3800 2950 4300 2950
Wire Wire Line
	4300 2950 4300 2700
Wire Wire Line
	4300 2700 4850 2700
Connection ~ 3800 2100
$Comp
L Connector:Conn_01x04_Male J6
U 1 1 5C95D6BC
P 3350 3050
F 0 "J6" H 3456 3328 50  0000 C CNN
F 1 "Conn_01x04_Male" H 3456 3237 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 3350 3050 50  0001 C CNN
F 3 "~" H 3350 3050 50  0001 C CNN
	1    3350 3050
	1    0    0    -1  
$EndComp
Wire Wire Line
	3800 2950 3550 2950
Connection ~ 3800 2950
Wire Wire Line
	4650 3600 4650 3700
Wire Wire Line
	4650 3700 4850 3700
Wire Wire Line
	4650 3600 4850 3600
$Comp
L Device:C C11
U 1 1 5C95DD11
P 4500 3050
F 0 "C11" H 4615 3096 50  0000 L CNN
F 1 "0.1uF" H 4615 3005 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 4538 2900 50  0001 C CNN
F 3 "~" H 4500 3050 50  0001 C CNN
	1    4500 3050
	1    0    0    -1  
$EndComp
Wire Wire Line
	4850 3000 4850 2900
Wire Wire Line
	4500 2900 4850 2900
Wire Wire Line
	4500 3200 4850 3200
Wire Wire Line
	4850 3200 4850 3150
Text Notes 4300 3200 0    50   ~ 0
Place very close
$Comp
L power:+3.3V #PWR038
U 1 1 5C95E4BB
P 7100 2100
F 0 "#PWR038" H 7100 1950 50  0001 C CNN
F 1 "+3.3V" V 7115 2228 50  0000 L CNN
F 2 "" H 7100 2100 50  0001 C CNN
F 3 "" H 7100 2100 50  0001 C CNN
	1    7100 2100
	0    1    1    0   
$EndComp
Wire Wire Line
	5750 2100 5750 2300
$Comp
L Device:C C13
U 1 1 5C95E7B1
P 6150 2350
F 0 "C13" H 6265 2396 50  0000 L CNN
F 1 "1uF" H 6265 2305 50  0000 L CNN
F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 6188 2200 50  0001 C CNN
F 3 "~" H 6150 2350 50  0001 C CNN
	1    6150 2350
	1    0    0    -1  
$EndComp
Wire Wire Line
	6150 2200 6150 2100
Connection ~ 6150 2100
Wire Wire Line
	6150 2100 5750 2100
$Comp
L power:GND #PWR037
U 1 1 5C95EB0F
P 6150 2550
F 0 "#PWR037" H 6150 2300 50  0001 C CNN
F 1 "GND" H 6155 2377 50  0000 C CNN
F 2 "" H 6150 2550 50  0001 C CNN
F 3 "" H 6150 2550 50  0001 C CNN
	1    6150 2550
	1    0    0    -1  
$EndComp
Wire Wire Line
	6150 2500 6150 2550
$Comp
L power:GND #PWR036
U 1 1 5C95EE78
P 5450 4050
F 0 "#PWR036" H 5450 3800 50  0001 C CNN
F 1 "GND" H 5455 3877 50  0000 C CNN
F 2 "" H 5450 4050 50  0001 C CNN
F 3 "" H 5450 4050 50  0001 C CNN
	1    5450 4050
	1    0    0    -1  
$EndComp
Wire Wire Line
	5450 3950 5450 4050
Wire Wire Line
	6000 3950 6000 3700
Connection ~ 4750 2100
Wire Wire Line
	4750 2100 5100 2100
Wire Wire Line
	3800 2100 4750 2100
Wire Wire Line
	4750 2400 4750 2450
Text Notes 4400 2200 0    50   ~ 0
Place very close
Text Notes 5850 2250 0    50   ~ 0
Place very close
$Comp
L Device:R R6
U 1 1 5C960356
P 6900 2650
F 0 "R6" H 6970 2696 50  0000 L CNN
F 1 "1k" V 6900 2550 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 6830 2650 50  0001 C CNN
F 3 "~" H 6900 2650 50  0001 C CNN
	1    6900 2650
	1    0    0    -1  
$EndComp
Text Notes 7150 2650 0    50   ~ 0
Pulled high for 80SPS sample rate and no standby\n
Text HLabel 6050 3000 2    50   Input ~ 0
LOADCELL_DOUT
Text HLabel 6050 3100 2    50   Input ~ 0
LOADCELL_CLK
Wire Wire Line
	6000 3000 6050 3000
Wire Wire Line
	6000 3100 6050 3100
$Comp
L Device:R R5
U 1 1 5C961E6F
P 6750 2650
F 0 "R5" H 6600 2700 50  0000 L CNN
F 1 "1k" V 6750 2550 50  0000 L CNN
F 2 "Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder" V 6680 2650 50  0001 C CNN
F 3 "~" H 6750 2650 50  0001 C CNN
	1    6750 2650
	1    0    0    -1  
$EndComp
Wire Wire Line
	6150 2100 6750 2100
Wire Wire Line
	6900 3300 6900 2800
Wire Wire Line
	6000 3300 6900 3300
Wire Wire Line
	6000 3200 6750 3200
Wire Wire Line
	6750 3200 6750 2800
Wire Wire Line
	6750 2500 6750 2100
Connection ~ 6750 2100
Wire Wire Line
	6750 2100 6900 2100
Wire Wire Line
	6900 2500 6900 2100
Connection ~ 6900 2100
Wire Wire Line
	6900 2100 7100 2100
Wire Wire Line
	4650 3600 3800 3600
Wire Wire Line
	3800 3600 3800 3050
Wire Wire Line
	3800 3050 3550 3050
Connection ~ 4650 3600
Wire Wire Line
	3900 3350 3900 3150
Wire Wire Line
	3900 3150 3550 3150
Wire Wire Line
	3900 3350 4850 3350
Wire Wire Line
	3600 3450 3600 3250
Wire Wire Line
	3600 3250 3550 3250
Wire Wire Line
	3600 3450 4850 3450
Text Notes 2750 3350 0    50   ~ 0
TODO: Replace this with a proper connector\n
Connection ~ 5450 3950
Wire Wire Line
	5550 3950 6000 3950
Wire Wire Line
	5450 3950 5550 3950
Connection ~ 5550 3950
$Comp
L FredsCustom:ADS1231IDR U?
U 1 1 5C95C5E1
P 5450 2950
AR Path="/5C95C5E1" Ref="U?"  Part="1" 
AR Path="/5C956F79/5C95C5E1" Ref="U2"  Part="1" 
F 0 "U2" H 5425 3515 50  0000 C CNN
F 1 "ADS1231IDR" H 5425 3424 50  0000 C CNN
F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 5250 2950 50  0001 C CNN
F 3 "" H 5250 2950 50  0001 C CNN
	1    5450 2950
	1    0    0    -1  
$EndComp
$EndSCHEMATC