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Pmg

0x007E·pmg·pcb/PMG.kicad_pcb

Pmg PCB layout, top view — open source board by 0x007E

About the Pmg PCB

Pmg is an open source PCB design by 0x007E, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 81.3 × 40.6 mm, with 56 components from 14 distinct parts.

By type, the board carries 23 resistors, 15 diodes, 10 transistors, 6 capacitors, 1 connector and 1 microphone.

It belongs with the audio designs in this gallery.

From the project

Level meter for recording acoustic signals

The pmg project is based on a pcb with an elektret microphone signal transistor (BC547) amplifier and a transistor stage for level signalization.

There are two parts of the hardware. The pcb and the housing of the PMG. The pcb is created with KiCAD and the housing with FreeCAD. All files are built with github actions so that they are ready for a production environment. The housing is printed with a 3D-printer (Dremel 3D40).

Pmg, from the project README
From the project README

Pmg bill of materials (BOM)

56 components, 14 distinct parts.

QtyPartRefs
10
BC547
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +2
1
Conn_01x02_Pin
J3
1
Electret
MK1
7
LED
D1, D2, D3, D4, D5, D6, D7
8
1N4148
D8, D9, D10, D11, D12, D13, D14, D15
1
47u
C1
4
1u
C2, C3, C4, C5
1
100n
C6
8
680
R1, R2, R3, R4, R5, R6, R7, R23
10
10k
R8, R9, R10, R11, R12, R13, R14, R15 +2
2
1M
R17, R21
1
39k
R18
1
10M
R19
1
470
R22

Pmg design files

The KiCad project lives in the 0x007E/pmg repository on GitHub; these links point at the commit this page was built from.

Pmg: common questions

How big is the Pmg PCB?

The Pmg measures 81.3 × 40.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pmg?

56 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pmg design files?

From the 0x007E/pmg repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Pmg design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

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