Temperature Logger
measuring temperatures both indoos and outdoors
Materials
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
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Component list
R1,R2,R5,R7 = 47k
R3,R4 = 1k8
R6,R8,R9 = 10k
Capacitors:
C1,C2 = 12pF
C3 = 39pF
C4,C5 = 33nF
C6,C7,C9 = 100nF
C8 = GoldCap 1F 5.5V
Semiconductors:
D1 = Zener diode 2.7V, 400mW
D2 = low-current LED, green
D3 = low-current LED, red
D4 = 1N4148
IC1 = PIC16F676, programmed, order code 030447-41
IC2 = TC74
IC3 = 24FC512
IC4 = TCN75 or LM75
Miscellaneous:
S1 = on/off switch, 1 contact
K1 = 3.5mm jack socket, stereo, PCB mount
K2 = 4-way SIL pinheader
K3 = 4-way RJ45 socket, PCB mount
X1 = 32.768kHz quartz crystal
PCB, code 030447-1
project software, code 030447-11
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