HardLabs

Smart fan

ben-willis·smart-fan·hardware/smart-fan.kicad_pcb

Smart fan PCB layout, top view — open source ESP32 board by ben-willis
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About the Smart fan PCB

Smart fan is an open source ESP32 PCB design by ben-willis, published on GitHub. It is a 2-layer board measuring 109.3 × 80 mm, with 34 components from 24 distinct parts.

Its main chip is the ESP32-S3-MINI-1U, from the ESP32 family. Other key parts include the AP7361C-33E and TSOP382XX. By type, the board carries 11 resistors, 10 LEDs, 3 ICs, 3 capacitors and 2 connectors.

It belongs with the iot & wireless and retro computing designs in this gallery.

From the project

ESP32-S3 smart fan retrofit with custom KiCad hardware and ESPHome firmware. Wi-Fi + Home Assistant control, OTA updates, and UART protocol support for upgrading legacy fan controllers.

A WiFi-enabled smart fan controller built on ESP32-S3 with Home Assistant integration, using ESPHome for firmware management.

This project transforms a traditional fan into a smart, connected device with the following capabilities: - WiFi Connectivity: ESP32-S3 microcontroller for wireless control - Home Assistant Integration: Full API integration for home automation - Physical Controls: GPIO-based buttons for manual operation - IR Remote Support: NEC protocol infrared remote control - Advanced Features: 3-speed control, oscillation mode, preset modes (Sleep, Nature, Normal) - Custom PCB…

Main components on the Smart fan

ESP32-S3-MINI-1UAP7361C-33ETSOP382XX

Smart fan bill of materials (BOM)

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

QtyPartRefs
1
ESP32-S3-MINI-1U
ESP32-S3-Mini-1U
U1
1
AP7361C-33E
U2
1
TSOP382XX
TSOP382xx
U3
1
CONN_01X04_PIN
Conn_01x04_Pin
J1
1
CONN_01X02
Conn_01x02
J3
1
C455119
TIMER
KEY2
1
C455119
SW
KEY3
1
C455119
MODE
KEY4
1
C455119
SPEED
KEY5
1
C455119
ON/OFF
KEY6
1
C330760
0.5H
LED1
1
C330760
1H
LED2
1
C330760
2H
LED3
1
C330760
4H
LED4
1
C330760
NOR
LED5
1
C330760
RHY
LED6
1
C330760
SLP
LED7
1
C330760
L
LED8
1
C330760
M
LED9
1
C330760
H
LED10
Show 4 more
QtyPartRefs
2
1UF
1uF
C2, C4
1
4.7UF
4.7uF
C3
1
10K
10k
R1
10
100
R3, R4, R5, R6, R7, R8, R9, R10 +2

Smart fan design files

The KiCad project lives in the ben-willis/smart-fan repository on GitHub; these links point at the commit this page was built from.

Smart fan: common questions

What microcontroller does the Smart fan use?

The Smart fan is built around the ESP32-S3-MINI-1U, from the ESP32 family.

How big is the Smart fan PCB?

The Smart fan measures 109.3 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Smart fan?

34 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 Smart fan design files?

From the ben-willis/smart-fan 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 Smart fan design in my own project?

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

Can I test firmware for the Smart fan 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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