HardLabs

AVR488

VE7PMC·AVR488·Hardware/AVR488.kicad_pcb

AVR488 PCB layout, top view — open source AVR/Arduino board by VE7PMC
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About the AVR488 PCB

AVR488 is an open source AVR/Arduino PCB design by VE7PMC, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 86 × 70 mm, with 24 components from 18 distinct parts.

Its main chip is the ATmega168-20P, from the AVR/Arduino family. Other key parts include the MCP2221AxP, SN75161BN and SN75160BN. By type, the board carries 6 capacitors, 5 connectors, 5 resistors, 4 ICs, 3 diodes and 1 switch.

It belongs with the usb & debug tools designs in this gallery.

From the project

USB to IEEE-488 interface based on the ATmega168/328 microcontroller

A PrologixTM compatible(ish) USB to IEEE 488/GPIB/HP-IB controller interface based on the ATmega168/328 microcontroller.

I designed the AVR488 interface so that I could communicate with my various legacy Hewlett Packard / Agilent test instruments. There are numerous Arduino-based variations of USB/IEEE 488 interfaces out there already, but I prefer programming AVR devices down at the "bare metal" level using C code, so I came up with this version. Since it's necessary to construct a physical interface for the IEEE 488 connector anyway, it's easy enough to add an ATmega and driver ICs into…

AVR488, from the project README
From the project README

Main components on the AVR488

MCP2221AxPATmega168-20PSN75161BNSN75160BN

AVR488 bill of materials (BOM)

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

QtyPartRefs
1
MCP2221AxP
U1
1
ATmega168-20P
U2
1
SN75161BN
U3
1
SN75160BN
U4
1
Mini USB
J1
1
SERIAL
J2
1
ISP
J3
1
HEADER
J4
1
IEEE488
J5
1
RESET
SW1
1
LED(R)
D1
1
LED(Y)
D2
1
LED(G)
D3
4
0.1uF
C1, C2, C3, C4
1
0.47 uF
C5
1
1uF
C6
2
10k
R1, R5
3
330
R2, R3, R4

AVR488 design files

The KiCad project lives in the VE7PMC/AVR488 repository on GitHub; these links point at the commit this page was built from.

AVR488: common questions

What microcontroller does the AVR488 use?

The AVR488 is built around the ATmega168-20P, from the AVR/Arduino family.

How big is the AVR488 PCB?

The AVR488 measures 86 × 70 mm, has 2 copper layers and is 1.69 mm thick.

How many components are on the AVR488?

24 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 AVR488 design files?

From the VE7PMC/AVR488 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 AVR488 design in my own project?

Yes, under the terms of its GPL-3.0 license, which VE7PMC chose for the repository.

Can I test firmware for the AVR488 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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