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Kicad duct turbo fan controller

scattym·kicad-duct-turbo-fan-controller·duct-turbo-fan-controller-v4/duct-turbo-fan-controller-v4.kicad_pcb

Kicad duct turbo fan controller PCB layout, top view — open source ESP32 board by scattym
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About the Kicad duct turbo fan controller PCB

Kicad duct turbo fan controller is an open source ESP32 PCB design by scattym, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 42.7 × 48.8 mm, with 46 components from 31 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the SCD41-D-R2, BME680 and AOZ1282CI-1. By type, the board carries 16 resistors, 11 capacitors, 5 connectors, 5 diodes, 4 ICs and 2 transistors.

It belongs with the iot & wireless and sensors designs in this gallery, and the repository also holds 3 earlier revisions of it.

From the project

Fan controller projects for the duct turbo, terrabloom and ac infinity fans

Simple project marrying up 3 premade boards, the esp32 doit v2, a buck-boost board and a scd41 board.

Connects to the ducturbo 3.5mm to PWM control the fan speed.

Low side mosfet PWM chosen so that removal (or potentially failure) of the esp32 keeps the fan off.

Board will also work with the AC Infinity fans however there seems to be in internal 10k resistor on these fans, so changing R5 from 10K to 1K is needed to get the "off" voltage down to under 1 volt. With the following pins:

Main components on the Kicad duct turbo fan controller

SCD41-D-R2BME680ESP32-C3-WROOM-02AOZ1282CI-1

Kicad duct turbo fan controller bill of materials (BOM)

46 components, 31 distinct parts.

QtyPartRefs
1
SCD41-D-R2
U1
1
BME680
U2
1
ESP32-C3-WROOM-02
U3
1
AOZ1282CI-1
U5
1
MMBT3904
Q1
1
BSS84
Q2
1
Screw_Terminal_01x04
J1
2
Conn_01x04
J2, J7
1
USB_OTG
J3
1
AudioJack4
J4
2
SW_Push
SW1, SW2
1
12V Zener
D1
2
PMEG4005EGWX
D2, D3
1
LED Green
D4
1
LED Red
D5
1
2.2uH
L1
1
10uF
C1
1
100uF
C2
2
1uF
C3, C10
3
0.1uF
C4, C5, C8
Show 11 more
QtyPartRefs
2
0.1uF
C6, C11
2
10uF X7R
C7, C9
5
10K
R1, R3, R5, R7, R14
1
2.2k
R2
1
3.3k
R4
2
10K
R6, R8
1
1K
R9
2
4.7k
R10, R11
1
49.9K
R12
1
15.8K
R13
2
1k
R15, R16

Kicad duct turbo fan controller design files

The KiCad project lives in the scattym/kicad-duct-turbo-fan-controller repository on GitHub; these links point at the commit this page was built from.

Kicad duct turbo fan controller: common questions

What microcontroller does the Kicad duct turbo fan controller use?

The Kicad duct turbo fan controller is built around the ESP32-C3-WROOM-02, from the ESP32 family.

How big is the Kicad duct turbo fan controller PCB?

The Kicad duct turbo fan controller measures 42.7 × 48.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Kicad duct turbo fan controller?

46 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Kicad duct turbo fan controller design files?

From the scattym/kicad-duct-turbo-fan-controller repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Kicad duct turbo fan controller design in my own project?

Yes, under the terms of its GPL-3.0 license, which scattym chose for the repository.

Can I test firmware for the Kicad duct turbo fan controller 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.

Earlier revisions in the repo: duct-turbo-fan-controller-v3, duct-turbo-fan-controller-v2, duct-turbo-fan-controller

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