HardLabs

NB3 Ear

NoBlackBoxes·LastBlackBox·boxes/audio/NB3_ear/NB3_ear.kicad_pcb

NB3 Ear PCB layout, top view — open source board by NoBlackBoxes

About the NB3 Ear PCB

NB3 Ear is an open source PCB design by NoBlackBoxes, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 20 × 18 mm, with 5 components from 4 distinct parts.

By type, the board carries 2 connectors, 1 microphone, 1 capacitor and 1 resistor.

It belongs with the audio designs in this gallery.

From the project

A course for brains interested in brains (not tools interested in tools)

PCB design and fabrication for NB3 ear, a stereo i2s MEMS microphone

NB3 Ear bill of materials (BOM)

5 components, 4 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
Conn_02x03_Odd_Even
J1, J2
1
Mic_ICS-43434
MK1
1
0.1 uF
C1
1
100k
R1

NB3 Ear design files

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

NB3 Ear: common questions

How big is the NB3 Ear PCB?

The NB3 Ear measures 20 × 18 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the NB3 Ear?

5 components, from 4 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 NB3 Ear design files?

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

Can I use the NB3 Ear 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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