HardLabs

Lune

Birkemosen·lune·hardware/heatvalve-6-rev2.1/heatvalve-6-rev2.1.kicad_pcb

Lune PCB layout, top view — open source ESP32 board by Birkemosen

About the Lune PCB

Lune is an open source ESP32 PCB design by Birkemosen, published on GitHub under the CC-BY-NC-4.0 license. It is a 4-layer board measuring 120 × 75 mm, with 128 components from 61 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N16R8, from the ESP32 family. Other key parts include the USBLC6-2SC6, MT2492, INA180A1IDBVR, MCP6004-I/SL and LM339BDR. By type, the board carries 52 resistors, 36 capacitors, 15 ICs, 11 connectors, 7 diodes and 2 switches.

It belongs with the robotics & motion, iot & wireless and test & measurement designs in this gallery.

From the project

Lune V6 - local 6-zone hydronic underfloor-heating manifold controller. ESPHome on ESP32-S3 with 3x DRV8411, hardware one-hot channel select, shared high-side current sense and commutation-ripple position learning.

Editable KiCad 10 design for the USB-C-powered, six-channel DRV8837 HeatValve controller.

- Schematic: complete first electrical-review revision; KiCad ERC reports 0 errors. - PCB: compact four-layer 120 x 75 mm placement review with 128 electrical footprints, two M3 holes, an antenna notch, GND/+3V3 inner planes, and an intentionally unrouted ratsnest. - Fabrication status: not released. Routing, mechanical confirmation, and final footprint/availability review are still required. - PCB DRC: not current; KiCad CLI 10.0.3 aborts on both the original and updated board. See drc.rpt and rerun…

Main components on the Lune

ESP32-S3-WROOM-1-N16R8USBLC6-2SC6MT2492INA180A1IDBVRMCP6004-I/SLLM339BDR74HC7474HC4051PWDRV8837DSGR

Lune bill of materials (BOM)

128 components, 61 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-WROOM-1-N16R8
U1
1
USBLC6-2SC6
U2
1
MT2492
U3
1
INA180A1IDBVR
INA180A1 (x20)
U9
1
MCP6004-I/SL
MCP6004
U10
1
LM339BDR
LM339B
U11
1
74HC74
U12
2
74HC4051PW
74HC4051
U13, U14
6
DRV8837DSGR
U21, U22, U23, U24, U25, U26
1
USB4105-GF-A
J1
1
5301-4P4C
MOTOR 1 4P4C
J2
1
5301-4P4C
MOTOR 2 4P4C
J3
1
5301-4P4C
MOTOR 3 4P4C
J4
1
5301-4P4C
MOTOR 4 4P4C
J5
1
5301-4P4C
MOTOR 5 4P4C
J6
1
5301-4P4C
MOTOR 6 4P4C
J7
1
ONEWIRE 1
J8
1
ONEWIRE 2
J9
1
ONEWIRE 3
J10
1
I2C EXPANSION DNP
J11
Show 41 more
QtyPartRefs
1
1206L050
500mA PTC
F1
1
1.0R 1206 1%
1.0R 1%
RSH1
1
DNP
RSH2
1
RESET
SW1
1
BOOT
SW2
1
USB
D1
1
PWR
D2
1
FAULT
D3
1
PERMIT
D4
1
BAT54S ADC clamp
D5
1
PESD3V3U1UL
D6
1
BAT54S BEMF ADC clamp
D7
1
600R@100MHz
FB1
1
4.7uH / >=2.4A
L1
1
10u
C1
17
100n
C2, C8, C9, C11, C12, C19, C20, C21 +9
1
100u
C3
1
22n
C4
2
22u
C5, C6
2
10u
C7, C10
2
4.7n
C13, C52
3
1u
C14, C17, C18
6
1u
C31, C33, C35, C37, C39, C41
1
100n DNP
C54
2
5.1k
R1, R2
2
22R
R3, R4
1
115k
R5
1
25.5k
R6
21
10k
R7, R8, R15, R16, R23, R26, R28, R56 +13
4
2.2k
R9, R10, R11, R12
1
0R
R13
3
1k
R14, R25, R54
1
18k
R24
6
100k
R27, R55, R57, R60, R61, R62
1
47k
R29
1
33R
R40
1
4.7k
R41
2
2.2k DNP
R42, R43
2
90.9k 1%
R50, R52
2
47k 1%
R51, R53
1
1M
R58

Lune design files

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

Lune: common questions

What microcontroller does the Lune use?

The Lune is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.

How big is the Lune PCB?

The Lune measures 120 × 75 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Lune?

128 components, from 61 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 Lune design files?

From the Birkemosen/lune 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 Lune design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Lune 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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