HardLabs

Xiao esp32c6-smart fan

smicbee·xiao-esp32c6-smart-fan·hardware/xiao-esp32c6-smart-fan.kicad_sch

Xiao esp32c6-smart fan

About the Xiao esp32c6-smart fan PCB

Xiao esp32c6-smart fan is an open source ESP32 PCB design by smicbee, published on GitHub under the MIT license. It is a board, with 10 components from 9 distinct parts.

Its main chip is the XIAO ESP32C6, from the ESP32 family. By type, the board carries 4 resistors, 3 connectors, 2 switches and 1 battery holder.

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

From the project

Hardware-verified ESPHome retrofit for a 3-speed rechargeable fan using a Seeed XIAO ESP32C6, motor-voltage feedback, Home Assistant and OTA.

A hardware-verified retrofit that turns a simple three-speed rechargeable desk fan into a Wi-Fi/Home Assistant device without replacing its original motor, charger, protection circuit, or buttons.

The controller emulates the original active-low Power and Speed buttons, measures the real motor rail to identify Off/Stage 1/Stage 2/Stage 3, and converges from the freshly measured physical state to the latest requested state. Rapid commands are serialized by a generation-based worker instead of trusting delayed UI state.

Xiao esp32c6-smart fan bill of materials (BOM)

10 components, 9 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO ESP32C6
J1
1
FAN PCB PADS
J2
1
BMP280 BREAKOUT
J3
1
Fan battery
BT1
1
POWER (existing)
SW1
1
SPEED (existing)
SW2
1
150 kOhm
R1
1
22 kOhm
R2
2
220 kOhm
R3, R4

Xiao esp32c6-smart fan design files

The KiCad project lives in the smicbee/xiao-esp32c6-smart-fan repository on GitHub; these links point at the commit this page was built from.

Xiao esp32c6-smart fan: common questions

What microcontroller does the Xiao esp32c6-smart fan use?

The Xiao esp32c6-smart fan is built around the XIAO ESP32C6, from the ESP32 family.

How many components are on the Xiao esp32c6-smart fan?

10 components, from 9 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 Xiao esp32c6-smart fan design files?

From the smicbee/xiao-esp32c6-smart-fan repository on GitHub, which has the schematic and the BOM; the links under Design files point to each one.

Can I use the Xiao esp32c6-smart fan design in my own project?

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

Can I test firmware for the Xiao esp32c6-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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