Article
Temperature Logger
measuring temperatures both indoos and outdoors
This temperature logger is a device which continuously records two temperatures for subsequent analysis on a PC. Thanks to its I2C bus it can also easily be used with a range of other types of sensor.
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.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
PCB
Component list
Resistors:
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
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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