microbit-classroom-sensor/lts-proto.sch

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:lts
LIBS:lts-proto-cache
EELAYER 25 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 1 3
Title "LTS Prototype"
Date "2018-02-06"
Rev "AA"
Comp "Let's Talk Science"
Comment1 "Shawn Nock <shawn@monadnock.ca>"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text Notes 7700 2200 0    60   ~ 0
LED Array Face
Wire Wire Line
	9650 2400 10150 2400
Connection ~ 10050 2400
Connection ~ 9950 2400
Connection ~ 9850 2400
Connection ~ 9750 2400
$Comp
L GND #PWR01
U 1 1 5A7A186C
P 9900 2400
F 0 "#PWR01" H 9900 2150 50  0001 C CNN
F 1 "GND" H 9900 2250 50  0000 C CNN
F 2 "" H 9900 2400 50  0001 C CNN
F 3 "" H 9900 2400 50  0001 C CNN
	1    9900 2400
	1    0    0    -1  
$EndComp
Connection ~ 9900 2400
Wire Wire Line
	9550 2400 9550 3300
Wire Wire Line
	9450 2400 9450 2950
Wire Wire Line
	8850 2400 9350 2400
Connection ~ 9250 2400
Connection ~ 9150 2400
Connection ~ 9050 2400
Connection ~ 8950 2400
$Comp
L +3.3V #PWR02
U 1 1 5A7A1901
P 9100 2400
F 0 "#PWR02" H 9100 2250 50  0001 C CNN
F 1 "+3.3V" H 9100 2540 50  0000 C CNN
F 2 "" H 9100 2400 50  0001 C CNN
F 3 "" H 9100 2400 50  0001 C CNN
	1    9100 2400
	-1   0    0    1   
$EndComp
Connection ~ 9100 2400
NoConn ~ 10150 1900
NoConn ~ 9650 1900
NoConn ~ 9550 1900
NoConn ~ 9450 1900
NoConn ~ 9350 1900
NoConn ~ 8850 1900
NoConn ~ 8750 1900
NoConn ~ 8650 1900
NoConn ~ 8550 1900
NoConn ~ 8450 1900
NoConn ~ 7950 1900
NoConn ~ 7850 1900
NoConn ~ 7750 1900
NoConn ~ 7650 1900
NoConn ~ 7550 1900
NoConn ~ 7050 1900
NoConn ~ 6950 1900
NoConn ~ 6850 1900
NoConn ~ 6750 1900
NoConn ~ 6250 1900
Wire Wire Line
	8050 2400 8350 2400
Connection ~ 8250 2400
Connection ~ 8150 2400
Wire Wire Line
	8200 1900 8200 2700
Connection ~ 8200 2400
NoConn ~ 7850 2400
NoConn ~ 7750 2400
NoConn ~ 7650 2400
Wire Wire Line
	7150 2400 7450 2400
Connection ~ 7350 2400
Connection ~ 7250 2400
Wire Wire Line
	7300 1900 7300 2700
Connection ~ 7300 2400
NoConn ~ 7050 2400
NoConn ~ 6950 2400
NoConn ~ 6850 2400
NoConn ~ 6750 2400
Wire Wire Line
	6350 2400 6650 2400
Connection ~ 6550 2400
Connection ~ 6450 2400
NoConn ~ 6250 2400
Connection ~ 6500 2400
Text Label 6500 2700 1    60   ~ 0
P00
Text Label 7300 2700 1    60   ~ 0
P01
Text Label 8200 2700 1    60   ~ 0
P02
$Comp
L Conn_02x40_Row_Letter_First J18
U 1 1 5A7A1723
P 8150 2200
F 0 "J18" H 8200 4200 50  0000 C CNN
F 1 "Micro:bit Edge Connector" V 8200 2200 50  0000 C CNN
F 2 "lts:RBB40DHHN" H 8150 2200 50  0001 C CNN
F 3 "" H 8150 2200 50  0001 C CNN
	1    8150 2200
	0    -1   -1   0   
$EndComp
Wire Wire Line
	9750 1900 10050 1900
Connection ~ 9950 1900
Connection ~ 9850 1900
Wire Wire Line
	8950 1900 9250 1900
Connection ~ 9150 1900
Connection ~ 9050 1900
Wire Wire Line
	7150 1900 7450 1900
Connection ~ 7350 1900
Connection ~ 7250 1900
Wire Wire Line
	6350 1900 6650 1900
Connection ~ 6550 1900
Connection ~ 6450 1900
Connection ~ 6500 1900
Connection ~ 7300 1900
Wire Wire Line
	9100 2400 9100 1900
Connection ~ 9100 1900
Wire Wire Line
	9900 2400 9900 1900
Connection ~ 9900 1900
Wire Wire Line
	8050 1900 8350 1900
Connection ~ 8150 1900
Connection ~ 8250 1900
Connection ~ 8200 1900
NoConn ~ 7950 2400
Text Label 8750 2700 1    60   ~ 0
P16
Text Label 8650 2700 1    60   ~ 0
P15
Text Label 8550 2700 1    60   ~ 0
P14
Text Label 8450 2700 1    60   ~ 0
P13
$Comp
L USB_OTG J1
U 1 1 5A7BAC5E
P 1000 2550
F 0 "J1" H 800 3000 50  0000 L CNN
F 1 "USB_B" H 800 2900 50  0000 L CNN
F 2 "Connectors:USB_Micro-B" H 1150 2500 50  0001 C CNN
F 3 "" H 1150 2500 50  0001 C CNN
	1    1000 2550
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR03
U 1 1 5A7BAC5F
P 1000 3050
F 0 "#PWR03" H 1000 2800 50  0001 C CNN
F 1 "GND" H 1000 2900 50  0000 C CNN
F 2 "" H 1000 3050 50  0001 C CNN
F 3 "" H 1000 3050 50  0001 C CNN
	1    1000 3050
	1    0    0    -1  
$EndComp
$Comp
L C C9
U 1 1 5A7BAC66
P 9250 4050
F 0 "C9" H 9275 4150 50  0000 L CNN
F 1 "DNP" H 9275 3950 50  0000 L CNN
F 2 "Capacitors_SMD:C_1206_HandSoldering" H 9288 3900 50  0001 C CNN
F 3 "" H 9250 4050 50  0001 C CNN
	1    9250 4050
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR04
U 1 1 5A7BAC67
P 9250 3900
F 0 "#PWR04" H 9250 3750 50  0001 C CNN
F 1 "+3.3V" H 9250 4040 50  0000 C CNN
F 2 "" H 9250 3900 50  0001 C CNN
F 3 "" H 9250 3900 50  0001 C CNN
	1    9250 3900
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR05
U 1 1 5A7BAC68
P 9250 4200
F 0 "#PWR05" H 9250 3950 50  0001 C CNN
F 1 "GND" H 9250 4050 50  0000 C CNN
F 2 "" H 9250 4200 50  0001 C CNN
F 3 "" H 9250 4200 50  0001 C CNN
	1    9250 4200
	1    0    0    -1  
$EndComp
$Comp
L +3.3V #PWR06
U 1 1 5A7BAC69
P 2800 1300
F 0 "#PWR06" H 2800 1150 50  0001 C CNN
F 1 "+3.3V" H 2800 1440 50  0000 C CNN
F 2 "" H 2800 1300 50  0001 C CNN
F 3 "" H 2800 1300 50  0001 C CNN
	1    2800 1300
	1    0    0    -1  
$EndComp
$Comp
L ESDR0502N U1
U 1 1 5A7BAC6A
P 2200 3200
F 0 "U1" H 2500 3400 60  0000 C CNN
F 1 "ESDR0502N" H 2350 3000 60  0000 C CNN
F 2 "Housings_DFN_QFN:DFN-6-1.3x1.2mm_Pitch0.4mm" H 2200 3200 60  0001 C CNN
F 3 "" H 2200 3200 60  0001 C CNN
	1    2200 3200
	1    0    0    -1  
$EndComp
Wire Wire Line
	1000 2950 1000 3050
Wire Wire Line
	900  2950 1000 2950
Wire Wire Line
	1300 2650 3200 2650
Wire Wire Line
	1300 2550 3200 2550
Wire Wire Line
	1300 2350 2500 2350
Wire Wire Line
	2500 2350 2500 2150
Wire Wire Line
	2500 2150 3200 2150
Wire Wire Line
	3050 2150 3050 2050
Wire Wire Line
	3050 2050 3200 2050
Connection ~ 3050 2150
Wire Wire Line
	2050 2850 2050 2350
Connection ~ 2050 2350
Wire Wire Line
	2150 2550 2150 2850
Connection ~ 2150 2550
Wire Wire Line
	2250 2650 2250 2850
Connection ~ 2250 2650
$Comp
L GND #PWR07
U 1 1 5A7BAC6B
P 1700 3400
F 0 "#PWR07" H 1700 3150 50  0001 C CNN
F 1 "GND" H 1700 3250 50  0000 C CNN
F 2 "" H 1700 3400 50  0001 C CNN
F 3 "" H 1700 3400 50  0001 C CNN
	1    1700 3400
	1    0    0    -1  
$EndComp
Connection ~ 1550 2350
Text Notes 8900 4450 0    30   ~ 0
Bulk Capacitance if Micro:bit powered
$Comp
L TEST_1P J12
U 1 1 5A7BAC6D
P 3750 7100
F 0 "J12" H 3750 7370 50  0000 C CNN
F 1 "5V" H 3750 7300 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Small" H 3950 7100 50  0001 C CNN
F 3 "" H 3950 7100 50  0001 C CNN
	1    3750 7100
	1    0    0    -1  
$EndComp
$Comp
L VBUS #PWR08
U 1 1 5A7BAC6E
P 3750 7100
F 0 "#PWR08" H 3750 6950 50  0001 C CNN
F 1 "VBUS" H 3750 7250 50  0000 C CNN
F 2 "" H 3750 7100 50  0001 C CNN
F 3 "" H 3750 7100 50  0001 C CNN
	1    3750 7100
	-1   0    0    1   
$EndComp
$Comp
L R R1
U 1 1 5A7BAC6F
P 3050 2350
F 0 "R1" V 3130 2350 50  0000 C CNN
F 1 "1k" V 3050 2350 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 2980 2350 50  0001 C CNN
F 3 "" H 3050 2350 50  0001 C CNN
	1    3050 2350
	0    1    1    0   
$EndComp
$Comp
L VBUS #PWR09
U 1 1 5A7BAC70
P 3800 1050
F 0 "#PWR09" H 3800 900 50  0001 C CNN
F 1 "VBUS" H 3800 1200 50  0000 C CNN
F 2 "" H 3800 1050 50  0001 C CNN
F 3 "" H 3800 1050 50  0001 C CNN
	1    3800 1050
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 5A7BAC71
P 3650 1250
F 0 "C1" H 3550 1350 50  0000 L CNN
F 1 "4.7uF" H 3400 1150 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 3688 1100 50  0001 C CNN
F 3 "" H 3650 1250 50  0001 C CNN
	1    3650 1250
	1    0    0    -1  
$EndComp
$Comp
L C C2
U 1 1 5A7BAC72
P 3950 1250
F 0 "C2" H 3975 1350 50  0000 L CNN
F 1 "0.1uF" H 3975 1150 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 3988 1100 50  0001 C CNN
F 3 "" H 3950 1250 50  0001 C CNN
	1    3950 1250
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR010
U 1 1 5A7BAC73
P 3800 1450
F 0 "#PWR010" H 3800 1200 50  0001 C CNN
F 1 "GND" H 3800 1300 50  0000 C CNN
F 2 "" H 3800 1450 50  0001 C CNN
F 3 "" H 3800 1450 50  0001 C CNN
	1    3800 1450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 1100 3950 1100
Wire Wire Line
	3800 1100 3800 1050
Connection ~ 3800 1100
Wire Wire Line
	3800 1450 3800 1400
Wire Wire Line
	3650 1400 3950 1400
Connection ~ 3800 1400
$Comp
L C C4
U 1 1 5A7BAC74
P 2350 1650
F 0 "C4" H 2250 1750 50  0000 L CNN
F 1 "4.7uF" H 2100 1550 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 2388 1500 50  0001 C CNN
F 3 "" H 2350 1650 50  0001 C CNN
	1    2350 1650
	-1   0    0    1   
$EndComp
$Comp
L C C5
U 1 1 5A7BAC75
P 2050 1650
F 0 "C5" H 2075 1750 50  0000 L CNN
F 1 "0.1uF" H 2075 1550 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 2088 1500 50  0001 C CNN
F 3 "" H 2050 1650 50  0001 C CNN
	1    2050 1650
	-1   0    0    1   
$EndComp
$Comp
L GND #PWR011
U 1 1 5A7BAC76
P 2200 1450
F 0 "#PWR011" H 2200 1200 50  0001 C CNN
F 1 "GND" H 2200 1300 50  0000 C CNN
F 2 "" H 2200 1450 50  0001 C CNN
F 3 "" H 2200 1450 50  0001 C CNN
	1    2200 1450
	-1   0    0    1   
$EndComp
Wire Wire Line
	2050 1800 2350 1800
Wire Wire Line
	2200 1450 2200 1500
Wire Wire Line
	2050 1500 2350 1500
Connection ~ 2200 1500
$Comp
L CP2102N U2
U 1 1 5A7BAC78
P 3950 2650
F 0 "U2" H 3950 3450 60  0000 C CNN
F 1 "CP2102N" H 4400 1800 60  0000 C CNN
F 2 "Housings_DFN_QFN:SiliconLabs_QFN-20-1EP_3x3mm_Pitch0.5mm" H 3950 2650 60  0001 C CNN
F 3 "./doc/cp2102n-datasheet.pdf" H 3950 2650 60  0001 C CNN
	1    3950 2650
	1    0    0    -1  
$EndComp
Wire Wire Line
	8450 2400 8450 2700
Wire Wire Line
	8550 2400 8550 2700
Wire Wire Line
	8650 2400 8650 2700
Wire Wire Line
	8750 2400 8750 2700
$Sheet
S 650  5700 950  900 
U 5A7C7D4B
F0 "LCD" 60
F1 "lcd.sch" 60
$EndSheet
Wire Wire Line
	4750 2200 4950 2200
Wire Wire Line
	4750 2300 4950 2300
NoConn ~ 4750 2500
NoConn ~ 4750 2600
NoConn ~ 4750 3050
NoConn ~ 4750 3150
NoConn ~ 4750 3250
NoConn ~ 4750 1950
NoConn ~ 4750 2050
Wire Wire Line
	3700 3650 3900 3650
Connection ~ 3800 3650
Wire Wire Line
	3800 3650 3800 3700
$Comp
L GND #PWR012
U 1 1 5A7CF61E
P 3800 3700
F 0 "#PWR012" H 3800 3450 50  0001 C CNN
F 1 "GND" H 3800 3550 50  0000 C CNN
F 2 "" H 3800 3700 50  0001 C CNN
F 3 "" H 3800 3700 50  0001 C CNN
	1    3800 3700
	1    0    0    -1  
$EndComp
$Comp
L D_Schottky D1
U 1 1 5A7CF6D6
P 2900 1700
F 0 "D1" H 2900 1800 50  0000 C CNN
F 1 "BAT60A" H 2900 1600 50  0000 C CNN
F 2 "Diodes_SMD:D_SOD-323_HandSoldering" H 2900 1700 50  0001 C CNN
F 3 "" H 2900 1700 50  0001 C CNN
	1    2900 1700
	0    1    1    0   
$EndComp
Wire Wire Line
	2900 1850 2900 2350
Wire Wire Line
	2200 1950 3200 1950
Connection ~ 2900 1950
Wire Notes Line
	700  700  700  4100
Wire Notes Line
	5800 700  700  700 
Text Notes 750  4050 0    60   ~ 0
USB Power and Data Collection UART
Text Notes 1900 3550 0    30   ~ 0
Surge / Transient Protection
Wire Notes Line
	1550 2850 2700 2850
Wire Notes Line
	2700 2850 2700 3650
Wire Notes Line
	2700 3650 1550 3650
Wire Notes Line
	1550 3650 1550 2850
Text GLabel 8750 2700 3    45   Input ~ 0
COMPUTER_TXO
Text GLabel 8650 2700 3    45   Input ~ 0
COMPUTER_RXI
Text GLabel 4950 2200 2    45   Input ~ 0
COMPUTER_RXI
Text GLabel 4950 2300 2    45   Input ~ 0
COMPUTER_TXO
Text GLabel 9550 3300 3    45   Input ~ 0
SDA
Text GLabel 9450 2950 3    45   Input ~ 0
SCL
Text GLabel 8550 2700 3    45   Input ~ 0
nCCS811
Text Label 9450 2700 1    60   ~ 0
P19
Text Label 9550 2700 1    60   ~ 0
P20
$Sheet
S 650  6850 950  900 
U 5A7DC600
F0 "Sensors" 60
F1 "sensors.sch" 60
$EndSheet
Text GLabel 8450 2700 3    45   Input ~ 0
CO2_SENSOR
$Comp
L R R9
U 1 1 5A7DFB2A
P 9950 2900
F 0 "R9" V 10030 2900 50  0000 C CNN
F 1 "4.7k" V 9950 2900 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 9880 2900 50  0001 C CNN
F 3 "" H 9950 2900 50  0001 C CNN
	1    9950 2900
	0    1    1    0   
$EndComp
$Comp
L R R10
U 1 1 5A7DFBF1
P 9950 3200
F 0 "R10" V 10030 3200 50  0000 C CNN
F 1 "4.7k" V 9950 3200 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 9880 3200 50  0001 C CNN
F 3 "" H 9950 3200 50  0001 C CNN
	1    9950 3200
	0    1    1    0   
$EndComp
Wire Wire Line
	10100 2900 10100 3200
$Comp
L +3.3V #PWR013
U 1 1 5A7DFD12
P 10300 2950
F 0 "#PWR013" H 10300 2800 50  0001 C CNN
F 1 "+3.3V" H 10300 3090 50  0000 C CNN
F 2 "" H 10300 2950 50  0001 C CNN
F 3 "" H 10300 2950 50  0001 C CNN
	1    10300 2950
	1    0    0    -1  
$EndComp
Wire Wire Line
	10100 3000 10300 3000
Wire Wire Line
	10300 3000 10300 2950
Connection ~ 10100 3000
Connection ~ 9550 3200
Text Notes 3900 6750 0    60   ~ 0
Test Points
Connection ~ 9450 2900
$Comp
L PWR_FLAG #FLG014
U 1 1 5A7EC327
P 2900 1300
F 0 "#FLG014" H 2900 1375 50  0001 C CNN
F 1 "PWR_FLAG" H 2900 1450 50  0000 C CNN
F 2 "" H 2900 1300 50  0001 C CNN
F 3 "" H 2900 1300 50  0001 C CNN
	1    2900 1300
	0    1    1    0   
$EndComp
Wire Wire Line
	2900 1550 2900 1300
Wire Wire Line
	2900 1300 2800 1300
Text Notes 2750 1100 0    45   Italic 0
95mA
Wire Wire Line
	9800 3200 9550 3200
Wire Wire Line
	9800 2900 9450 2900
$Comp
L TEST_1P J15
U 1 1 5A7DDB1E
P 4500 7100
F 0 "J15" H 4500 7370 50  0000 C CNN
F 1 "PWM" H 4500 7300 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Small" H 4700 7100 50  0001 C CNN
F 3 "" H 4700 7100 50  0001 C CNN
	1    4500 7100
	1    0    0    -1  
$EndComp
$Comp
L TEST_1P J16
U 1 1 5A7DDBA5
P 4750 7100
F 0 "J16" H 4750 7370 50  0000 C CNN
F 1 "VOC" H 4750 7300 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Small" H 4950 7100 50  0001 C CNN
F 3 "" H 4950 7100 50  0001 C CNN
	1    4750 7100
	1    0    0    -1  
$EndComp
Text GLabel 4250 7100 3    45   Input ~ 0
COMPUTER_RXI
Text GLabel 4000 7100 3    45   Input ~ 0
COMPUTER_TXO
Text GLabel 4500 7100 3    45   Input ~ 0
CO2_SENSOR
Text GLabel 4750 7100 3    45   Input ~ 0
nCCS811
Wire Wire Line
	1550 2350 1550 2200
$Comp
L VBUS #PWR015
U 1 1 5A7DE3D0
P 1550 2200
F 0 "#PWR015" H 1550 2050 50  0001 C CNN
F 1 "VBUS" H 1550 2350 50  0000 C CNN
F 2 "" H 1550 2200 50  0001 C CNN
F 3 "" H 1550 2200 50  0001 C CNN
	1    1550 2200
	1    0    0    -1  
$EndComp
Wire Notes Line
	700  4100 5800 4100
Wire Notes Line
	5800 4100 5800 700 
$Comp
L TEST_1P J14
U 1 1 5A7E17FC
P 4250 7100
F 0 "J14" H 4250 7370 50  0000 C CNN
F 1 "RXI" H 4250 7300 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Small" H 4450 7100 50  0001 C CNN
F 3 "" H 4450 7100 50  0001 C CNN
	1    4250 7100
	1    0    0    -1  
$EndComp
$Comp
L TEST_1P J13
U 1 1 5A7E1802
P 4000 7100
F 0 "J13" H 4000 7370 50  0000 C CNN
F 1 "TXO" H 4000 7300 50  0000 C CNN
F 2 "Measurement_Points:Measurement_Point_Round-SMD-Pad_Small" H 4200 7100 50  0001 C CNN
F 3 "" H 4200 7100 50  0001 C CNN
	1    4000 7100
	1    0    0    -1  
$EndComp
$Comp
L Speaker_Ultrasound LS1
U 1 1 5A7EA06A
P 6950 3750
F 0 "LS1" H 6950 3550 50  0000 R CNN
F 1 "Piezo Speaker" H 7200 4000 50  0000 R CNN
F 2 "lts:Murata_PKMCS0909E4000_HandSoldering" H 6915 3700 50  0001 C CNN
F 3 "" H 6915 3700 50  0001 C CNN
	1    6950 3750
	-1   0    0    1   
$EndComp
Text Label 7550 2700 1    60   ~ 0
P08
Wire Wire Line
	7550 2400 7550 2700
Wire Wire Line
	6500 1900 6500 2700
$Comp
L GND #PWR016
U 1 1 5A7EBE65
P 7300 3750
F 0 "#PWR016" H 7300 3500 50  0001 C CNN
F 1 "GND" H 7300 3600 50  0000 C CNN
F 2 "" H 7300 3750 50  0001 C CNN
F 3 "" H 7300 3750 50  0001 C CNN
	1    7300 3750
	1    0    0    -1  
$EndComp
Wire Wire Line
	7150 3750 7300 3750
Wire Notes Line
	6450 3350 8000 3350
Text Notes 6500 3450 0    60   ~ 0
Audio
Text Notes 6750 4150 0    30   ~ 0
Multi-tone using the makecode "Music" blocks
Wire Notes Line
	6450 4150 8000 4150
Wire Notes Line
	6450 4150 6450 3350
$Comp
L Conn_01x01 J4
U 1 1 5A7ED14E
P 3050 4700
F 0 "J4" H 3050 4800 50  0000 C CNN
F 1 "P1" H 3050 4600 50  0000 C CNN
F 2 "Mounting_Holes:MountingHole_3.2mm_M3_Pad" H 3050 4700 50  0001 C CNN
F 3 "" H 3050 4700 50  0001 C CNN
	1    3050 4700
	-1   0    0    1   
$EndComp
$Comp
L Conn_01x01 J6
U 1 1 5A7ED2C6
P 3050 5200
F 0 "J6" H 3050 5300 50  0000 C CNN
F 1 "P8" H 3050 5100 50  0000 C CNN
F 2 "Mounting_Holes:MountingHole_3.2mm_M3_Pad" H 3050 5200 50  0001 C CNN
F 3 "" H 3050 5200 50  0001 C CNN
	1    3050 5200
	-1   0    0    1   
$EndComp
$Comp
L Conn_01x01 J7
U 1 1 5A7ED366
P 3050 5500
F 0 "J7" H 3050 5600 50  0000 C CNN
F 1 "GND" H 3050 5400 50  0000 C CNN
F 2 "Mounting_Holes:MountingHole_3.2mm_M3_Pad" H 3050 5500 50  0001 C CNN
F 3 "" H 3050 5500 50  0001 C CNN
	1    3050 5500
	-1   0    0    1   
$EndComp
$Comp
L Conn_01x01 J5
U 1 1 5A7ED733
P 3050 4950
F 0 "J5" H 3050 5050 50  0000 C CNN
F 1 "P2" H 3050 4850 50  0000 C CNN
F 2 "Mounting_Holes:MountingHole_3.2mm_M3_Pad" H 3050 4950 50  0001 C CNN
F 3 "" H 3050 4950 50  0001 C CNN
	1    3050 4950
	-1   0    0    1   
$EndComp
$Comp
L Conn_01x04 J3
U 1 1 5A7EDA1D
P 2350 5250
F 0 "J3" H 2350 5450 50  0000 C CNN
F 1 "I2C_5V" H 2350 4950 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x04_Pitch2.54mm" H 2350 5250 50  0001 C CNN
F 3 "" H 2350 5250 50  0001 C CNN
	1    2350 5250
	-1   0    0    1   
$EndComp
$Comp
L Conn_01x01 J8
U 1 1 5A7EDB1D
P 3050 5750
F 0 "J8" H 3050 5850 50  0000 C CNN
F 1 "3V3" H 3050 5650 50  0000 C CNN
F 2 "Mounting_Holes:MountingHole_3.2mm_M3_Pad" H 3050 5750 50  0001 C CNN
F 3 "" H 3050 5750 50  0001 C CNN
	1    3050 5750
	-1   0    0    1   
$EndComp
Wire Wire Line
	3250 4700 3400 4700
Wire Wire Line
	3250 4950 3400 4950
Wire Wire Line
	3250 5200 3400 5200
Text Label 3400 4700 0    60   ~ 0
P00
Text Label 3400 4950 0    60   ~ 0
P01
Text Label 3400 5200 0    60   ~ 0
P02
$Comp
L GND #PWR017
U 1 1 5A7EEBFF
P 3250 5500
F 0 "#PWR017" H 3250 5250 50  0001 C CNN
F 1 "GND" H 3250 5350 50  0000 C CNN
F 2 "" H 3250 5500 50  0001 C CNN
F 3 "" H 3250 5500 50  0001 C CNN
	1    3250 5500
	0    -1   -1   0   
$EndComp
$Comp
L +3.3V #PWR018
U 1 1 5A7EEC77
P 3250 5750
F 0 "#PWR018" H 3250 5600 50  0001 C CNN
F 1 "+3.3V" H 3250 5890 50  0000 C CNN
F 2 "" H 3250 5750 50  0001 C CNN
F 3 "" H 3250 5750 50  0001 C CNN
	1    3250 5750
	0    1    1    0   
$EndComp
Wire Wire Line
	2550 5050 2650 5050
$Comp
L GND #PWR019
U 1 1 5A7EFE7A
P 2650 5050
F 0 "#PWR019" H 2650 4800 50  0001 C CNN
F 1 "GND" H 2650 4900 50  0000 C CNN
F 2 "" H 2650 5050 50  0001 C CNN
F 3 "" H 2650 5050 50  0001 C CNN
	1    2650 5050
	-1   0    0    1   
$EndComp
Text GLabel 2550 5150 2    45   Input ~ 0
SCL
Text GLabel 2550 5250 2    45   Input ~ 0
SDA
$Comp
L +5V #PWR020
U 1 1 5A7F0111
P 2650 5350
F 0 "#PWR020" H 2650 5200 50  0001 C CNN
F 1 "+5V" H 2650 5490 50  0000 C CNN
F 2 "" H 2650 5350 50  0001 C CNN
F 3 "" H 2650 5350 50  0001 C CNN
	1    2650 5350
	-1   0    0    1   
$EndComp
Wire Wire Line
	2550 5350 2650 5350
Text Notes 2150 4450 0    60   ~ 0
User Expansion
Wire Notes Line
	2100 4350 3700 4350
Text Notes 7700 1050 0    60   ~ 0
LED Array Face
Wire Wire Line
	9650 1250 10150 1250
Connection ~ 10050 1250
Connection ~ 9950 1250
Connection ~ 9850 1250
Connection ~ 9750 1250
$Comp
L GND #PWR021
U 1 1 5A831740
P 9900 1250
F 0 "#PWR021" H 9900 1000 50  0001 C CNN
F 1 "GND" H 9900 1100 50  0000 C CNN
F 2 "" H 9900 1250 50  0001 C CNN
F 3 "" H 9900 1250 50  0001 C CNN
	1    9900 1250
	1    0    0    -1  
$EndComp
Connection ~ 9900 1250
Wire Wire Line
	9550 1250 9550 1550
Wire Wire Line
	9450 1250 9450 1550
Wire Wire Line
	8850 1250 9350 1250
Connection ~ 9250 1250
Connection ~ 9150 1250
Connection ~ 9050 1250
Connection ~ 8950 1250
$Comp
L +3.3V #PWR022
U 1 1 5A83174E
P 9100 1250
F 0 "#PWR022" H 9100 1100 50  0001 C CNN
F 1 "+3.3V" H 9100 1390 50  0000 C CNN
F 2 "" H 9100 1250 50  0001 C CNN
F 3 "" H 9100 1250 50  0001 C CNN
	1    9100 1250
	-1   0    0    1   
$EndComp
Connection ~ 9100 1250
NoConn ~ 10150 750 
NoConn ~ 9650 750 
NoConn ~ 9550 750 
NoConn ~ 9450 750 
NoConn ~ 9350 750 
NoConn ~ 8850 750 
NoConn ~ 8750 750 
NoConn ~ 8650 750 
NoConn ~ 8550 750 
NoConn ~ 8450 750 
NoConn ~ 7950 750 
NoConn ~ 7850 750 
NoConn ~ 7750 750 
NoConn ~ 7650 750 
NoConn ~ 7550 750 
NoConn ~ 7050 750 
NoConn ~ 6950 750 
NoConn ~ 6850 750 
NoConn ~ 6750 750 
NoConn ~ 6250 750 
Wire Wire Line
	8050 1250 8350 1250
Connection ~ 8250 1250
Connection ~ 8150 1250
Wire Wire Line
	8200 750  8200 1550
Connection ~ 8200 1250
NoConn ~ 7850 1250
NoConn ~ 7750 1250
NoConn ~ 7650 1250
Wire Wire Line
	7150 1250 7450 1250
Connection ~ 7350 1250
Connection ~ 7250 1250
Wire Wire Line
	7300 750  7300 1550
Connection ~ 7300 1250
NoConn ~ 7050 1250
NoConn ~ 6950 1250
NoConn ~ 6850 1250
NoConn ~ 6750 1250
Wire Wire Line
	6350 1250 6650 1250
Connection ~ 6550 1250
Connection ~ 6450 1250
NoConn ~ 6250 1250
Connection ~ 6500 1250
Text Label 6500 1550 1    60   ~ 0
P00
Text Label 7300 1550 1    60   ~ 0
P01
Text Label 8200 1550 1    60   ~ 0
P02
$Comp
L Conn_02x40_Row_Letter_First J19
U 1 1 5A831782
P 8150 1050
F 0 "J19" H 8200 3050 50  0000 C CNN
F 1 "Micro:bit Edge Connector" V 8200 1050 50  0000 C CNN
F 2 "lts:TE1734101-8" H 8150 1050 50  0001 C CNN
F 3 "" H 8150 1050 50  0001 C CNN
	1    8150 1050
	0    -1   -1   0   
$EndComp
Wire Wire Line
	9750 750  10050 750 
Connection ~ 9950 750 
Connection ~ 9850 750 
Wire Wire Line
	8950 750  9250 750 
Connection ~ 9150 750 
Connection ~ 9050 750 
Wire Wire Line
	7150 750  7450 750 
Connection ~ 7350 750 
Connection ~ 7250 750 
Wire Wire Line
	6350 750  6650 750 
Connection ~ 6550 750 
Connection ~ 6450 750 
Connection ~ 6500 750 
Connection ~ 7300 750 
Wire Wire Line
	9100 1250 9100 750 
Connection ~ 9100 750 
Wire Wire Line
	9900 1250 9900 750 
Connection ~ 9900 750 
Wire Wire Line
	8050 750  8350 750 
Connection ~ 8150 750 
Connection ~ 8250 750 
Connection ~ 8200 750 
NoConn ~ 7950 1250
Text Label 8750 1550 1    60   ~ 0
P16
Text Label 8650 1550 1    60   ~ 0
P15
Text Label 8550 1550 1    60   ~ 0
P14
Text Label 8450 1550 1    60   ~ 0
P13
Wire Wire Line
	8450 1250 8450 1550
Wire Wire Line
	8550 1250 8550 1550
Wire Wire Line
	8650 1250 8650 1550
Wire Wire Line
	8750 1250 8750 1550
Text Label 9450 1550 1    60   ~ 0
P19
Text Label 9550 1550 1    60   ~ 0
P20
Text Label 7550 1550 1    60   ~ 0
P08
Wire Wire Line
	7550 1250 7550 1550
Wire Wire Line
	6500 750  6500 1550
Wire Wire Line
	2150 2750 1700 2750
Wire Wire Line
	1700 2750 1700 3150
Connection ~ 2150 2750
Wire Wire Line
	2250 2800 1600 2800
Wire Wire Line
	1600 2800 1600 3250
Wire Wire Line
	1600 3250 1700 3250
Connection ~ 2250 2800
Wire Wire Line
	2200 1950 2200 1800
Connection ~ 2200 1800
NoConn ~ 4750 2700
NoConn ~ 4750 2800
$Comp
L Jumper JP1
U 1 1 5A85FC17
P 7450 3650
F 0 "JP1" H 7450 3650 50  0000 C CNN
F 1 "Buzzer Enable" H 7450 3850 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm" H 7450 3650 50  0001 C CNN
F 3 "" H 7450 3650 50  0001 C CNN
	1    7450 3650
	1    0    0    -1  
$EndComp
Wire Wire Line
	7750 3650 7950 3650
Text Label 7950 3650 2    60   ~ 0
P00
Wire Notes Line
	8000 4150 8000 3350
Wire Notes Line
	3700 4350 3700 6000
Wire Notes Line
	3700 6000 2100 6000
Wire Notes Line
	2100 6000 2100 4350
$Comp
L VBUS #PWR023
U 1 1 5A7DFE67
P 4950 5050
F 0 "#PWR023" H 4950 4900 50  0001 C CNN
F 1 "VBUS" H 4950 5200 50  0000 C CNN
F 2 "" H 4950 5050 50  0001 C CNN
F 3 "" H 4950 5050 50  0001 C CNN
	1    4950 5050
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4950 5050 5100 5050
$Comp
L D_Schottky D2
U 1 1 5A85E951
P 5250 5050
F 0 "D2" H 5250 5150 50  0000 C CNN
F 1 "BAT60A" H 5250 4950 50  0000 C CNN
F 2 "Diodes_SMD:D_SOD-323_HandSoldering" H 5250 5050 50  0001 C CNN
F 3 "" H 5250 5050 50  0001 C CNN
	1    5250 5050
	-1   0    0    1   
$EndComp
$Comp
L +5V #PWR024
U 1 1 5A8644EE
P 5550 5050
F 0 "#PWR024" H 5550 4900 50  0001 C CNN
F 1 "+5V" H 5550 5190 50  0000 C CNN
F 2 "" H 5550 5050 50  0001 C CNN
F 3 "" H 5550 5050 50  0001 C CNN
	1    5550 5050
	0    1    1    0   
$EndComp
Wire Wire Line
	5550 5050 5400 5050
$Comp
L +3.3V #PWR025
U 1 1 5A864A2C
P 6900 5200
F 0 "#PWR025" H 6900 5050 50  0001 C CNN
F 1 "+3.3V" H 6900 5340 50  0000 C CNN
F 2 "" H 6900 5200 50  0001 C CNN
F 3 "" H 6900 5200 50  0001 C CNN
	1    6900 5200
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR026
U 1 1 5A864A7C
P 6900 5300
F 0 "#PWR026" H 6900 5050 50  0001 C CNN
F 1 "GND" H 6900 5150 50  0000 C CNN
F 2 "" H 6900 5300 50  0001 C CNN
F 3 "" H 6900 5300 50  0001 C CNN
	1    6900 5300
	0    1    1    0   
$EndComp
$Comp
L +5V #PWR027
U 1 1 5A864D73
P 6900 5400
F 0 "#PWR027" H 6900 5250 50  0001 C CNN
F 1 "+5V" H 6900 5540 50  0000 C CNN
F 2 "" H 6900 5400 50  0001 C CNN
F 3 "" H 6900 5400 50  0001 C CNN
	1    6900 5400
	-1   0    0    1   
$EndComp
Wire Notes Line
	6550 4750 6550 5850
Wire Notes Line
	6550 5850 7450 5850
Wire Notes Line
	7450 5850 7450 4750
Wire Notes Line
	7450 4750 6550 4750
Text Notes 6550 4750 0    45   ~ 0
External Boost Supply
$Comp
L Conn_01x03 J2
U 1 1 5A8617CB
P 7100 5300
F 0 "J2" H 7100 5500 50  0000 C CNN
F 1 "Boost" H 7100 5100 50  0000 C CNN
F 2 "lts:CONN_01x03_Keyed" H 7100 5300 50  0001 C CNN
F 3 "" H 7100 5300 50  0001 C CNN
	1    7100 5300
	1    0    0    -1  
$EndComp
$EndSCHEMATC