HardLabs

LSW5-ESP32

mwdmwd·lsw5-esp32

LSW5-ESP32 PCB layout, top view — open source ESP32 board by mwdmwd

About the LSW5-ESP32 PCB

LSW5-ESP32 is an open source ESP32 PCB design by mwdmwd, published on GitHub. It is a 2-layer board measuring 35 × 52 mm, with 36 components from 25 distinct parts.

Its main chip is the ESP32-S3-WROOM-1U, from the ESP32 family. Other key parts include the LD1117S33TR_SOT223 and ISO1410DWR. By type, the board carries 13 resistors, 8 capacitors, 5 connectors, 5 diodes, 3 ICs and 1 transistor.

It belongs with the iot & wireless, power & battery and sensors designs in this gallery.

From the project

ESP32-based replacement PCB for the Deye/Sofar/Igen/Solarman/... LSW-5 Stick Logger with RS-485

This is a replacement ESP32-S3 daughterboard for the "LSW-5" Stick Logger (FCC ID 2A4FRLSW-5).

It replaces the original board, which is based on a Hi-Flying HF-LPT270 [^lpt270] (BL602 inside[^lpt270-why-not]). With an ESP32-S3, it enables ESPHome support while keeping the Stick Logger's modern, minimalistic appearance intact[^rs485-hole].

Target Device: LSW-5 Stick Logger, FCC ID: 2A4FRLSW-5 and others (for example, mine, which does not have an FCC ID printed on it). May also fit the 2BC8DLSW-5 (not verified, no internal photos), or other types of Stick Logger. If your Stick Logger looks…

LSW5-ESP32, from the project README
From the project README

Main components on the LSW5-ESP32

ESP32-S3-WROOM-1ULD1117S33TR_SOT223ISO1410DWR

LSW5-ESP32 bill of materials (BOM)

36 components, 25 distinct parts.

QtyPartRefs
1
ESP32-S3-WROOM-1U
U1
1
LD1117S33TR_SOT223
U2
1
ISO1410DWR
U3
1
AO3407A
Q1
1
Conn_02x03_Odd_Even
J1
1
Conn_01x04_Pin
J2
1
USB4105-GF-A
J3
1
Conn_02x05_Odd_Even
J4
1
Conn_01x04
J6
1
Conn_01x06_Pin
J_EXP1
1
1N5819HW-7-F
D1
1
NET
D2
1
RDY
D3
1
COM
D4
1
SM712_SOT23
D5
3
100n
C1, C5, C7
1
22μ
C2
2
1μ
C3, C6
2
10μ
C4, C8
4
10k
R1, R2, R5, R10
Show 5 more
QtyPartRefs
1
120
R3
1
1k
R4
2
0
R6, R13
3
470
R7, R8, R9
2
5k1
R11, R12

LSW5-ESP32 design files

The KiCad project lives in the mwdmwd/lsw5-esp32 repository on GitHub; these links point at the commit this page was built from.

LSW5-ESP32: common questions

What microcontroller does the LSW5-ESP32 use?

The LSW5-ESP32 is built around the ESP32-S3-WROOM-1U, from the ESP32 family.

How big is the LSW5-ESP32 PCB?

The LSW5-ESP32 measures 35 × 52 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LSW5-ESP32?

36 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the LSW5-ESP32 design files?

From the mwdmwd/lsw5-esp32 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the LSW5-ESP32 design in my own project?

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

Can I test firmware for the LSW5-ESP32 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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