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.
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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.
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.
R1 = 1kΩ 10kΩ
R5-R11,R13-R19,R21-R27,R29-R35 = 43Ω *
R12,R20,R28,R36 = 680Ω *
C1 = 100µF, 25V, radial, 2.5mm lead pitch
C2 = 330nF, 50V, X7R 0805 *
C3,C6,C7 = 100nF, 50 V, X7R 0805*
C4,C5 = 1µF 50V, X7R 0805
LD1-LD4 = SA40-19SRWA, Kingbright, e.g. Reichelt SA40-19RT *
IC2 = ULN2803A, SOIC18-W
ESP32 Pico Kit, Espressif [1]
PCB-mount power barrel socket, straight or right-angled. (Würth 694108402002 or 694108301002) *
2x20-way pinheader sockets for ESP32, SIL, 0.1“ pitch
K1 = 2-pin pinheader, 0.1“ pitch
K2 = 6-pin pinheader, SIL, 0.1“ pitch
K3,K4,K5,K11 = 4-pin pinheader, SIL, 0.1“ pitch
PCB # 180254-1 v1.2 (Elektor Store)
C1 = 100nF, 50V, ceramic, radial, 5mm pitch
LED1,LED2,LED3 = red, 3mm diam.
Sensor module DHT22, Air temperature and humidity *
Buz1 = piezo buzzer, e.g. PS1420P02CT, TDK
K1,K2 = 20-way pinheader socket strip for ESP32, SIL, 0.1“ pitch
K3= 3-pin pinheader, right-angled, 0.1“ pitch
S1 = pushbutton, SMD, e.g. S-TACTILE-6X6-PTH, Alps
PCB # 170182-1 v1.1 (Elektor Store)
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