Smart Fume Extractor

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.

Adafruit IO & Data Logging

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.

Fun Features

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.

Parts to build this project.

• FunHouse ESP32-S2
• Noctua PWM Fan - 140mm
• 5V Mini Fan
• EMC12101 PWM Fan Controller
• SGP30 Air Quality Sensor
• STEMMA QT Cable - 200mm
• STEMMA QT Cable - 100mm
• Carbon Filter
• M2.5 Hardware Kit
• M3 Hardware Kit