Schematic

GND
2
VCC
3
CTRL
1
LED1
4
LED2
6
ISET
5
LED Driver
RSET
VCC
0.1uF
LED2
CTRL
10k
VCC
CH1
VCC
GND
CH2
CTRL
QTR/QTRX/QTRXL Reflectance Sensor Arrays
©2018 Pololu Corporation
www.pololu.com
R
Schematic diagram
QTR/QTRX/QTRXL-HD-04RC
Page 4 of 6
LED1
1
2
4
3
5
1
2
CH3CH4
2.2 nF
VCC
220
CH1
2.2 nF
VCC
220
CH4
VCC
LED1
2.2 nF
VCC
220
CH3
2.2 nF
VCC
220
CH2
VCC
LED2
PIC101
PIC102
COC1
PIC201
PIC202
COC2
PIC301
PIC302
COC3
PIC401
PIC402
COC4
PIC501
PIC502
COC5
PIJP101
PIJP102
PIJP103
PIJP104
PIJP105
COJP1
PIJP201
PIJP202
COJP2
PIR101 PIR102
COR1
PIR201 PIR202
COR2
PIR301 PIR302
COR3
PIR401 PIR402
COR4
PIR501
PIR502
COR5
PIR601
PIR602
COR6
PIU101
PIU102
PIU103
PIU104
COU1
PIU201
PIU202
PIU203
PIU204
COU2
PIU301
PIU302
PIU303
PIU304
COU3
PIU401
PIU402
PIU403
PIU404
COU4
PIU501
PIU502
PIU503
PIU504 PIU505
PIU506
COU5