4 layers48 × 32.3 mm
FrontPanel
mrspieb/HW-FanControl
Everything required to build the PCB and case of the ventilation fan controller
17 partsGPL-3.0
4 layers48 × 84 mm
FanControlHW
mrspieb/HW-FanControlEverything required to build the PCB and case of the ventilation fan controller
- Size
- 48 × 84 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 84
- Nets
- 93
- Pads
- 311
- Tracks, vias
- 618, 135
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Jan 2026
- Updated
- 25 Jan 2026
Overview
FanControlHW is an open-source printed circuit board by mrspieb, from the mrspieb/HW-FanControl repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 48 × 84 mm with 84 parts on 93 nets, routed with 618 tracks and 135 vias.
It is built around the RP2040, W25Q128JVSIM and AMS1117-3.3, with the GZ1608D601TF, BAT42WS and SS24 among its other parts. Its parts include 34 capacitors, 16 resistors, 9 ICs, 6 diodes and 6 connectors. It belongs with the RP2040 boards of this library.
Main components
9
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q128JVSIM
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 10uA 128Mbit 133MHz 2.7V~3.6V 20 Years 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbond ElecNOR FLASH
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
GZ1608D601TF
0603-55℃~+125℃ 1 200mA 450mΩ 600Ω@100MHz ±25% 0603 Ferrite Beads ROHSSunlordFerrite Beads
BAT42WS
SOD-323Schottky Diodeshongjiacheng
SS24
SMA(DO-214AC)-55℃~+150℃ 200uA@40V 2A 40V 50A 550mV@2A Independent SMA(DO-214AC) Schottky Diodes ROHShongjiachengSchottky Diodes
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystalsSMAJ40CA
DO-214AC(SMA)ESD And Surge Protection (TVS/ESD)hongjiachengSS16
SMA(DO-214AC)-55℃~+150℃ 100uA@60V 1A 60V 700mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSFUXINSEMISchottky Diodes
README
README.mdFan Controller Hardware Project
Overview
This project contains the hardware design for a fan controller, including PCB designs and 3D printable parts.
Application
The device is designed to drive ventilation fans using a 12V power supply and a 5V PWM signal for control.
The main application is to replace a MAICO RLS45 which controls PPB30 and PP45 decentral ventilation systems.
Installation
- Connect a 12V 2A source to the lower left connectors
- Connect to the KNX bus on the lower right connector
- Connect the fans to the top connector according to the fan installation manual. There connections on the top from left to right are: Fan1 (12V, GND, S1, S2), Fan2 (12V, GND, S1, S2)
PCB Designs
Base PCB
The PCB is able to switch the 12V supply for each fan. In the original RLS45 the 12V line is permanently connected. Close J1 and J2 if you want to do the same the same.
Front Panel PCB
Assembly
Fan Controller
Parts
84| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100n | Capacitor_SMD:C_0402_1005Metric | C11, C13, C14, C19, C21, C22, C23, C25, C26, C28 |
| 4 | 150 | Resistor_SMD:R_0402_1005Metric | R7, R11, R12, R13 |
| 4 | 1nF | Capacitor_SMD:C_0402_1005Metric | C20, C30, C31, C32 |
| 4 | GZ1608D601TF | easyeda2kicad:L0603 | L3, L4, L5, L6 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1, H2, H3, H4 |
| 3 | 100nF/50V | Capacitor_SMD:C_0402_1005Metric | C3, C5, C6 |
| 2 | 10pF/6.3V | Capacitor_SMD:C_0402_1005Metric | C8, C9 |
| 2 | 10µF/35V | Capacitor_SMD:C_0805_2012Metric | C10, C29 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C12, C102 |
| 2 | 1K | Resistor_SMD:R_0402_1005Metric | R3, R102 |
| 2 | 1R | Resistor_SMD:R_0402_1005Metric | R2, R8 |
| 2 | 1u | Capacitor_SMD:C_0402_1005Metric | C24, C27 |
| 2 | 1µF | Capacitor_SMD:C_0402_1005Metric | C7, C17 |
| 2 | 22 | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | 220µH | Inductor_SMD:L_Changjiang_FNR6045S | L1, L2 |
| 2 | 22µF/10V(20%) | Capacitor_SMD:C_0805_2012Metric | C15, C16 |
| 2 | BAT42WS | Diode_SMD:D_SOD-323 | D4, D5 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3, J6 |
| 2 | SS24 | Diode_SMD:D_SMA | D3, D6 |
| 2 | Screw_Terminal_01x04 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-4-5.08_1x04_P5.08mm_Horizontal | J2, J5 |
| 2 | TPS22810DRVR | easyeda2kicad:WSON-6_L2.0-W2.0-P0.65-TL-EP | U6, U10 |
| 1 | 100nF/50V | Capacitor_SMD:C_0603_1608Metric | C18 |
| 1 | 100µF/35V | Capacitor_SMD:CP_Elec_6.3x7.7 | C4 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric | R10 |
| 1 | 10k / 1% | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 16Mhz/X322516MLB4SI | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | X1 |
| 1 | 220 | Resistor_SMD:R_0402_1005Metric | R106 |
| 1 | 220nF/50V | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 220pF | Capacitor_SMD:C_0402_1005Metric | C105 |
| 1 | 27R/1W | Resistor_SMD:R_2512_6332Metric | R1 |
| 1 | 2k2 | Resistor_SMD:R_0402_1005Metric | R105 |
| 1 | 33K | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 47nF/50V | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | ABM8-272-T3 | MyPartsLibrary:ABM8-272-T3_ABR | X2 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | Conn_01x02_Pin | MyPartsLibrary:Wago-243-131 | J4 |
| 1 | FPC1.0MM;10PH2.5MM | easyeda2kicad:FPC-SMD_FPC1.0-2-10P | FPC2 |
| 1 | KNX GND | MyPartsLibrary:KNX_Pin | U9 |
| 1 | KNX+ | MyPartsLibrary:KNX_Pin | U8 |
| 1 | NCN5130 | MyPartsLibrary:QFN-40_L6.0-W6.0-P0.50-BL-EP | U2 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | SMAJ40CA | Diode_SMD:D_SMA | D8 |
| 1 | SN74LVC125ARGYR | easyeda2kicad:VQFN-14_L3.5-W3.5-P0.50-BL-EP2.0 | U7 |
| 1 | SS16 | Diode_SMD:D_SMA | D1 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-2-5.08_1x02_P5.08mm_Horizontal | J1 |
| 1 | W25Q128JVSIM | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U4 |
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Questions
How big is the FanControlHW PCB?
It measures 48 × 84 mm and has 4 copper layers, 1.6 mm thick.
What parts does the FanControlHW use?
84 parts, built around the RP2040, W25Q128JVSIM, AMS1117-3.3 and GZ1608D601TF. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the FanControlHW KiCad files?
From the mrspieb/HW-FanControl repository on GitHub, at the commit this page was made from: the board is KiCAD/FanControlHW.kicad_pcb and its schematic KiCAD/FanControlHW.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the FanControlHW design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).