2 layers50.2 × 31.2 mm
MCU Datalogger
futureshocked/KLP4e_MCU-Datalogger
This is the repository for the "MCU Datalogger" project.
31 parts138MIT
2 layers50.1 × 37.5 mm
MCU Data Logger
RTX17LEO/MCU_Data_LoggerSchematic and PCB of MCU Data Logger
- Size
- 50.1 × 37.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 33
- Pads
- 117
- Tracks, vias
- 380, 19
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 Jun 2026
- Updated
- 26 Jun 2026
Overview
MCU Data Logger is an open-source printed circuit board by RTX17LEO, from the RTX17LEO/MCU_Data_Logger repository on GitHub. It is a 2-layer board of 50.1 × 37.5 mm with 29 parts on 33 nets, routed with 380 tracks and 19 vias.
It is built around the ATMEGA328P-AU, 24LC1025-I/P and DS1337S+T&R. Its parts include 7 resistors, 5 capacitors, 4 ICs, 4 connectors and 2 diodes. It belongs with the sensors and measurement boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA328P-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
24LC1025-I/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 2.5V~5.5V 200 Years 400kHz 5ms Hardware write protection function、Noise suppression function I2C PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM
DS1337S+T&R
SOIC-8-40℃~+85℃ 1.8V~5.5V 100nA 150uA External I2C Programmable clock output、Alarm function Yes SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
README
README.mdThis is about 2 layer version of MCU Data Logger
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R2, R6 |
| 2 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C1, C4 |
| 2 | 22pF | Capacitor_SMD:C_0805_2012Metric | C2, C3 |
| 2 | 24LC1025 | 24LC1025:24LC1025 | U1, U2 |
| 2 | 330 | Resistor_SMD:R_0805_2012Metric | R5, R7 |
| 2 | 4.7k | Resistor_SMD:R_0805_2012Metric | R3, R4 |
| 2 | H1 | MountingHole:MountingHole_2.1mm | H1, H3 |
| 2 | LED | LED_SMD:LED_0805_2012Metric | D1, D2 |
| 2 | MountingHole | MountingHole:MountingHole_2.1mm | H2, H4 |
| 1 | 100nF | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 16MHz | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm_HandSoldering | Y2 |
| 1 | 32.768MHz | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm_HandSoldering | Y1 |
| 1 | ATMEGA328P-AU | ATMEGA328P-AU:QFP80P900X900X120-32N | U4 |
| 1 | Battery | Battery:BatteryHolder_Seiko_MS621F | BT1 |
| 1 | DS1337S_ | DS1337S+:DS1337S_ | U3 |
| 1 | GPIO | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Vertical | J2 |
| 1 | I2C | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | ICSP | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J4 |
| 1 | SERIAL | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
Questions
How big is the MCU Data Logger PCB?
It measures 50.1 × 37.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MCU Data Logger use?
29 parts, built around the ATMEGA328P-AU, 24LC1025-I/P and DS1337S+T&R. 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 MCU Data Logger KiCad files?
From the RTX17LEO/MCU_Data_Logger repository on GitHub, at the commit this page was made from: the board is MCU_data_logger.kicad_pcb and its schematic MCU_data_logger.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MCU Data Logger design in my own project?
Its repository states no licence, so its author keeps all rights: ask RTX17LEO before reusing the design.
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