Build a smart DIY fume extractor with an Adafruit FunHouse and CircuitPython. Use a PWM fan and the EMC2101 controller to change the speed based on readings from an SPG30 air quality sensor.

Learn Guide

https://learn.adafruit.com/funhouse-fume-extractor/

Project video by Liz

https://youtu.be/3rwHkWDBnlA

Use CircuitPython libraries and ESP32-S2 to connect to WiFi and log sensor data to a feed and display it on a dashboard with Adafruit IO. Use the FunHouse’s built-in TFT to display bitmap graphics with fan speed and air quality. Use the built-in buttons to select options like choosing to log data. CircuitPython makes it easy to customize features, experiment with other hardware and quickly iterate.

The electronics are housed in a 3D printed enclosure that snap fits together. Use a carbon activated filter to adsorb smoke from solder fumes. The fan controller and air quality sensor are connect with STEMMA QT cables for a plug-and-play circuit. A mini fan mounted in front of the air quality sensor directs fumes for sampling and measuring. The ports on the FunHouse make it easy to power 5V peripheral.

Adafruit FunHouse

https://www.adafruit.com/product/4985

EMC2101 Fan Controller

https://www.adafruit.com/product/4808

SGP30 Gas Sensor

https://www.adafruit.com/product/3709

Mini 5V Pi Fan

https://www.adafruit.com/product/3368

3D Hangouts – Fume Extractor, Jeopardy and Mini Vise

https://youtu.be/Z_rTnCOyZJ8

3D Hangouts – Trinkeys, Fans and Giant Switches

https://youtu.be/pD9igbZ1SCo

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