Multichannel Temperature Logger
Gerber file
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Component list
Resistors
R1,R2,R21,R28,R29,R30,R31,R32,R33 = 10kOhm 5% 125mW
R3,R4,R5,R6,R7,R8,R13,R14 = 100Ohm 5% 125mW
R9,R10,R11,R12 = 8.2kOhm 5% 125mW
R15,R16,R17,R22,R23,R24,R25,R26 = 1kOhm 5% 125mW
R18,R19 = 1.5Ohm 5% 100mW
R20 = 18kOhm 5% 125mW
R27 = 56kOhm 5% 125mW
Capacitors
(SMD 0805)
C1,C2,C3,C6,C7 = 100nF 50V 20%
C4 = 1µF 16V electrolytic
C5 = 470nF 25V
C8,C9 = 22pF 50V 5%
C10 = 10µF
C11 = 22µF 10V electrolytic
Semiconductors
D1,D2 = LED, 3mm, low current
T1 = BC850, NPN 45V transistor, SOT-23
IC1 = DS1338Z33+, real time clock, SOIC8
IC2 = PIC18F4520-I/PT, 8-bit MCU, programmed, Elektor Store # 120637-41
IC3 = AP1117E33G, LDO regulator, 3.3V, SOT223
IC4,IC5,IC6,IC7,IC8,IC9 = DS18S20, 1-Wire temperature sensor, TO92 (not on board)
Miscellaneous
Kb1 = MCAK1604NBWB, keypad, 4x4 array, Multicomp
X1 = 32.768kHz quartz crystal, 12.5pF load, 20ppm, 4.1x1.5mm, Abracon ABS09-32.768KHZ-T
X2 = 8MHz quartz crystal, 18pF load, 20ppm, 5x3.2mm, Abracon ABM3-8.000MHZ-D2Y-T
Card1 = uSD (micro SD) connector, Hirose DM3AT-SF-PEJM5(40)
BT1 = CR2032, with PCB mount holder
LCD1 = DOGM162W-A 2x16 character LCD
Backlight EA LED55x31-G
K1 = 6-pin pinheader, right angled, 0.1’’ pitch
K2 = 2-pin pinheader, right angled, 0.1’’ pitch
K3,K4,K5,K6,K7,K8 = 3-pin pinheader or socket, right angled, 0.1’’ pitch
Socket strip 0.1’’ pitch, turned pins, for mounting LCD and keypad
PCB # 120637
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