HardLabs

Lumenlab

ericmcdaniel·lumenlab·board/lumenlab-pcb.kicad_pcb

Lumenlab PCB layout, top view — open source ESP32 board by ericmcdaniel
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About the Lumenlab PCB

Lumenlab is an open source ESP32 PCB design by ericmcdaniel, published on GitHub under the MIT license. It is a 4-layer board measuring 99.9 × 80 mm, with 72 components from 46 distinct parts.

Its main chip is the ESP32-WROOM-32E, from the ESP32 family. Other key parts include the MP2338, AP7361C-33E, SN74AHCT1G125, SSD1306 and LM386MX-1/NOPB. By type, the board carries 24 capacitors, 21 resistors, 7 ICs, 6 connectors, 6 test points and 2 diodes.

It belongs with the retro computing designs in this gallery.

From the project

A gaming and entertainment platform for RGB LED strips that fills your space with abstract, retro, arcade-like games and animations powered by an ESP32.

The LumenLab was built in two phases. The first phase (labeled as "Version 1") was a prototype that used through-hole components hand-soldered on to several perf boards. This was a good start, especially for making progress in the early stages of the software development, however the components did not work exactly as desired, making its maintanance more of a hassle than it was a benefit. Designing a PCB to be professionally manufactured became a clear and obvious choice, allowing the LumenLab to be scaled into a clean, stable device.

Lumenlab, from the project README
From the project README

Main components on the Lumenlab

MP2338AP7361C-33ESN74AHCT1G125SSD1306LM386MX-1/NOPBESP32-WROOM-32ECP2102N-Axx-xQFN24

Lumenlab bill of materials (BOM)

72 components, 46 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MP2338
U1
1
AP7361C-33E
U2
1
SN74AHCT1G125
U3
1
SSD1306
U4
1
LM386MX-1/NOPB
LM386MX
Texas Instruments
U5
1
ESP32-WROOM-32E
U6
1
CP2102N-Axx-xQFN24
U7
1
2.1mm Barrel Jack
J1
1
01x06
J2
1
01x04
J3
1
3220-10-0100-00
JTAG
CNC Tech
J4
1
USB_C_Receptacle_USB2.0_16P
J5
1
B2B-XH-A(LF)(SN)
B2B-XH-A_LF__SN_
JST Sales America Inc.
J6
1
Polyfuse
F1
1
Speaker
LS1
1
10K LOG
RV1
1
10K LIN
RV2
1
SW_SPST
SW1
1
12V
TP1
1
EN
TP2
Show 26 more
QtyPartRefs
1
IO0
TP3
1
3.3V
TP4
1
5V
TP5
1
LED_SIG
TP6
1
SMAJ12CA
D1
1
ESD122DMYR
D2
1
6.8uH
L1
1
300pF
C1
1
22nF
C2
12
0.1uF
C3, C4, C6, C12, C14, C15, C17, C18 +4
4
22uF
C5, C9, C10, C11
2
4.7uF
C7, C8
2
1000uF
C13, C16
1
250uF
C20
1
0.05uF
C21
1
90.9K
R1
6
10K
R2, R3, R6, R9, R10, R12
1
191K
R4
1
330
R5
1
33
R7
1
49.9K
R8
3
1K
R11, R13, R15
1
10
R14
2
5.1K
R16, R17
2
22
R18, R19
2
4.7K
R20, R21

Lumenlab design files

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

Lumenlab: common questions

What microcontroller does the Lumenlab use?

The Lumenlab is built around the ESP32-WROOM-32E, from the ESP32 family.

How big is the Lumenlab PCB?

The Lumenlab measures 99.9 × 80 mm, has 4 copper layers and is 1.600198 mm thick.

How many components are on the Lumenlab?

72 components, from 46 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 Lumenlab design files?

From the ericmcdaniel/lumenlab 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 Lumenlab design in my own project?

Yes, under the terms of its MIT license, which ericmcdaniel chose for the repository.

Can I test firmware for the Lumenlab 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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