HardLabs

Marvin

norahueppi·Marvin·6_Semester/MarvinHW/KiCad/MarvinProjekt/MarvinProjekt.kicad_pcb

Marvin PCB layout, top view — open source ESP32 board by norahueppi

About the Marvin PCB

Marvin is an open source ESP32 PCB design by norahueppi, published on GitHub. It is a 4-layer board measuring 73.1 × 86.8 mm, with 131 components from 56 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the ES8388, MP1720, TF_CARD, DW01A and FS8205A. By type, the board carries 51 resistors, 44 capacitors, 13 ICs, 9 switches, 5 diodes and 3 transistors.

From the project

Marvin is a attempt to recreate the moaning Doors from Hitchhikers Guide to the Galaxy

Marvin is a attempt to recreate the moaning Doors from Hitchhikers Guide to the Galaxy

- ESP32-A1S Audio Module - Battery Powered - SD-Card Audio Storage - MP3 Capable

Main components on the Marvin

ESP32-S3-WROOM-1ES8388MP1720TF_CARDDW01AFS8205AHM4056HTPLP5907MFX-3.3WS2812ToF

Marvin bill of materials (BOM)

131 components, 56 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-WROOM-1
U1
1
ES8388
U2
1
MP1720
U3
1
TF_CARD
U4
1
DW01A
U5
1
FS8205A
U6
1
HM4056H
U7
1
TPLP5907MFX-3.3
U8
4
WS2812
U9, U11, U12, U13
1
ToF
U10
2
Q_PNP_Darlington_BCE
Q1, Q2
1
BC817-40
Q3
1
USB3.1C16PFSMT
精拓金
X1
1
CONN_02X03_ODD_EVEN
Conn_02x03_Odd_Even
J1
1
CONN_01X04_PIN
Conn_01x04_Pin
J2
1
Battery_Cell
BT1
1
Speaker
LS1
2
Reset
SW1, SW8
2
Boot
SW2, SW9
1
Volume+
SW3
Show 36 more
QtyPartRefs
1
Volume-
SW4
1
MODI1
Modi1
SW5
1
MODI0
Modi0
SW6
1
Switch Slide SPDT 100mA 12V
Dailywell(德利威)
SW7
3
PRTR5V0U2X_1727-3884-6
PRTR5V0U2X_1727-3884-6-ND
TECH PUBLIC(台舟)
D1, D2, D3
1
Orange
D4
1
Green
D5
1
Ferrite_Bead_Small
FB1
6
1UF
1uF
C1, C22, C27, C37, C38, C40
1
4U7F
4u7F
C2
8
100NF
100nF
C3, C23, C24, C26, C41, C42, C43, C44
1
1uF, 25V
C4
7
0.1UF
0.1uF
C5, C7, C8, C16, C17, C18, C35
9
10UF
10uF
C6, C9, C10, C13, C14, C15, C21, C34 +1
2
20PF
20pF
C11, C12
3
22UF
22uF
C19, C20, C25
1
10NF
10nF
C28
1
1NF
1nF
C29
2
330PF
330pF
C30, C31
1
390PF
390pF
C32
1
0,1uF
C33
1
47UF
47uF
C39
2
5.1K
5.1k
R1, R2
14
10K
10k
R3, R17, R18, R22, R27, R33, R36, R37 +6
1
3.3K
3.3k
R4
4
100
R5, R8, R9, R34
1
4.7
R6
8
0
R7, R25, R26, R28, R29, R30, R31, R32
3
2k
R10, R11, R42
6
33
R12, R13, R14, R15, R19, R20
3
1k
R16, R35, R51
3
1M
R21, R24, R49
1
33K
33k
R23
2
1.5K
1.5k
R38, R41
2
1.8K
1.8k
R47, R50
1
2.5K
2.5k
R48

Marvin design files

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

Marvin: common questions

What microcontroller does the Marvin use?

The Marvin is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Marvin PCB?

The Marvin measures 73.1 × 86.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Marvin?

131 components, from 56 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 Marvin design files?

From the norahueppi/Marvin 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 Marvin design in my own project?

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

Can I test firmware for the Marvin 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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