HardLabs

Scampi

mackieks·scampi·hardware/KiCAD/scampi.kicad_pcb

Scampi PCB layout, top view — open source AVR/Arduino board by mackieks

About the Scampi PCB

Scampi is an open source AVR/Arduino PCB design by mackieks, published on GitHub under the SHL-2.1 license. It is a 2-layer board measuring 20 × 20 mm, with 55 components from 23 distinct parts.

Its main chip is the ATTINY1616-MNR, from the AVR/Arduino family. Other key parts include the TXU0104RUTR, MIC5365-1.8YC5-TR and TLV320AIC3110. By type, the board carries 23 test points, 18 capacitors, 5 jumpers, 4 ICs, 4 resistors and 1 connector.

It belongs with the audio designs in this gallery.

From the project

🦐Truly universal audio amp for portablizers

Scampi is a truly universal OSHW audio amp for portablizers. Hardware design is tested and working. Firmware is nearly complete.

- Low-cost 20x20mm 2-layer PCB - TLV320AIC3110 codec with stereo 1.3W Class-D amps and Class-AB headphone driver - 5V-tolerant level-shifted I2S input + analog input - Onboard switching 3.5mm headphone jack - Solder jumpers for mode selection (15 modes planned) - Shrimp-themed!🦐

Scampi, from the project README
From the project README

Main components on the Scampi

TXU0104RUTRMIC5365-1.8YC5-TRTLV320AIC3110ATTINY1616-MNR

Scampi bill of materials (BOM)

55 components, 23 distinct parts.

QtyPartRefs
1
TXU0104RUTR
U1
1
MIC5365-1.8YC5-TR
U2
1
TLV320AIC3110
U3
1
ATTINY1616-MNR
U4
1
PJ320D Pink
J1
5
SolderJumper_2_Open
JP1, JP2, JP3, JP4, JP5
12
~
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +4
1
SPKL+
TP13
1
SPKL-
TP14
1
SPKR-
TP15
1
SPKR+
TP16
1
SPVDD
TP17
1
HPL
TP18
1
HPR
TP19
1
HPS
TP20
1
VOL+
TP25
1
VOL-
TP26
1
GND
TP29
4
1µF
C1, C4, C16, C17
9
0.1µF
C2, C3, C5, C8, C9, C10, C11, C12 +1
Show 3 more
QtyPartRefs
3
10µF
C6, C7, C13
2
47µF
C14, C15
4
4.7k
R1, R2, R3, R4

Scampi design files

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

Scampi: common questions

What microcontroller does the Scampi use?

The Scampi is built around the ATTINY1616-MNR, from the AVR/Arduino family.

How big is the Scampi PCB?

The Scampi measures 20 × 20 mm, has 2 copper layers and is 1 mm thick.

How many components are on the Scampi?

55 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the Scampi design files?

From the mackieks/scampi repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Scampi design in my own project?

It is published under SHL-2.1, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Scampi 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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