4 layers89 × 57 mm
2 layers100 × 55 mm
Punos link
akheron/punosPunos-link publishes data from punos devices to MQTT over Ethernet.
- Size
- 100 × 55 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 100
- Nets
- 107
- Pads
- 360
- Tracks, vias
- 571, 362
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 30 Aug 2026
- Updated
- 31 Oct 2026
Overview
Punos link is an open-source printed circuit board by akheron, from the akheron/punos repository on GitHub. It is a 2-layer board of 100 × 55 mm with 100 parts on 107 nets, routed with 571 tracks and 362 vias.
It is built around the CC1101RGP, TPAP2125K-3.3TRG1 and W5500, with the AO3401A, HR913550A and MF-MSMF075/24-2 among its other parts. Its parts include 47 capacitors, 22 resistors, 8 inductors, 5 ICs and 5 connectors. It belongs with the STM32 boards of this library.
Main components
6
CC1101RGP
QFN-20-EP(4x4)-116dBm -40℃~+85℃ 1.8V~3.6V 12.3mA 12dBm 14.3mA 600Kbps ISM SPI QFN-20-EP(4x4) RF Transceiver ICs ROHSTexas InstrumentsRF Transceiver ICs
TPAP2125K-3.3TRG1
SOT-23-5SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICUncategorised
W5500
LQFP-48_7x7-40℃~+85℃ 10BASE-T、100BASE-TX 3.3V 32KB SPI SPI Wake-up function、Programmable LED indication、Low-power mode Yes LQFP-48(7x7) Ethernet Controllers ROHSWIZNETEthernet Controllers
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
HR913550A
插件0℃~+85℃ 1 Gold Non-PoE Phosphor bronze RJ45 Jack Right Angle Shielded With Cross Pin With LED 插件 Ethernet Connectors / Modular Connectors (RJ45 RJ11) ROHSHANRUNEthernet Connectors / Modular Connectors (RJ45 RJ11)
MF-MSMF075/24-2
1812-40℃~+85℃ 110mΩ 24V 3.2mm 40A 450mΩ 5.4mm 800mW 1812 Resettable Fuses ROHSBournsResettable Fuses
README
hardware/punos-link/README.mdpunos-link
Punos-link publishes data from punos devices to MQTT over Ethernet.
Features:
- MCU: STM32G071
- Connectivity: TI CC1101 + 868 MHz trace antenna
- Ethernet: WizNet W5500, Hanrun HR911105A
- External flash: 512 KB SPI NOR (for firmware updates over Ethernet)
- Power: 5V / 300 mA
KiCanvas:
License: CERN-OHL-P, except CC BY-SA for files in lib/3dmodels/.
Parts
100| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C5, C10, C12, C13, C21, C22, C23, C24, C26, C27 |
| 7 | 100nF | Capacitor_SMD:C_0402_1005Metric | C41, C51, C91, C111, C141, C151, C181 |
| 5 | 10K | Resistor_SMD:R_0603_1608Metric | R16, R19, R20, R21, R23 |
| 5 | 10nF | Capacitor_SMD:C_0603_1608Metric | C2, C15, C16, C17, C18 |
| 4 | 0R | Resistor_SMD:R_0603_1608Metric | R3, R4, R5, R6 |
| 4 | 12nH | Inductor_SMD:L_0402_1005Metric | L121, L123, L124, L131 |
| 4 | 15pF | Capacitor_SMD:C_0402_1005Metric | C3, C6, C81, C101 |
| 4 | 49R9 1% | Resistor_SMD:R_0603_1608Metric | R7, R8, R10, R11 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C9, C11, C14 |
| 3 | 1uF | Capacitor_SMD:C_0603_1608Metric | C20, C44, C191 |
| 2 | 1.5pF | Capacitor_SMD:C_0402_1005Metric | C122, C131 |
| 2 | 18nH | Inductor_SMD:L_0402_1005Metric | L122, L132 |
| 2 | 330R | Resistor_SMD:R_0603_1608Metric | R12, R13 |
| 2 | 33R | Resistor_SMD:R_0603_1608Metric | R17, R18 |
| 2 | 8.2pF | Capacitor_SMD:C_0402_1005Metric | C34, C35 |
| 2 | BLM18KG601SN1D | Inductor_SMD:L_0603_1608Metric | FB1, FB191 |
| 2 | C | Capacitor_SMD:C_0402_1005Metric | C7, C8 |
| 1 | 0R | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 0R | Inductor_SMD:L_0402_1005Metric | L2 |
| 1 | 1.0pF | Capacitor_SMD:C_0402_1005Metric | C121 |
| 1 | 100pF | Capacitor_SMD:C_0402_1005Metric | C124 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C38 |
| 1 | 10R 1% | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 12K4 1% | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 12pF | Capacitor_SMD:C_0402_1005Metric | C125 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 1nF / 2kV | Capacitor_SMD:C_1808_4520Metric | C19 |
| 1 | 25MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | 26MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 3.3nH | Inductor_SMD:L_0402_1005Metric | L125 |
| 1 | 3.3pF | Capacitor_SMD:C_0402_1005Metric | C123 |
| 1 | 32.768 kHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y3 |
| 1 | 4.7uF 10V | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 47pF | Capacitor_SMD:C_0402_1005Metric | C126 |
| 1 | 56K | Resistor_SMD:R_0603_1608Metric | R171 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q4 |
| 1 | Barrel_Jack | project:TLZWLA-DC-005 | J8 |
| 1 | CC1101 | project:Texas_RGP0020H_VQFN-20-1EP_4x4mm_P0.5mm_EP2.4x2.4mm | U5 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_2x01_P2.54mm_Vertical | J6 |
| 1 | Conn_02x04 | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J2 |
| 1 | HR913550A | Connector_RJ:RJ45_Hanrun_HR911105A_Horizontal | J1 |
| 1 | MF-MSMF075/24-2 | Fuse:Fuse_1812_4532Metric | F1 |
| 1 | STM32G071CBUx | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U3 |
| 1 | TPAP2125K-3.3TRG1 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D2.5mm | TP1 |
| 1 | U.FL | project:BAT-WIRELESS-BWU.FL-IPEX1 | J3 |
| 1 | W5500 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | ZD25WD40C | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
The 95 most common of 100 parts.
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Questions
How big is the Punos link PCB?
It measures 100 × 55 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Punos link use?
100 parts, built around the CC1101RGP, TPAP2125K-3.3TRG1, W5500 and AO3401A. 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 Punos link KiCad files?
From the akheron/punos repository on GitHub, at the commit this page was made from: the board is hardware/punos-link/punos-link.kicad_pcb and its schematic hardware/punos-link/punos-link.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Punos link design in my own project?
Its repository states no licence, so its author keeps all rights: ask akheron before reusing the design.