HardLabs

Digital

Synthron·SymAsym·Hardware/Black_Devil/digital.kicad_pcb

Digital PCB layout, top view — open source AVR/Arduino board by Synthron

About the Digital PCB

Digital is an open source AVR/Arduino PCB design by Synthron, published on GitHub. It is a 2-layer board measuring 160 × 100 mm, with 99 components from 41 distinct parts.

Its main chip is the ATmega328P-A, from the AVR/Arduino family. Other key parts include the L7805, AP1117-33 and ADuM1201AR. By type, the board carries 28 capacitors, 19 resistors, 15 connectors, 11 diodes, 5 ICs and 5 transistors.

It belongs with the audio and displays & leds designs in this gallery.

From the project

High Power Audio Amplifier based on the Red Devil SymAsym PCBs from audiopcb.de

High Power Audio Amplifier based on the Red Devil SymAsym PCBs from audiopcb.de

For complete system schematic of a stereo amplifier, refer to OverviewSchematic.pdf**_

Zusätzliches Empfangsmodul "Up2Stream Pro V3" empfohlen.

- Black Devil Amplifier - 2x benötigt für Stereo - Extra Kühlkörper benötigt - siehe unten - Netzfilter und Softstart - designed für Stereo, für Mono in der Mitte teilen - VU-Meter - Digital-Support - Extra OLED benötigt (I2C-Schnittstelle, siehe unten)

Main components on the Digital

ATmega328P-AL7805AP1117-33ADuM1201AR

Digital bill of materials (BOM)

99 components, 41 distinct parts.

QtyPartRefs
1
ATmega328P-A
U101
2
L7805
U102, U103
1
AP1117-33
U104
1
ADuM1201AR
U105
5
BSS138
Q103, Q104, Q105, Q106, Q107
1
16MHz
Y101
1
L1
J101
1
N
J102
2
OLED
J103, J104
1
Encoder
J105
1
Up2Stream
J106
1
ICSP
J107
1
Klinke_Right
J108
1
Klinke_Links
J109
1
Cinch_Right
J110
1
Cinch_Left
J111
1
Left
J112
1
Right
J113
1
VU-Meter
J114
1
Up2Stream
J115
Show 21 more
QtyPartRefs
1
0,5A
F101
2
Heatsink
HS101, HS102
3
G6K-2
K101, K102, K103
1
RotaryEncoder_Switch
SW101
2
Thermistor_NTC
TH101, TH102
1
PD2
TP101
1
PD3
TP102
1
PD4
TP103
2
TestPoint
TP104, TP105
1
UI 39/10,2 209
TR101
8
1N4004
D101, D102, D103, D104, D108, D109, D110, D111
3
LL4148
D105, D106, D107
8
1µ
C101, C104, C111, C114, C117, C119, C125, C126
10
100n
C102, C103, C105, C112, C115, C116, C118, C120 +2
2
18p
C106, C107
8
470µ
C108, C109, C110, C113, C121, C122, C123, C124
6
4k7
R101, R102, R103, R104, R107, R108
1
1M
R109
7
10k
R110, R111, R112, R113, R114, R115, R116
3
100k
R117, R118, R119
2
470k
R120, R121

Digital design files

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

Digital: common questions

What microcontroller does the Digital use?

The Digital is built around the ATmega328P-A, from the AVR/Arduino family.

How big is the Digital PCB?

The Digital measures 160 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Digital?

99 components, from 41 distinct parts. The full bill of materials is listed on this page.

Where can I download the Digital design files?

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

Can I use the Digital design in my own project?

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

Can I test firmware for the Digital 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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