Esphome fan controller
About the Esphome fan controller PCB
Esphome fan controller is an open source ESP32 PCB design by mikelawrence, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 25 × 42.5 mm, with 48 components from 31 distinct parts.
Its main chip is the ESP32-C3-MINI-1-N4X, from the ESP32 family. Other key parts include the MPM3506AGQV-P, TPS613222ADBVR, SN74LV1T34DBV and LM76202QPWPRQ1. By type, the board carries 15 resistors, 13 capacitors, 6 ICs, 6 diodes, 2 connectors and 2 switches.
It belongs with the iot & wireless designs in this gallery.
From the project
This is a simple ESP32-C3 based fan controller design to support 4-pin computer fans from 5V to 24V at up to 2 amps. Fan tachometer is supported.
This is a simple ESP32-C3 based fan controller design to support 4-pin computer fans from 5V to 24V at up to 2 amps. Fan tachometer is supported.
Rev -:** Ordered boards from JLCPCB. Ordered parts from Mouser and Digikey. Currently waiting to put everything together.
Main components on the Esphome fan controller
Esphome fan controller bill of materials (BOM)
48 components, 31 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MPM3506AGQV-P Monolithic Power Systems | QFN-19 | U1 |
| 1 | TPS613222ADBVR TPS613222ADBV Texas Instruments | SOT-23-5 | U2 |
| 1 | ESP32-C3-MINI-1-N4X ESP32-C3-MINI-1 Espressif Systems | ESP32-C3-MINI-1-N4X | U3 |
| 2 | SN74LV1T34DBV Texas Instruments | SOT-23-5 | U4, U5 |
| 1 | LM76202QPWPRQ1 LM76202-Q1 Texas Instruments | HTSSOP-16-1EP_4.4x5mm_P0.65mm_EP3.4x5mm_Mask2.66x2.46mm_ThermalVias | U6 |
| 1 | 47053-1000 Fan_CPU_4pin Molex | FanPinHeader_1x04_P2.54mm_Vertical | M1 |
| 1 | 1988956 Screw_Terminal_01x02 Phoenix Contact | 1984769 | J1 |
| 1 | 1332645 USB-C Phoenix Contact | HRO_TYPE-C-31-M-12 | J2 |
| 2 | B3U-1000P ~ Omron | SW_SPST_B3U-1000P-B | SW1, SW2 |
| 2 | TestPoint | TestPoint_THTPad_1.0x1.0mm_Drill0.5mm | TP1, TP2 |
| 2 | SS2FH6HM3/H Vishay | D_SMF | D1, D4 |
| 1 | ESDS452DBZR ESDS452 Texas Instruments | SOT-23 | D2 |
| 1 | USBLC6-2SC6 STMicroelectronics | SOT-23-6 | D3 |
| 1 | 4691 SK6812-4020 Adafruit | SK6812-4020 | D5 |
| 1 | SD36C-01FTG SD36C-01F Littelfuse | D_SOD-323 | D6 |
| 1 | MLP2012S1R0MT0S1 1uH TDK | L_0805_2012Metric | L1 |
| 1 | GRM155R71H223KA12J 22nF Murata | C_0402_1005Metric | C1 |
| 2 | MSASU21GBB5475KTNA01 4.7uF TAIYO YUDEN | C_0805_2012Metric | C2, C4 |
| 2 | MSASL21GBB5476MTNA01 47uF TAIYO YUDEN | C_0805_2012Metric | C3, C5 |
| 3 | CL05B104KB54PNC 100nF Samsung | C_0402_1005Metric | C6, C10, C12 |
Show 11 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | GRM188R60J226MEA0D 22uF Murata | C_0603_1608Metric | C7 |
| 2 | CL05A105KA5NQNC 1uF Samsung | C_0402_1005Metric | C8, C9 |
| 2 | CC0805MKY5V9BB105 1uF YAGEO | C_0805_2012Metric | C11, C13 |
| 1 | CRCW0402200KFKED 200KΩ Vishay / Dale | R_0402_1005Metric | R1 |
| 1 | RT0402BRD0775KL 75KΩ YAGEO | R_0402_1005Metric | R2 |
| 1 | RT0402BRD0724KL 24KΩ YAGEO | R_0402_1005Metric | R3 |
| 5 | CRCW040210K0FKED 10KΩ Vishay / Dale | R_0402_1005Metric | R4, R5, R6, R9, R15 |
| 3 | RT0402BRD075K1L 5.1KΩ YAGEO | R_0402_1005Metric | R7, R8, R13 |
| 2 | CRCW04021K0FKED 1kΩ Vishay / Dale | R_0402_1005Metric | R10, R11 |
| 1 | RT0402BRD07107KL 107KΩ YAGEO | R_0402_1005Metric | R12 |
| 1 | RT0402BRD075K23L 5.23KΩ YAGEO | R_0402_1005Metric | R14 |
Esphome fan controller design files
The KiCad project lives in the mikelawrence/esphome-fan-controller repository on GitHub; these links point at the commit this page was built from.
Esphome fan controller: common questions
What microcontroller does the Esphome fan controller use?
The Esphome fan controller is built around the ESP32-C3-MINI-1-N4X, from the ESP32 family.
How big is the Esphome fan controller PCB?
The Esphome fan controller measures 25 × 42.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Esphome fan controller?
48 components, from 31 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 Esphome fan controller design files?
From the mikelawrence/esphome-fan-controller 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 Esphome fan controller design in my own project?
Yes, under the terms of its CERN-OHL-P-2.0 license, which mikelawrence chose for the repository.
Can I test firmware for the Esphome 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.
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