4 layers67.4 × 89.9 mm
Bornhack-2026-hardware
badge-gallery/bornhack-2026-hardware
Source-preserving mirror of https://codeberg.org/Ranzbak/bornhack2026-hardware
193 partsMIT
4 layers41.4 × 108 mm
Make the worlds strongest Node
- Size
- 41.4 × 108 mm
- Copper layers
- 4
- Thickness
- 1 mm
- Parts
- 223
- Nets
- 226
- Pads
- 1,003
- Tracks, vias
- 1,859, 865
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 Jan 2026
- Updated
- 20 Oct 2026
Overview
Mesh3310 is an open-source printed circuit board by JLTelectronics, from the JLTelectronics/The-Mesh3310-Project repository on GitHub, published under the MIT licence. It is a 4-layer board of 41.4 × 108 mm with 223 parts on 226 nets, routed with 1,859 tracks and 865 vias.
It is built around the BQ24074RGTR, 1N4148WS and A-IPEX1-1.25A, with the AO3400A, BSS138 and 0868AT43A0020E among its other parts. Its parts include 74 capacitors, 51 resistors, 15 switches, 13 diodes and 12 inductors.
Main components
9
BQ24074RGTR
QFN-16-EP(3x3)-40℃~+125℃ 1 1.5A 4.2V 4.35V~10.2V 6.5uA Charging IC Lithium Battery Not supported Support QFN-16-EP(3x3) Battery Management ROHSTexas InstrumentsBattery Management
1N4148WS
SOD-3231.25V@150mA 100V 150mA 1uA@75V 200mW 2A 4ns Independent SOD-323 Switching Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Switching Diodes
A-IPEX1-1.25A
SMD1 1.25mm 2mm 50Ω 6GHz Board Side IPEX Inner pin SMD Coaxial Connectors (RF) ROHSMyAntennaCoaxial Connectors (RF)
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsBSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
0868AT43A0020E
SMD-40℃~+85℃ 0.8mm 1dBi 20MHz 2mm 3W 50Ω 7mm 868MHz SMA SMD,7x2mm Antennas ROHSJohanson DielectricsAntennas
2450AT42E0100001E
--2dBi 2.4GHz 2W - Antennas ROHSJohanson DielectricsAntennasBAT60A
SOD-323Schottky DiodesSlkorBC847
SOT-231 NPN 100MHz 100mA 100nA 110 200mW 45V 500mV 6V NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)
README
README.mdThe-Mesh3310-Project
Make the world's strongest node.
📱 Mesh3310: The Ultimate Off-Grid Communicator
Mesh3310 is an open-source hardware project that revives the legendary Nokia 3310 (Classic). It replaces the obsolete 2G internals with a modern, high-performance PCB.
The goal is to turn this indestructible icon into a rugged, long-range mesh networking node that runs Meshtastic and MeshCore.
🚀 The Vision
The Nokia 3310 is famous for its durability, tactile keypad and ergonomic design. Our custom board drops straight into the original housing and gives the phone a second life as a decentralized communicator that does not rely on cell towers or the internet. When a network is available, the built-in LTE modem can connect the mesh to the rest of the world.
⚡ Key Specifications
| Function | Part |
|---|---|
| MCU | Nordic nRF52840 (Cortex-M4F, Bluetooth LE, USB) |
| LoRa | Semtech SX1262 (22 dBm), 868 MHz chip antenna in the original antenna area; optional U.FL assembly variant for an external antenna |
| Cellular / GNSS | Nordic nRF9151 (LTE-M / NB-IoT, DECT NR+, GNSS) with a SKY65723 GNSS LNA; antennas via U.FL |
| Bluetooth antenna | On-board 2.4 GHz chip antenna |
| Power | TI BQ24074 charger + TPS63031 buck-boost, original 3310 battery contacts |
| Charging / USB | Through the original bottom connector (USB data to the nRF52840) |
| Display / input | Original PCD8544 monochrome LCD, full keypad with backlight, side power button (short press to firmware, 7.5 s hardware power-off via TPS3420) |
| Audio | MAX98357A amplifier for the speaker, microphone, buzzer and vibration motor contacts |
| Storage | 2 × 16 Mbit flash (MX25R1635F), one for each Nordic chip |
| Firmware | Built to run Meshtastic and MeshCore |
🛠 Project Status: Rev. G – first prototypes being ordered 🏗️
- The schematic is complete and passes ERC.
- The 4-layer PCB (1.0 mm, so it fits the original housing; JLCPCB 4-layer stackup with 3313 prepreg) is fully routed, passes DRC and matches the schematic.
- Board outline, mounting holes, battery contacts, display, SIM, speakers, keypad and backlight LEDs match the original Nokia 3310 housing.
- Controlled-impedance RF lines (50 Ω) and a solid ground plane under all three radios.
- Every assembled part has an LCSC part number, ready for JLCPCB assembly.
Next steps: the first 2 assembled prototypes are being ordered at JLCPCB (waiting for the nRF9151 via global sourcing). After that: tune the RF matching networks (LoRa chip antenna first) and start firmware bring-up.
| Top | Bottom (keypad side) |
|---|---|
 |  |
📂 Repository Layout
| Folder | Contents |
|---|---|
Kicad_Mesh3310/ | KiCad 9 project (schematic, PCB, libraries, 3D models) |
Kicad_Mesh3310/datasheets/ | Datasheets of the main components |
productie/ | Gerbers, drill files, BOM and pick-and-place files, plus manufacturing notes (Dutch). Upload Mesh3310-JLC-stuklijst.csv and Mesh3310-JLC-positie.csv to JLCPCB. |
productie/variant-UFL/ | Assembly variant with LoRa on a U.FL connector instead of the chip antenna (same gerbers) |
afbeeldingen/ | Renders of the board |
🤝 How You Can Help
We are actively looking for contributors. Your input can directly shape the hardware.
- Hardware engineering: review the schematic and layout, and help with RF tuning.
- Firmware development: port Meshtastic/MeshCore to the legacy LCD and keypad matrix.
- Mechanical design: check the fit in original and replacement shells, and design internal 3D-printed parts.
💬 Community & Contributing
Most of the coordination happens on Discord.
Join our Discord: https://discord.gg/E6Sk9hmUE
Concept images
License
MIT
Parts
223| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | ~ | mesh3310_footprints:3310_key | SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW17 |
| 8 | 100k | Resistor_SMD:R_0201_0603Metric | R14, R15, R17, R20, R37, R64, R65, R66 |
| 8 | 150R | Resistor_SMD:R_0201_0603Metric | R19, R21, R22, R23, R24, R25, R26, R27 |
| 8 | RED | mesh3310_footprints:3310_led | D5, D6, D7, D9, D10, D11, D12, D13 |
| 7 | 100nF | Capacitor_SMD:C_0201_0603Metric | C1, C13, C34, C41, C48, C58, C69 |
| 7 | 10k | Resistor_SMD:R_0201_0603Metric | R7, R11, R12, R30, R49, R50, R55 |
| 7 | ~ | mesh3310_footprints:2mm_mounting_hole_sig | H1, H2, H3, H4, H5, H6, H7 |
| 6 | 0 | Resistor_SMD:R_0201_0603Metric | R3, R10, R28, R38, R57, R58 |
| 6 | 0.1u | Capacitor_SMD:C_0201_0603Metric | C2, C4, C10, C12, C33, C43 |
| 6 | 100n | Capacitor_SMD:C_0201_0603Metric | C5, C14, C18, C21, C27, C101 |
| 6 | 47k | Resistor_SMD:R_0201_0603Metric | R18, R31, R32, R33, R34, R35 |
| 5 | 2.2uF | Capacitor_SMD:C_0402_1005Metric | C35, C37, C39, C40, C50 |
| 4 | 10uF/10V | Capacitor_SMD:C_0603_1608Metric | C16, C20, C91, C92 |
| 4 | 1M | Resistor_SMD:R_0201_0603Metric | R36, R59, R60, R62 |
| 4 | 1N4148WS | Diode_SMD:D_SOD-323 | D4, D8, D18, D20 |
| 4 | 1k | Resistor_SMD:R_0201_0603Metric | R4, R13, R29, R52 |
| 2 | 1.8pF | Capacitor_SMD:C_0201_0603Metric | C75, C84 |
| 2 | 100 | Resistor_SMD:R_0201_0603Metric | R44, R45 |
| 2 | 100pF | Capacitor_SMD:C_0201_0603Metric | C45, C49 |
| 2 | 10pF | Capacitor_SMD:C_0201_0603Metric | C70, C71 |
| 2 | 12pF | Capacitor_SMD:C_0201_0603Metric | C31, C32 |
| 2 | 15nH | Inductor_SMD:L_0201_0603Metric | L6, L13 |
| 2 | 15p | Capacitor_SMD:C_0201_0603Metric | C11, C26 |
| 2 | 15pF | Capacitor_SMD:C_0201_0603Metric | C22, C29 |
| 2 | 1nF | Capacitor_SMD:C_0201_0603Metric | C85, C86 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C36, C100 |
| 2 | 22uF/10V | Capacitor_SMD:C_0805_2012Metric | C6, C7 |
| 2 | 3.6pF | Capacitor_SMD:C_0201_0603Metric | C87, C88 |
| 2 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C3, C8 |
| 2 | 47nF | Capacitor_SMD:C_0201_0603Metric | C38, C76 |
| 2 | 47uF/6.3V | Capacitor_SMD:C_0805_2012Metric | C28, C99 |
| 2 | A-IPEX1-1.25A | mesh3310_footprints:IPEX-SMD_3P-L2.6-W2.6-LS3.0_RF1200001R | RF3, RF4 |
| 2 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q4, Q7 |
| 2 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q5, Q8 |
| 2 | NC | Capacitor_SMD:C_0201_0603Metric | C79, C80 |
| 2 | NC (afstemmen) | Capacitor_SMD:C_0201_0603Metric | C93, C94 |
| 2 | S201632M10PF10PPM 32MHz | mesh3310_footprints:CRYSTAL-SMD_4P-L2.0-W1.6-BL | X1, X2 |
| 1 | "OK" | mesh3310_footprints:3310_key | SW2 |
| 1 | 0 | Inductor_SMD:L_0201_0603Metric | L15 |
| 1 | 0868AT43A0020E | mesh3310_footprints:XCVR_0868AT43A0020E | ANT1 |
| 1 | 0R | Resistor_SMD:R_0201_0603Metric | R61 |
| 1 | 1.5nH | Inductor_SMD:L_0201_0603Metric | L4 |
| 1 | 1.8k | Resistor_SMD:R_0201_0603Metric | R5 |
| 1 | 10u | Capacitor_SMD:C_0402_1005Metric | C95 |
| 1 | 10uH | Inductor_SMD:L_0603_1608Metric | L5 |
| 1 | 120R@100MHz 1A | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | 15uH | Inductor_SMD:L_0603_1608Metric | L3 |
| 1 | 1u5 | Inductor_SMD:L_1210_3225Metric | L2 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C9 |
| 1 | 1uF/25V | Capacitor_SMD:C_0603_1608Metric | C89 |
| 1 | 2.0pF | Capacitor_SMD:C_0201_0603Metric | C30 |
| 1 | 2.2k | Resistor_SMD:R_0201_0603Metric | R9 |
| 1 | 2.4pF | Capacitor_SMD:C_0201_0603Metric | C78 |
| 1 | 2.5nH | Inductor_SMD:L_0201_0603Metric | L17 |
| 1 | 22uF/6.3V | Capacitor_SMD:C_0603_1608Metric | C17 |
| 1 | 2450AT42E0100001E | mesh3310_footprints:2450AT42E0100001E | ANT2 |
| 1 | 3.3nH | Inductor_SMD:L_0201_0603Metric | L1 |
| 1 | 3.3pF | Capacitor_SMD:C_0201_0603Metric | C81 |
| 1 | 32.768KHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | X4 |
| 1 | 330k | Resistor_SMD:R_0201_0603Metric | R51 |
| 1 | 33R | Resistor_SMD:R_0201_0603Metric | R8 |
| 1 | 33pF | Capacitor_SMD:C_0201_0603Metric | C15 |
| 1 | 39pF | Capacitor_SMD:C_0201_0603Metric | C83 |
| 1 | 4.7nH | Inductor_SMD:L_0201_0603Metric | L18 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C47 |
| 1 | 4.7uF/10V | Capacitor_SMD:C_0603_1608Metric | C90 |
| 1 | 470nF | Capacitor_SMD:C_0201_0603Metric | C19 |
| 1 | 47nH | Inductor_SMD:L_0402_1005Metric | L16 |
| 1 | 47pF | Capacitor_SMD:C_0201_0603Metric | C77 |
| 1 | 5.6pF | Capacitor_SMD:C_0201_0603Metric | C82 |
| 1 | 56R | Resistor_SMD:R_0201_0603Metric | R16 |
| 1 | 56pF | Capacitor_SMD:C_0201_0603Metric | C96 |
| 1 | 8.2nH | Inductor_SMD:L_0201_0603Metric | L19 |
| 1 | 820pF | Capacitor_SMD:C_0201_0603Metric | C46 |
| 1 | BAT60A | Diode_SMD:D_SOD-323 | D17 |
| 1 | BC847 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BQ24074RGT | Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U3 |
| 1 | Battery | mesh3310_footprints:3310_batt | J9 |
| 1 | Buzzer pad | mesh3310_footprints:3310_buzzer | J6 |
| 1 | Conn_01x05_Pin | mesh3310_footprints:3310_dc | J4 |
The 189 most common of 223 parts.
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Questions
How big is the Mesh3310 PCB?
It measures 41.4 × 108 mm and has 4 copper layers, 1 mm thick.
What parts does the Mesh3310 use?
223 parts, built around the BQ24074RGTR, 1N4148WS, A-IPEX1-1.25A and AO3400A. 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 Mesh3310 KiCad files?
From the JLTelectronics/The-Mesh3310-Project repository on GitHub, at the commit this page was made from: the board is Kicad_Mesh3310/Mesh3310.kicad_pcb and its schematic Kicad_Mesh3310/Mesh3310.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mesh3310 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).