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Sound

eshazen·scope-clock·hardware/sound/sound.kicad_pcb

Sound PCB layout, top view — open source AVR/Arduino board by eshazen

About the Sound PCB

Sound is an open source AVR/Arduino PCB design by eshazen, published on GitHub. It is a 2-layer board measuring 177.8 × 114.3 mm, with 39 components from 34 distinct parts.

Its main chip is the 6SN7, from the AVR/Arduino family. By type, the board carries 12 resistors, 11 capacitors, 6 connectors, 3 ICs, 2 diodes and 1 crystal.

From the project

OK, time to jump on the oscilloscope clock bandwagon! It's an old idea, but they just look so cool.

OK, time to jump on the oscilloscope clock bandwagon! It's an old idea, but they just look so cool.

This was going to be a simple clone of some rather simplistic transistor-based designs around the internet, but now I've got something more ambitious in mind! Here's the prototype in action:

3BP1(A) CRT with proper drive to +360/-1400V pcb Tube-based deflection circuit using 6SN7 or 12SN7 dual triodes pcb Voltage-multiplier HV supply using an Antek transformer Display-list based vector graphics generator (or could cheat and use a uC)

Sound, from the project README
From the project README

Main components on the Sound

6SN7

Sound bill of materials (BOM)

39 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
6SN7
6CY7
U1
1
6SN7
SN76489
U2
1
6SN7
ATtiny84A-P
U3
1
CXO_DIP8
X1
1
CONN_01X02
Conn_01x02
J1
1
CONN_01X04
AVR-ISP-6
J2
1
CONN_01X03
Conn_01x02
J3
1
CONN_01X06
Conn_01x02
J4
1
Conn_01x02
J5
1
Conn_01x04
J6
1
JP2
JP1
1
Speaker
LS1
1
25K
100k_audio
RV1
1
125BSE
T1
2
1N4007
D1, D2
1
.0033uF
C1
1
100uF
C2
1
0.025UF
33uF 400V
C3
1
0.025UF
100u 400V
C4
2
100u 400V
C5, C6
Show 14 more
QtyPartRefs
1
220PF
100u 400V
C7
1
220PF
0.1uF
C8
2
0.1UF
0.1uF
C9, C10
1
2.2uF
C11
1
100k
R1
2
1.5k
R2, R5
1
1M
R3
1
1k 1W
R4
1
R_US
R6
1
120 ohm 5W
R7
2
200 ohm 5W
R8, R9
1
10k
R10
1
1
R11
1
100
R12

Sound design files

The KiCad project lives in the eshazen/scope-clock repository on GitHub; these links point at the commit this page was built from.

Sound: common questions

What microcontroller does the Sound use?

The Sound is built around the 6SN7, from the AVR/Arduino family.

How big is the Sound PCB?

The Sound measures 177.8 × 114.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sound?

39 components, from 34 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 Sound design files?

From the eshazen/scope-clock 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 Sound design in my own project?

The repository has no license, so all rights stay with eshazen. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Sound 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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