HardLabs

AudioMixer Duo LBB

gfm16617·EngrEDU_Website·Class_Projects/Circuits/AudioMixer_Duo_LBB/AudioMixer_Duo_LBB.kicad_pcb

AudioMixer Duo LBB PCB layout, top view — open source RP2040/RP2350 board by gfm16617

About the AudioMixer Duo LBB PCB

AudioMixer Duo LBB is an open source RP2040/RP2350 PCB design by gfm16617, published on GitHub. It is a 2-layer board measuring 100 × 85.3 mm, with 27 components from 19 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the NCP1117IST33T3G. By type, the board carries 11 connectors, 5 resistors, 4 capacitors and 2 ICs.

It belongs with the audio designs in this gallery.

Main components on the AudioMixer Duo LBB

NCP1117IST33T3GRP2040

AudioMixer Duo LBB bill of materials (BOM)

27 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NCP1117IST33T3G
LM741
U1
1
RP2040
LM741
U2
1
CONN_01X02
BLE Power
J1
1
10118194-0001LF
BLE Signal
J2
1
CONN_01X15
Audio Output Conn
J3
1
CONN_01X15
Audio Right Jumper
J4
1
Audio Left Jumper
J5
1
Power Conn
J6
1
Osc Output Conn
J7
1
BLE Power
J8
1
BLE Signal
J9
1
BLE1 Power Jumper
J10
1
BLE2 Power Jumper
J11
5
100k
RV1, RV2, RV3, RV4, RV5
2
04024D106MAT2A
0.1uF
C1, C2
2
0402YC104KAT2A
0.1uF
C3, C4
2
CRT0402-BY-1001GLF
51k
R1, R5
1
51k
R2
2
RCS040227R0FKED
51k
R3, R4

AudioMixer Duo LBB design files

The KiCad project lives in the gfm16617/EngrEDU_Website repository on GitHub; these links point at the commit this page was built from.

AudioMixer Duo LBB: common questions

What microcontroller does the AudioMixer Duo LBB use?

The AudioMixer Duo LBB is built around the RP2040, from the RP2040/RP2350 family.

How big is the AudioMixer Duo LBB PCB?

The AudioMixer Duo LBB measures 100 × 85.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the AudioMixer Duo LBB?

27 components, from 19 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 AudioMixer Duo LBB design files?

From the gfm16617/EngrEDU_Website 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 AudioMixer Duo LBB design in my own project?

The repository has no license, so all rights stay with gfm16617. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the AudioMixer Duo LBB without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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