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Fan controller

ferrybig·70w-fan-controller·pcb/Fan controller.kicad_pcb

Fan controller PCB layout, top view — open source AVR/Arduino board by ferrybig

About the Fan controller PCB

Fan controller is an open source AVR/Arduino PCB design by ferrybig, published on GitHub. It is a 2-layer board measuring 60 × 60 mm, with 46 components from 28 distinct parts.

Its main chip is the ATmega328P-P, from the AVR/Arduino family. Other key parts include the USBLC6, TPS3808G50 and FT232RL. By type, the board carries 12 capacitors, 11 connectors, 7 ICs, 7 resistors, 4 diodes and 2 transistors.

It belongs with the sensors and displays & leds designs in this gallery.

From the project

A PlatformIO project for Arduino Uno that implements an intelligent fan controller with sensor monitoring, real-time clock, and OLED display.

A PlatformIO project for Arduino Uno that implements an intelligent fan controller with sensor monitoring, real-time clock, and OLED display.

- Potentiometer-based fan speed control with auto-calibration - Real-time environmental monitoring (temperature, humidity, pressure) - DS3231 RTC with battery backup for timekeeping - 128x64 SPI OLED display for status information - Fan tachometer (RPM) monitoring - Input voltage monitoring - USB power detection - Auxiliary fan output control - Serial command interface for configuration - Multiple fan modes: Auto, Off, On, Safe Mode - EEPROM…

Main components on the Fan controller

USBLC6ATmega328P-PTPS3808G50FT232RL

Fan controller bill of materials (BOM)

46 components, 28 distinct parts.

QtyPartRefs
4
USBLC6
U2, U4, U5, U6
1
ATmega328P-P
U3
1
TPS3808G50
U7
1
FT232RL
U8
2
2N7000
Q1, Q3
1
16M
Y1
1
Secondary connector
J1
1
USB-B
J2
1
RTC_module
J3
1
Main connector
J4
1
Temp sensor
J5
2
Extra i2c bus
J6, J11
1
Oled module
J7
1
Aux fan
J8
1
SMPS module
J9
1
AVR-ISP-6
J10
1
sense_vin
JP1
1
rst_bypass
JP2
1
blue
D1
2
30V
D2, D6
Show 8 more
QtyPartRefs
1
1N4148
D3
2
1u
C1, C3
8
0u1
C2, C4, C5, C6, C7, C8, C9, C12
2
22p
C10, C11
1
4.7k
R1
3
10k
R2, R4, R6
2
1k
R3, R7
1
38k
R5

Fan controller design files

The KiCad project lives in the ferrybig/70w-fan-controller repository on GitHub; these links point at the commit this page was built from.

Fan controller: common questions

What microcontroller does the Fan controller use?

The Fan controller is built around the ATmega328P-P, from the AVR/Arduino family.

How big is the Fan controller PCB?

The Fan controller measures 60 × 60 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fan controller?

46 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the Fan controller design files?

From the ferrybig/70w-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 Fan controller design in my own project?

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

Can I test firmware for the Fan controller without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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