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OpenSoundMeter

AGordiGuerrero·OpenSoundMeter·pcb/V0.3/TFG_V0.3.kicad_pcb

OpenSoundMeter PCB layout, top view — open source board by AGordiGuerrero
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About the OpenSoundMeter PCB

OpenSoundMeter is an open source PCB design by AGordiGuerrero, published on GitHub. It is a 2-layer board measuring 98.6 × 41.3 mm, with 52 components from 33 distinct parts.

Other key parts include the TL074, WeMos_mini and AP1117-33. By type, the board carries 25 resistors, 10 capacitors, 9 connectors, 4 ICs, 3 diodes and 1 microphone.

It belongs with the iot & wireless, sensors and test & measurement designs in this gallery.

From the project

Continuous-measurement sound-level meter with Wi-Fi connectivity, to be integrated into the sensor network of the Escuela Politécnica de Cáceres

We developed a PCB for preamplification, filtering and integration of the analog input signal.

Main components on the OpenSoundMeter

TL074WeMos_miniAP1117-33

OpenSoundMeter bill of materials (BOM)

52 components, 33 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
TL074
U1, U2
1
WeMos_mini
U3
1
AP1117-33
U4
1
VCC+
J1
2
GND
J2, J3
1
VDD-
J5
1
Ajuste señal salida
J7
1
Ajuste nivel umbral
J8
1
Salida Previo
J9
2
CONN_01X08
P1, P2
1
Microphone_Condenser
MK1
3
1N4148
D1, D2, D3
1
1u
C1
1
2.2u
C2
1
2.2n
C3
2
100n
C4, C5
2
4.7n
C6, C7
1
1n
C8
2
33u
C9, C10
1
300
R1
Show 13 more
QtyPartRefs
9
1k
R2, R4, R9, R10, R12, R13, R18, R21 +1
1
2.2k
R3
2
20 k
R5, R25
1
10k
R6
1
10k
R7
1
1k
R8
1
50k
R11
1
1.5k
R14
1
6.04 k
R15
1
56.7k
R16
3
82.5 k
R17, R19, R22
1
150 k
R20
1
4k
R23

OpenSoundMeter design files

The KiCad project lives in the AGordiGuerrero/OpenSoundMeter repository on GitHub; these links point at the commit this page was built from.

OpenSoundMeter: common questions

How big is the OpenSoundMeter PCB?

The OpenSoundMeter measures 98.6 × 41.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OpenSoundMeter?

52 components, from 33 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the OpenSoundMeter design files?

From the AGordiGuerrero/OpenSoundMeter repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the OpenSoundMeter design in my own project?

The repository has no license, so all rights stay with AGordiGuerrero. Use it as a reference, and ask the author before reusing the design.

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