4 layers65 × 30 mm
2 layers58.4 × 68.6 mm
Data logger
JWehle/data-logger1A modular board for logging analog measurements.
- Size
- 58.4 × 68.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 45
- Pads
- 314
- Tracks, vias
- 238, 19
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 Jan 2025
- Updated
- 4 Mar 2026
Overview
Data logger is an open-source printed circuit board by JWehle, from the JWehle/data-logger repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 58.4 × 68.6 mm with 36 parts on 45 nets, routed with 238 tracks and 19 vias.
It is built around the MAX31855KASA+T, DM3D-SF and SM04B-GHS-TB. Its parts include 9 connectors, 8 capacitors, 6 resistors and 3 ICs. It belongs with the sensors and measurement boards and the RP2040 boards of this library.
Main components
3
MAX31855KASA+T
SO-8-40℃~+125℃ 14 1500uA 3V~3.6V Built-in temperature sensor SPI Thermocouple-to-Digital Converter SO-8 ADCs/DACs - Special Purpose ROHSMaxim Integrated (Analog Devices)ADCs/DACs - Special Purpose
DM3D-SF
SMD-25℃~+85℃ 1.55mm Connector and Ejector MicroSD Card (TF Card) No Push-Pull SMD SD Card / Memory Card Connector ROHSHirose ElectricSD Card / Memory Card Connector
SM04B-GHS-TB
SMD,P=1.25mm,卧贴-25℃~+85℃ 1 1.25mm 1A 1x4P 4 4.13mm 4.25mm 4P 50V 8.25mm Auxiliary Solder Pin GH PA9T Phosphor bronze Surface Mount, Right Angle Tin UL94V-0 White SMD,P=1.25mm,卧贴 Wire To Board Connector ROHSJSTWire To Board Connector
README
README.mddata-logger
A modular board for logging analog measurements.
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 5016 | jannett_footprints:TestPoint_Keystone_5016_Vias | TP1, TP2, TP3, TP4, TP5 |
| 4 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C5, C8, C10, C11 |
| 4 | 2K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 4 | SM04B-GHS-TB | Connector_JST:JST_GH_SM04B-GHS-TB_1x04-1MP_P1.25mm_Horizontal | J4, J5, J6, J8 |
| 3 | 10nF | Capacitor_SMD:C_0603_1608Metric | C6, C7, C9 |
| 3 | MAX31855KASA | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3, U4, U5 |
| 3 | MPT-0,5-2-2.54 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal | J1, J2, J3 |
| 2 | 0 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R6 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C12 |
| 1 | Conn_01x04 | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J9 |
| 1 | DM3D-SF | Connector_Card:microSD_HC_Hirose_DM3D-SF | J7 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_Common_Unspecified | A1 |
Questions
How big is the Data logger PCB?
It measures 58.4 × 68.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Data logger use?
36 parts, built around the MAX31855KASA+T, DM3D-SF and SM04B-GHS-TB. 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 Data logger KiCad files?
From the JWehle/data-logger repository on GitHub, at the commit this page was made from: the board is data-logger/data-logger.kicad_pcb and its schematic data-logger/data-logger.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Data logger 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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