4 layers86.6 × 85.1 mm
2 layers25.4 × 54.6 mm
Simple mesh
ondrejh/ohMeshMy take to Meshtastic networking.
- Size
- 25.4 × 54.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 41
- Pads
- 154
- Tracks, vias
- 205, 55
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 13 Mar 2025
- Updated
- 25 Aug 2026
Overview
Simple mesh is an open-source printed circuit board by ondrejh, from the ondrejh/ohMesh repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 25.4 × 54.6 mm with 23 parts on 41 nets, routed with 205 tracks and 55 vias.
It is built around the BAV99, 1N5819WS and BZV55B5V6. Its parts include 8 resistors, 7 capacitors, 4 diodes, 2 ICs and 2 connectors. It belongs with the radio and wireless boards and the RP2040 boards of this library.
Main components
3
BAV99
SOT-231 Pair Series Connection 1.25V@150mA 100V 215mA 250mW 4A 4ns 500nA@80V SOT-23 Switching Diodes ROHSNexperiaSwitching Diodes
1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky Diodes
BZV55B5V6
SOD-80-65℃~+200℃ 1 Independent 100nA@1V 25Ω 450Ω 5.49V~5.71V 5.6V 500mW SOD-80 Zener Diodes ROHSLGEZener Diodes
README
README.mdohMesh
Tady si schovávám svoje pokusy se sítí Meshtastic. Začal sem s tím někdy začátkem zimy 2024. Zatím mám 1 statickou (ohM1) a jednu mobilní (ohM2) stanici na bázi modulu Heltec V3. Pak jsem postavil ještě jednu tu mobilní pro svého kamaráda. Ta je prakticky shodná s tou mojí. Na další pokusy mám připravený další modul Heltec V3 (byl v akci) a na breadboardu stanici s Raspberry Pi Pico (ohM3).
ohM1
Statická stanice na bázi Heltec V3. Navíc má snímač prostředí BME280 a napájecí obvod aby mohla být připojená na 12V.
Zařízení je v provozu od prosince 2024. Mělo to být dočasné řešení, něco jako pokus, ale zatím jsem s tím spokojený.
ohM2
Mobilní vysílačka na bázi Heltec V3. Navíc má GPS modul, aby mohla reportovat polohu.
Víc podrobností v adresáři ohm2
ohM3
První stanice s RP2040. Zatím je ve stádiu BreadTastic Pico.
Víc podrobností v adresáři ohm3
ohM4
Node na bázi Seeed Xiao NRF52840 Kit. S ambicí nahradit žravý ohM2.
Víc podrobností v adresáři ohm4
Linky (Zatím netříděné)
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100n | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C5, C6, C7 |
| 2 | 100R | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R10, R11 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | BAV99 | Package_TO_SOT_SMD:SOT-23 | D1, D2 |
| 2 | Conn_01x04 | myLibrary:solder_term_4 | J3, J4 |
| 1 | 100 | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 1N5819WS | Diode_SMD:D_SOD-123F | D3 |
| 1 | BZV55B5V6 | Diode_SMD:D_SMB | D4 |
| 1 | NC (200k) | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_SMD_HandSolder | IC1 |
| 1 | SX1262 | myLibrary:SX1262_Core | IC2 |
Questions
How big is the Simple mesh PCB?
It measures 25.4 × 54.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Simple mesh use?
23 parts, built around the BAV99, 1N5819WS and BZV55B5V6. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Simple mesh KiCad files?
From the ondrejh/ohMesh repository on GitHub, at the commit this page was made from: the board is ohm3/hw/simple_mesh/simple_mesh.kicad_pcb and its schematic ohm3/hw/simple_mesh/simple_mesh.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Simple mesh design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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