HardLabs

DevBoard

Apishrana·DevBoard

DevBoard PCB layout, top view — open source AVR/Arduino board by Apishrana
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About the DevBoard PCB

DevBoard is an open source AVR/Arduino PCB design by Apishrana, published on GitHub. It is a 2-layer board measuring 36 × 70.5 mm, with 22 components from 18 distinct parts.

Its main chip is the ATmega328-P, from the AVR/Arduino family. Other key parts include the CH340G and L7805. By type, the board carries 10 capacitors, 4 connectors, 3 ICs, 2 crystals, 2 resistors and 1 switch.

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

From the project

Custom ATmega328-P based devboard for Arduino-like systems.

Custom ATmega328-P based devboard for Arduino-like systems.

- ATmega328-P as Microcontroller - USB-C Support - CH340G for USB-to-Serial - Digital Pin 0-13 - Analog Pin A0-A5 - 5 V VIN Regulation with L7805 - Reset Button

- Microcontroller: ATmega328-P - USB Serial: CH340G - Main Clock: 16 MHz - USB Serial Clock: 12 MHz - Input Power: USB-C or VIN

DevBoard, from the project README
From the project README

Main components on the DevBoard

ATmega328-PCH340GL7805

DevBoard bill of materials (BOM)

22 components, 18 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATmega328-P
U1
1
CH340G
U2
1
L7805
U3
1
12MHz
Y1
1
16MHz
Y2
1
0-13 pin
J1
1
A0-A5
J2
1
Power
J3
1
USB_C_Plug_USB2.0
P1
1
SW_Push
SW1
4
22pF
C1, C2, C7, C8
1
10nF
C3
2
100nF
C6, C9
1
0.33µF
C13
1
0.1µF
C14
1
10uF
C15
1
5.1k
R1
1
5k
R2

DevBoard design files

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

DevBoard: common questions

What microcontroller does the DevBoard use?

The DevBoard is built around the ATmega328-P, from the AVR/Arduino family.

How big is the DevBoard PCB?

The DevBoard measures 36 × 70.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the DevBoard?

22 components, from 18 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the DevBoard design files?

From the Apishrana/DevBoard repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the DevBoard design in my own project?

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

Can I test firmware for the DevBoard 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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