---
title: "IoTFanControlerW5000"
url: "https://maker.wiznet.io/louis_m/projects/iotfancontrolerw5000/"
markdown_url: "https://maker.wiznet.io/louis_m/projects/iotfancontrolerw5000/md"
type: "UCC: User Created Content"
author: "jondurrant"
author_url: "https://github.com/jondurrant/IoTFanControlerW5000"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "jondurrant"
original_url: "https://github.com/jondurrant/IoTFanControlerW5000"
published: "2022-10-04"
language: "en"
likes: 8
views: 1234
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# IoTFanControlerW5000

> IOT Fan Controller based on RP2040 W5000 board from WizNet(WizNet W5100S Rp2040)

Original author: jondurrant (source: https://github.com/jondurrant/IoTFanControlerW5000)

## Article

IOT Fan Controller based on RP2040 W5000 board from WizNet([WizNet W5100S Rp2040](https://www.wiznet.io/product-item/w5100s-evb-pico/))

Controls PWM fan based on environment temperature read through a DS18B20 sensor. Uses three presets to select fan speed, and a night time override speed to reduce night time noise.

Device is based on my TwinThing framework (see [twinThingRP2040W5x00](https://github.com/jondurrant/twinThingRP2040W5x00) and [TwinThingPyMQTT](https://github.com/jondurrant/TwinThingPyMQTT)). The device does not persist status or configuration in flash memory but instead publishes its state to a MQTT shadow service, which can update the device to current configuration when it attaches to the network.

## **Hardware**

- [WizNet W5100S Rp2040](https://www.wiznet.io/product-item/w5100s-evb-pico/)

- RGB Common Cathode LED

- 3x Resistors 91R

- DS20B18 temperature sensor

- Resistor 4.7K

- RotaryEncoder with Push Switch

- 2x 10nF Capacitor for smoothing

- OLED display 128x32 SSD1306

- 2x 80mm 12V PWM controllable fans

## **Dependencies**

## **C++**

- [FreeRTOS-Kernel](https://github.com/FreeRTOS/FreeRTOS-Kernel): Task management

- [FreeRTOS-CoreMQTT-Agent](https://www.freertos.org/mqtt-agent/index.html): MQTT Library

- [ioLibary_Driver](https://github.com/Wiznet/ioLibrary_Driver): Drivers for W5100s

- [twinThingRP2040W5x00](https://github.com/jondurrant/twinThingRP2040W5x00)

- [json-maker](https://github.com/rafagafe/json-maker): JSON writing for comms

- [tiny-json](https://github.com/rafagafe/tiny-json): JSON parser

- [RP2040PIO-DS18B20](https://github.com/jondurrant/RP2040PIO-DS18B20): Sensor library

- [pico-ssd1306](https://github.com/daschr/pico-ssd1306): Oled Driver

- [RtosComponents](https://github.com/jondurrant/RtosComponents): Watchdog module

## **MQTT hub**

- [EMQX](https://www.emqx.io/)

## **MQTT Services**

- [TwinManager](https://github.com/jondurrant/TwinThingPyMQTT)

## **Folder Structur**

- src - source code for the project

- lib - libraries used by the project

- port - port code needed for the libraries used by the project

- patches - patch files produced by WizNet for the ioLibrary_Driver lib

- py - test python to interact with the IOT devices

- schematic - Circuit schematic (no PCB design as build on prototype board)

- 3dModels - STL files for PCB bracket, fan cover, OLED housing and Rotary Encoder housing

## **Clone and Build**

## **Clone**

''' git clone --recurse-submodules <https://github.com/jondurrant/IoTFanControlerW5000> '''

## **Build**

''' mkdir build cd build cmake .. make '''

---

Source: https://maker.wiznet.io/louis_m/projects/iotfancontrolerw5000/