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Main board-3.2

lleck·PercussiveInterface-3·percussiveInterface-3.2/main_board_old/main_board-3.2.kicad_pcb

Main board-3.2 layout, top view — open source ESP32 board by lleck
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About the Main board-3.2

Main board-3.2 is an open source ESP32 PCB design by lleck, published on GitHub. It is a 4-layer board measuring 390 × 390 mm, with 36 components from 24 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N16R8, from the ESP32 family. Other key parts include the ADG731BSUZ, TXU0304PWR, LM3940IMP-3.3/NOPB, SN74LV1T34DBV and QRE1113GR. By type, the board carries 11 connectors, 11 capacitors, 7 ICs, 3 resistors, 2 switches and 1 jumper.

From the project

some files emerging in the development of a digital percussive interface

Main components on the Main board-3.2

ADG731BSUZTXU0304PWRLM3940IMP-3.3/NOPBSN74LV1T34DBVESP32-S3-WROOM-1-N16R8QRE1113GR

Main board-3.2 bill of materials (BOM)

36 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ADG731BSUZ
IC1
1
TXU0304PWR
IC2
1
LM3940IMP-3.3/NOPB
LM3940IMP-3.3_NOPB
IC3
2
SN74LV1T34DBV
U1, U2
1
ESP32-S3-WROOM-1-N16R8
ESP32-S3-WROOM-1-n16r8
U34
1
QRE1113GR
U35
1
0022232041
Molex
J1
2
BSW-112-X-X-S
J2, J12
1
BSW-120-04-X-S
J3
4
SLW-104-01-G-S
J5, J6, J7, J8
2
SAMTEC-SLW-108-01-X-S
J9, J10
1
SCREW_TERMINAL_01X02
Screw_Terminal_01x02
J11
1
SOLDERJUMPER_2_BRIDGED
SolderJumper_2_Bridged
JP1
1
C231329
SW_Boot
SW1
1
C231329
SW_Reset
SW2
1
APA102-2020
D1
1
C12530
22µ
C1
1
C52923
1µ
C2
2
22PF
22pF
C3, C4
5
C1525
0.1µ
C5, C6, C34, C35, C36
Show 4 more
QtyPartRefs
1
C7203
33µF
C37
1
C1623
0.47µF
C38
1
100
R1
2
10K
10k
R2, R3

Main board-3.2 design files

The KiCad project lives in the lleck/PercussiveInterface-3 repository on GitHub; these links point at the commit this page was built from.

Main board-3.2: common questions

What microcontroller does the Main board-3.2 use?

The Main board-3.2 is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.

How big is the Main board-3.2?

The Main board-3.2 measures 390 × 390 mm, has 4 copper layers and is 1.592 mm thick.

How many components are on the Main board-3.2?

36 components, from 24 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 Main board-3.2 design files?

From the lleck/PercussiveInterface-3 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 Main board-3.2 design in my own project?

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

Can I test firmware for the Main board-3.2 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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