HardLabs

MCU-Data-Logger

KhaledGhanem0·MCU-Data-Logger-PCB·kicad/MCU_Datalogger.kicad_pcb

MCU-Data-Logger PCB layout, top view — open source AVR/Arduino board by KhaledGhanem0

About the MCU-Data-Logger PCB

MCU-Data-Logger is an open source AVR/Arduino PCB design by KhaledGhanem0, published on GitHub under the MIT license. It is a 2-layer board measuring 50.8 × 30.5 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 power & battery designs in this gallery.

From the project

Battery-powered ATmega328P data logger with RTC and dual EEPROM — designed in KiCad, optimized from 4-layer to 2-layer PCB.

A compact, battery-powered data logger PCB built around the ATmega328P, designed in KiCad. The board integrates an RTC for timestamping and dual EEPROM chips for storage, with all peripherals communicating over I2C. The design was optimized from an initial 4-layer layout down to 2 layers, cutting manufacturing cost from ~$8 to ~$2 per piece without sacrificing functionality.

MCU-Data-Logger, from the project README
From the project README

Main components on the MCU-Data-Logger

24LC1025DS1337S_ATMEGA328P-AU

MCU-Data-Logger 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, J3
1
Conn_01x09_Pin
J2
1
Conn_02x03_Odd_Even
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

MCU-Data-Logger design files

The KiCad project lives in the KhaledGhanem0/MCU-Data-Logger-PCB repository on GitHub; these links point at the commit this page was built from.

MCU-Data-Logger: common questions

What microcontroller does the MCU-Data-Logger use?

The MCU-Data-Logger is built around the ATMEGA328P-AU, from the AVR/Arduino family.

How big is the MCU-Data-Logger PCB?

The MCU-Data-Logger measures 50.8 × 30.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MCU-Data-Logger?

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

Where can I download the MCU-Data-Logger design files?

From the KhaledGhanem0/MCU-Data-Logger-PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the MCU-Data-Logger design in my own project?

Yes, under the terms of its MIT license, which KhaledGhanem0 chose for the repository.

Can I test firmware for the MCU-Data-Logger 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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