HardLabs

OBC644-10D

kentN·OBC644-10D·Hardware/KiCad/OBC644-10D.kicad_pcb

OBC644-10D PCB layout, top view — open source AVR/Arduino board by kentN

About the OBC644-10D PCB

OBC644-10D is an open source AVR/Arduino PCB design by kentN, published on GitHub under the MIT license. It is a 2-layer board measuring 45 × 45 mm, with 57 components from 28 distinct parts.

Its main chip is the ATMEGA644PA-AUR, from the AVR/Arduino family. Other key parts include the LT1761ES5-3.3, REF3320AIDCKT, RX8900CE, MS561101BA03-00 and MPU-9250. By type, the board carries 24 capacitors, 12 ICs, 11 resistors, 4 connectors, 3 diodes and 1 crystal.

From the project

arduino compatible on-board computer

- analog & Motion Datalogger - Energy Harvest sensor - DIY Space - DIY HAB

- KiCad (4.0.x) - Arduino IDE (1.8.X) - Sanguino bootloader ( https://github.com/Lauszus/Sanguino ) - SDfatlib

OBC644-10D, from the project README
From the project README

Main components on the OBC644-10D

LT1761ES5-3.3ATMEGA644PA-AURREF3320AIDCKTRX8900CEMS561101BA03-00MPU-9250microSD_hinge 0472192001M25XX_ROM1INA226AQDGSRQ1LT1761ES5-XXM25XX_ROM2

OBC644-10D bill of materials (BOM)

57 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LT1761ES5-3.3
U1
1
ATMEGA644PA-AUR
U2
1
REF3320AIDCKT
U3
1
RX8900CE
U4
1
MS561101BA03-00
U5
1
MPU-9250
U6
1
microSD_hinge 0472192001
U7
1
M25XX_ROM1
U8
1
INA226AQDGSRQ1
U9
2
LT1761ES5-XX
LT1761ES5-xx
U10, U11
1
M25XX_ROM2
U12
1
NX3225GD-8MHZ
X1
2
CONN_11
J1, J2
1
CONN_4
CONN_11
J3
1
53047
J5
1
H**
Drill_M3
1
0.01
RS1
2
SML-D12M8WT86
D1, D2
1
BAS70T-05T-7-F
D3
4
1u
C1, C4, C13, C14
Show 8 more
QtyPartRefs
4
10U
10u
C2, C15, C22, C23
13
0.1U
0.1u
C3, C5, C8, C9, C10, C11, C12, C16 +5
2
15P
15p
C6, C7
1
0.01U
0.01u
C17
4
10K
10k
R1, R2, R7, R13
2
3.3K
3.3k
R3, R4
3
1k
R5, R6, R12
2
4.7
R10, R11

OBC644-10D design files

The KiCad project lives in the kentN/OBC644-10D repository on GitHub; these links point at the commit this page was built from.

OBC644-10D: common questions

What microcontroller does the OBC644-10D use?

The OBC644-10D is built around the ATMEGA644PA-AUR, from the AVR/Arduino family.

How big is the OBC644-10D PCB?

The OBC644-10D measures 45 × 45 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OBC644-10D?

57 components, from 28 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 OBC644-10D design files?

From the kentN/OBC644-10D repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the OBC644-10D design in my own project?

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

Can I test firmware for the OBC644-10D 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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