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Basement Ventilation System (1)

Humidity control with Platino

Basement Ventilation System (1)
Moisture is often a problem in basements. This is frequently a consequence of condensation due to the low temperatures in basements, which are usually unheated. It frequently leads to unpleasant odors from fungal growth and damage to stored items from corrosion and wood rot, all of which are undesirable. Good ventilation can go a long way toward eliminating or reducing these problems.
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Extra info / Update
Two ChipCap2 sensors for measuring relative humidity (2% accuracy) and temperature (within ±0.6°C)
4-line by 20-character LCD
Supply voltage: 8–12 V DC
Software runs on ATmega328 microcontroller (Arduino compatible)
Rotary encoder with integrated pushbutton for user interface
Controls electric window opener
Controls fan or dehumidifier
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The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.
Component list
Platino Component List
Default: 5% .25W
R2,R3 = 47Ohm
R5,R6,R7,R10,R12 = 10kOhm
R11 = 4.7kOhm
R13 = 100Ohm
R5 = 3.3kOhm
P1 = 10kOhm trimpot
C1,C2 = 22pF ceramic
C3,C5,C6 = 100nF
C4 = 10nF
C8 = 1µF 50V radial, 2.5mm pitch
C9 = 10µF 50V radial, 2.5mm pitch
L1 = 10µH or wire jumper
D2 = 1N5817 Schottky diode
T1 = BC547
IC2 = ATmega328, programmed with Arduino-bootloader, Elektor Store # 100892-41)
IC3 = 7805
LCD1 = 4x20 character alphanumerical LCD with backlight (e.g. Midas MC4200B6W-SPR
X1 = 16MHz quartz crystal
S6 = rotary encoder with pushbutton, Alps EC12E2424407
BUZ1 = 12mm AC buzzer ABT-410-RC
Platino board, Elektor Store # 100892-1
2 pcs CC2-eBoB, Elektor Store # 140154-91

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