HardLabs

Signal.echo

coderarjob·signal.echo·schematic/scopetester.kicad_pcb

Signal.echo PCB layout, top view — open source AVR/Arduino board by coderarjob
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About the Signal.echo PCB

Signal.echo is an open source AVR/Arduino PCB design by coderarjob, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 73.7 × 54.4 mm, with 42 components from 13 distinct parts.

Its main chip is the ATmega8A-P, from the AVR/Arduino family. By type, the board carries 24 resistors, 7 capacitors, 4 diodes, 3 connectors, 1 IC and 1 crystal.

It belongs with the test & measurement designs in this gallery.

From the project

Demo board which generates sample signals experimenting/checking oscilloscope features

This is a hardware project based on Atmega8A microcontroller. This project came about from a personal need for a demo board to test my new oscilloscope. I plan to create a complete PCB along with firmware in this repo.

Caution: The master branch contains changes for the upcoming version and may not always be stable. If you wish to manufacture, use the latest release/versionx.x` branch or one of the released versions.

Signal.echo, from the project README
From the project README

Main components on the Signal.echo

ATmega8A-P

Signal.echo bill of materials (BOM)

42 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATmega8A-P
U1
1
16MHz
Y1
1
CON_PWR
J1
1
Conn_01x04
J2
1
AVR_ISP
J3
1
Jumper_2_Bridged
JP1
1
SW_Push
SW1
4
LED_Small
D1, D2, D3, D4
4
100nF
C1, C2, C6, C7
2
22pF
C3, C4
1
10uF
C5
1
10k
R1
23
2.2k
R2, R3, R4, R5, R6, R7, R8, R9 +15

Signal.echo design files

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

Signal.echo: common questions

What microcontroller does the Signal.echo use?

The Signal.echo is built around the ATmega8A-P, from the AVR/Arduino family.

How big is the Signal.echo PCB?

The Signal.echo measures 73.7 × 54.4 mm, has 2 copper layers and is 1.59 mm thick.

How many components are on the Signal.echo?

42 components, from 13 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 Signal.echo design files?

From the coderarjob/signal.echo 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 Signal.echo design in my own project?

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

Can I test firmware for the Signal.echo 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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