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Fpga audio mixer

brockbyte·fpga-audio-mixer·board/FPGAMixer ordered.kicad_pcb

Fpga audio mixer PCB layout, top view — open source board by brockbyte

About the Fpga audio mixer PCB

Fpga audio mixer is an open source PCB design by brockbyte, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 341 × 234.5 mm, with 66 components from 16 distinct parts.

Other key parts include the PCA9548Board, MCP23017_SP, TB6612, MPR121QR2_Board and MCP3008. By type, the board carries 25 switches, 11 ICs, 10 resistors, 8 LEDs, 3 connectors and 1 capacitor.

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

From the project

FPGA Based DIY Digital Audio Mixer with AES67 network in/out, motorized faders, OLED displays and Web Remote Control

There is an error in the schematic and board layout. PIN 36 of the 40 pin connector and PIN 13 of the MCP3008 IC should be connected, but due to a net name mismatch in the schematic, they are not.

You need to solder a connection manually between these two pins.

I first tried to connect the rotary encoders via the MCP I/O expander. However, that turned out to be not working properly due to a lot issues with switch bouncing, as the MCP were not fast enough for rotating the knobs quickly. So, I connected the rotary encoders also directly to the FPGA. Luckily, the Intel Dev board had a lot of…

Fpga audio mixer, from the project README
From the project README

Main components on the Fpga audio mixer

PCA9548BoardMCP23017_SPTB6612MPR121QR2_BoardMCP3008

Fpga audio mixer bill of materials (BOM)

66 components, 16 distinct parts.

QtyPartRefs
1
PCA9548Board
U1
4
MCP23017_SP
U2, U3, U10, U11
4
TB6612
U4, U5, U6, U12
1
MPR121QR2_Board
U8
1
MCP3008
U9
1
Conn_02x20_Odd_Even
J1
1
Conn_01x02
J2
1
Conn_Coaxial
J5
8
MF60T_Fader
RV1, RV2, RV3, RV4, RV5, RV6, RV7, RV8
8
EC12E2424407
S1, S2, S3, S4, S5, S6, S7, S8
1
OLED_ROTARY
S9
16
SW_Push_TS5
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +8
8
SSD1306
Brd1, Brd2, Brd3, Brd4, Brd5, Brd6, Brd7, Brd8
1
C
C1
5
R
R1, R2, R3, R4, R5
5
R_Network08
RN1, RN2, RN3, RN4, RN5

Fpga audio mixer design files

The KiCad project lives in the brockbyte/fpga-audio-mixer repository on GitHub; these links point at the commit this page was built from.

Fpga audio mixer: common questions

How big is the Fpga audio mixer PCB?

The Fpga audio mixer measures 341 × 234.5 mm, has 2 copper layers and is 1.579 mm thick.

How many components are on the Fpga audio mixer?

66 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Fpga audio mixer design files?

From the brockbyte/fpga-audio-mixer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Fpga audio mixer design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which brockbyte chose for the repository.

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