HardLabs

Cat644

carangil·cat644·kicad/cat644.kicad_pcb

Cat644 PCB layout, top view — open source AVR/Arduino board by carangil

About the Cat644 PCB

Cat644 is an open source AVR/Arduino PCB design by carangil, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 101.6 × 76.2 mm, with 46 components from 29 distinct parts.

Its main chip is the ATMEGA644-P, from the AVR/Arduino family. Other key parts include the 74LS573, 628128, 74LS244, 7805 and LF33. By type, the board carries 14 capacitors, 11 resistors, 8 ICs, 7 connectors, 5 diodes and 1 crystal.

From the project

Cat-644 is a microcomputer based around the Atmega644 microcontroller. This repository will hold both hardware designs and software source code.

Cat-644 is a microcomputer based around the Atmega644 microcontroller. This repository will hold both hardware designs and software source code.

schematics/ hardware information cat1/ OLD hardware test routines. Will be deleted when CAT-OS is finished cat-os/ 'scratchpad' OS. Being built out of code in the cat1 directory

All code is under GPL v2. See LICENSE file for details.

Main components on the Cat644

ATMEGA644-P74LS57362812874LS2447805LF33MAX232

Cat644 bill of materials (BOM)

46 components, 29 distinct parts.

QtyPartRefs
1
ATMEGA644-P
U1
1
74LS573
U2
1
628128
U3
2
74LS244
U4, U8
1
7805
U5
1
LF33
U6
1
MAX232
U7
1
OSC 20MHz
X1
1
PWR
P1
1
ISP
P2
1
SER
P3
1
SD
P4
1
PS2
P5
1
AUD
P6
1
VGA
P7
1
1N4001
D1
1
LED
D2
3
D
D3, D4, D5
5
0.1uF
C1, C2, C3, C4, C10
1
470uF
C5
Show 9 more
QtyPartRefs
1
0.1 uF
C6
1
2.2 uF
C7
1
10uF
C8
4
1uF
C9, C11, C12, C13
1
0.01uF
C14
1
10k
R1
3
1k
R2, R3, R4
4
470
R5, R6, R7, R8
3
5k
R9, R10, R11

Cat644 design files

The KiCad project lives in the carangil/cat644 repository on GitHub; these links point at the commit this page was built from.

Cat644: common questions

What microcontroller does the Cat644 use?

The Cat644 is built around the ATMEGA644-P, from the AVR/Arduino family.

How big is the Cat644 PCB?

The Cat644 measures 101.6 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cat644?

46 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cat644 design files?

From the carangil/cat644 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Cat644 design in my own project?

Yes, under the terms of its GPL-2.0 license, which carangil chose for the repository.

Can I test firmware for the Cat644 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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