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ATmega328p microcontroller board

Abhi90808·ATmega328p_microcontroller_board

ATmega328p microcontroller board layout, top view — open source AVR/Arduino board by Abhi90808

About the ATmega328p microcontroller board

ATmega328p microcontroller board is an open source AVR/Arduino PCB design by Abhi90808, published on GitHub. It is a 2-layer board measuring 50.7 × 21.5 mm, with 26 components from 17 distinct parts.

Its main chip is the ATmega328-P, from the AVR/Arduino family. Other key parts include the CH340G and AMS1117-5.0. By type, the board carries 11 capacitors, 4 connectors, 4 resistors, 3 ICs, 2 crystals and 1 fuse.

It belongs with the usb & debug tools and dev boards & breakouts designs in this gallery.

From the project

This project is a ground-up recreation of the Arduino Nano form factor using the ATmega328P microcontroller. Rather than using a pre-made module, the entire hardware stack was designed from scratch: oscillator circuit, decoupling strategy, USB-to-serial bridge for bootloader prog

This project is a ground-up recreation of the Arduino Nano form factor using the ATmega328P microcontroller. Rather than using a pre-made module, the entire hardware stack was designed from scratch: oscillator circuit, decoupling strategy, USB-to-serial bridge for bootloader programming, voltage regulation, and pin breakout — all laid out in a compact 2-layer PCB.

Main components on the ATmega328p microcontroller board

CH340GAMS1117-5.0ATmega328-P

ATmega328p microcontroller board bill of materials (BOM)

26 components, 17 distinct parts.

QtyPartRefs
1
CH340G
U1
1
AMS1117-5.0
U2
1
ATmega328-P
U4
1
12MHZ
Y1
1
16MHZ
Y2
2
Conn_01x15_Pin
J1, J2
1
Conn_01x06_Pin
J3
1
USB_C_Plug_USB2.0
P1
1
500mA
F1
1
SW_Push
SW1
2
12pF
C1, C2
2
10uf
C3, C4
5
100nF
C5, C9, C10, C11, C12
2
22pF
C6, C7
2
5.1k
R1, R2
1
22
R3
1
10K
R4

ATmega328p microcontroller board design files

The KiCad project lives in the Abhi90808/ATmega328p_microcontroller_board repository on GitHub; these links point at the commit this page was built from.

ATmega328p microcontroller board: common questions

What microcontroller does the ATmega328p microcontroller board use?

The ATmega328p microcontroller board is built around the ATmega328-P, from the AVR/Arduino family.

How big is the ATmega328p microcontroller board?

The ATmega328p microcontroller board measures 50.7 × 21.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ATmega328p microcontroller board?

26 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the ATmega328p microcontroller board design files?

From the Abhi90808/ATmega328p_microcontroller_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 ATmega328p microcontroller board design in my own project?

The repository has no license, so all rights stay with Abhi90808. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ATmega328p microcontroller 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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