HardLabs

BirbMesh-One

KokoSoft·BirbMesh-One

BirbMesh-One PCB layout, top view — open source board by KokoSoft

About the BirbMesh-One PCB

BirbMesh-One is an open source PCB design by KokoSoft, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 47 × 27.7 mm, with 37 components from 27 distinct parts.

Other key parts include the MIC841N, MIC842N and MT3608B. By type, the board carries 12 resistors, 8 capacitors, 4 transistors, 3 ICs, 3 diodes and 2 connectors.

It belongs with the power & battery, rf & radio and displays & leds designs in this gallery.

From the project

Compact 1 W Meshtastic node based on the nRF52840 ProMicro. Multiple configuration options, proper power-supply design, optional LCD, battery monitoring, and support for E22(M), Ra‑01SH‑P, and HT‑RA62 radio modules. Firmware compatible with FakeTec.

The goal of Birbs Meshtastic One Watt node project was to create an inexpensive and as small as possible Meshtastic node equipped with a 1 W radio module. An important aspect, from my perspective, is ensuring favorable operating conditions for the battery to extend its lifespan. The project supports multiple configuration variants, and the final functionality depends on the components you choose to solder. The core of the design is the energy‑efficient nRF52840 controller mounted on a ProMicro board. The project is pin‑compatible with xiaoWa_pcb and FakeTec, which means no custom firmware is…

BirbMesh-One, from the project README
From the project README

Main components on the BirbMesh-One

MIC841NMIC842NMT3608B

BirbMesh-One bill of materials (BOM)

37 components, 27 distinct parts.

QtyPartRefs
1
MIC841N
U1
1
MIC842N
U2
1
MT3608B
U4
2
AO3401A
Q1, Q4
1
BSS138
Q2
1
2N7002
Q3
1
Conn_01x04_Pin
J1
1
Battery
J2
1
Reset
SW1
1
User
SW2
2
PTH
TR1, TR2
3
DSK26
D1, D2, D3
1
SMMS0650-220M
FXL0420-2R2-M
L1
1
470nF
C1
3
100nF
C2, C4, C5
2
CL10A226MQ8NRNC
22uF
C7, C9
2
CL31A107MQHNNNE
47uF
C8, C10
1
866k
R1
1
1,6M
R2
1
23,2k
R3
Show 7 more
QtyPartRefs
1
68,1k
R4
1
768k
R5
2
100k
R6, R9
1
10k
R8
2
0603WAF1502T5E
300k
R10, R13
1
300k
R11
1
39k
R12

BirbMesh-One design files

The KiCad project lives in the KokoSoft/BirbMesh-One repository on GitHub; these links point at the commit this page was built from.

BirbMesh-One: common questions

How big is the BirbMesh-One PCB?

The BirbMesh-One measures 47 × 27.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BirbMesh-One?

37 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the BirbMesh-One design files?

From the KokoSoft/BirbMesh-One repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the BirbMesh-One design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which KokoSoft chose for the repository.

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