2 layers65 × 30 mm
Rgb to hdmi
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
33 parts1kGPL-3.0
2 layers48 × 48 mm
Metstat
MRtecno98/metstat1Autonomous, unattended, solar-powered, meshed network IoT weather probe
- Size
- 48 × 48 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 75
- Pads
- 176
- Tracks, vias
- 244, 40
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Aug 2025
- Updated
- 31 Jan 2026
Overview
Metstat is an open-source printed circuit board by MRtecno98, from the MRtecno98/metstat repository on GitHub. It is a 2-layer board of 48 × 48 mm with 33 parts on 75 nets, routed with 244 tracks and 40 vias.
Its parts include 15 capacitors, 7 resistors, 6 connectors, 2 ICs and 1 switch. It belongs with the power and home automation and IoT boards and the STM32 boards of this library.
README
README.mdMetstat
A fully autonomous, unattended, solar-powered, IoT weather probe with mesh networking capabilities.
Hardware stack
| Component | Part | Notes |
|---|---|---|
| MCU | STM32L4A6AG | Low power MCU with small package size, decent connectivity and hardware acceleration for crypto algorithms |
| Power Supply | SPV1050 | Integrated energy harvester with Max Power Point Tracking. Managing intake from solar panels and LiPo storage |
TODO | TODO | TODO |
Firmware stack
Written in C++, runs on the standard STM32 HAL using CubeMX (standard runtime for STM32s).
Technical description
todo
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | R_US | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4, R5, R6, R7 |
| 5 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4, C10, C11, C12, C13 |
| 5 | 4.7uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C5, C6, C9 |
| 3 | 0.1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C14, C15 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7 |
| 1 | 22uH | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | 47uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3 |
| 1 | 48MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | Debug | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Horizontal | J6 |
| 1 | Interboard | Connector_PinSocket_2.54mm:PinSocket_2x08_P2.54mm_Vertical | J5 |
| 1 | Panel 1 | Connector_Molex:Molex_PicoBlade_53261-0271_1x02-1MP_P1.25mm_Horizontal | J1 |
| 1 | Panel 2 | Connector_Molex:Molex_PicoBlade_53261-0271_1x02-1MP_P1.25mm_Horizontal | J2 |
| 1 | Panel 3 | Connector_Molex:Molex_PicoBlade_53261-0271_1x02-1MP_P1.25mm_Horizontal | J3 |
| 1 | Panel 4 | Connector_Molex:Molex_PicoBlade_53261-0271_1x02-1MP_P1.25mm_Horizontal | J4 |
| 1 | STM32L4A6RGTx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U2 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1 |
| 1 | ~ | tclib:SPV1050 | U1 |
Questions
How big is the Metstat PCB?
It measures 48 × 48 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Metstat use?
33 parts. 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 Metstat KiCad files?
From the MRtecno98/metstat repository on GitHub, at the commit this page was made from: the board is pcb/main/main.kicad_pcb and its schematic pcb/main/interboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Metstat design in my own project?
Its repository states no licence, so its author keeps all rights: ask MRtecno98 before reusing the design.
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