HardLabs

DuPAL Board

OddbitCoder·DuPAL_Board·board/DuPal_DIP/DuPal_DIP.kicad_pcb

DuPAL Board layout, top view — open source AVR/Arduino board by OddbitCoder

About the DuPAL Board

DuPAL Board is an open source AVR/Arduino PCB design by OddbitCoder, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 113 × 78.7 mm, with 50 components from 25 distinct parts.

Its main chip is the ATmega8A-PU, from the AVR/Arduino family. Other key parts include the 74HC595, 20 Pin PAL, MAX232, L7805 and 74HC166. By type, the board carries 17 capacitors, 14 resistors, 9 ICs, 5 diodes, 2 connectors and 2 switches.

From the project

DuPAL KiCad schematics & PCB (upgraded to KiCad 7)

Any use of this project is under your own responsibility. You will be responsible of checking the correct construction and functionality of your board and the compatiblity of the chips You will insert into it. By using this project You will agree that I cannot be held responsible if it will destroy any of your devices, damage your computer, burn down your house or whatever.

DuPAL Board, from the project README
From the project README

Main components on the DuPAL Board

ATmega8A-PU74HC59520 Pin PALMAX232L780574HC16624 Pin PAL

DuPAL Board bill of materials (BOM)

50 components, 25 distinct parts.

QtyPartRefs
1
ATmega8A-PU
U1
3
74HC595
U2, U3, U9
1
20 Pin PAL
U5
1
MAX232
U6
1
L7805
U7
1
74HC166
U8
1
24 Pin PAL
U10
1
20Mhz
Y1
1
AVR-ISP-6
J1
1
Power IN
J3
1
SW_Push
SW1
1
Power
SW2
1
DATA_LED
D1
1
POWER_LED
D2
1
1N4001
D3
1
PAL20_LED
D4
1
PAL24_LED
D5
2
22pF
C1, C2
10
100nF
C3, C8, C9, C10, C11, C12, C13, C14 +2
4
1.0uF
C4, C5, C6, C7
Show 5 more
QtyPartRefs
1
0.22uF
C15
9
10K
R1, R2, R3, R4, R5, R6, R7, R8 +1
3
680
R16, R19, R20
1
1.2K
R17
1
1M
R18

DuPAL Board design files

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

DuPAL Board: common questions

What microcontroller does the DuPAL Board use?

The DuPAL Board is built around the ATmega8A-PU, from the AVR/Arduino family.

How big is the DuPAL Board?

The DuPAL Board measures 113 × 78.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the DuPAL Board?

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

Where can I download the DuPAL Board design files?

From the OddbitCoder/DuPAL_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 DuPAL Board design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which OddbitCoder chose for the repository.

Can I test firmware for the DuPAL 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.

Similar boards