HardLabs

DataLogger-Board

DevMajed·DataLogger-Board

DataLogger-Board layout, top view — open source AVR/Arduino board by DevMajed

About the DataLogger-Board

DataLogger-Board is an open source AVR/Arduino PCB design by DevMajed, published on GitHub. It is a 4-layer board measuring 50.8 × 35.6 mm, with 25 components from 16 distinct parts.

Its main chip is the ATMega328P-AU, from the AVR/Arduino family. Other key parts include the 24LC1025 and DS1337S_. By type, the board carries 7 resistors, 5 capacitors, 4 ICs, 4 connectors, 2 crystals and 2 diodes.

It belongs with the sensors designs in this gallery.

From the project

Hardware PCB Design for AVR-based Datalogger using KiCAD

Custom ATmega328-AU data-logging PCB with external EEPROM, real-time clock, UART, I²C, ICSP, and expansion GPIO.

This project is a standalone embedded data-logging board designed around the ATmega328-AU. It combines nonvolatile storage, accurate timekeeping, programming access, serial communication, and general-purpose expansion on a custom PCB.

- Dedicated external EEPROM for data retention - Hardware RTC for timestamped records - Separate crystal domains for MCU and RTC timing - UART and I²C brought out for external integration - ICSP header for direct programming - Custom PCB with…

Main components on the DataLogger-Board

24LC1025DS1337S_ATMega328P-AU

DataLogger-Board bill of materials (BOM)

25 components, 16 distinct parts.

QtyPartRefs
2
24LC1025
U1, U3
1
DS1337S_
U2
1
ATMega328P-AU
U4
1
32.768 KHz
Y1
1
16 MHz
Y2
2
Conn_01x04_Pin
J1, J2
1
Conn_02x03_Odd_Even
J3
1
Conn_01x09_Pin
J4
1
Battery
BT1
2
LED
D1, D2
2
0.1uF
C1, C4
2
22pF
C2, C3
1
100nF
C5
3
10K
R1, R2, R6
2
4.7K
R3, R4
2
330
R5, R7

DataLogger-Board design files

The KiCad project lives in the DevMajed/DataLogger-Board repository on GitHub; these links point at the commit this page was built from.

DataLogger-Board: common questions

What microcontroller does the DataLogger-Board use?

The DataLogger-Board is built around the ATMega328P-AU, from the AVR/Arduino family.

How big is the DataLogger-Board?

The DataLogger-Board measures 50.8 × 35.6 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the DataLogger-Board?

25 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the DataLogger-Board design files?

From the DevMajed/DataLogger-Board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the DataLogger-Board design in my own project?

The repository has no license, so all rights stay with DevMajed. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the DataLogger-Board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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