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Full machine-readable index: https://core-electronics.com.au/llms.txt # Adafruit CCS811 Air Quality Sensor Breakout - VOC and eCO2 **Type:** Product page · **SKU:** ADA3566 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/adafruit-ccs811-air-quality-sensor-breakout-voc-and-eco2.html ([markdown](https://core-electronics.com.au/adafruit-ccs811-air-quality-sensor-breakout-voc-and-eco2.html.md)) Breathe easy - we finally have an I2C VOC/eCO2 sensor in the Adafruit shop! Add air quality monitoring to your project and with an Adafruit CCS811 Air Quality Sensor... ## Pricing - **Price:** $34.20 (inc GST) — $31.09 AUD, exc GST - **Quantity discounts:** 10+ $30.15 (exc GST) · 50+ $29.54 (exc GST) ## Availability & dispatch - Out of stock — the product page offers email notification when it returns. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA3566:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA3566:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description Breathe easy - we finally have an I2C VOC/eCO2 sensor in the Adafruit shop! Add air quality monitoring to your project and with an **Adafruit CCS811 Air Quality Sensor Breakout**. This sensor from AMS is a gas sensor that can detect a wide range of Volatile Organic Compounds (VOCs) and is intended for indoor air quality monitoring. When connected to your microcontroller (running Adafruit's library code) it will return a Total Volatile Organic Compound (TVOC) reading and an equivalent carbon dioxide reading (eCO2) over I2C. There is also an onboard thermistor that can be used to calculate the local ambient temperature. The CCS811 has a 'standard' hot-plate MOX sensor, as well as a small microcontroller that controls power to the plate, reads the analog voltage, and provides an I2C interface to read from. This part will measure **eCO2** (equivalent calculated carbon-dioxide) concentration within a range of 400 to 8192 parts per million (ppm), and **TVOC** (Total Volatile Organic Compound) concentration within a range of 0 to 1187 parts per billion (ppb). According to the fact sheet it can detect Alcohols, Aldehydes, Ketones, Organic Acids, Amines, Aliphatic and Aromatic Hydrocarbons. Adafruit include a 10K NTC thermistor with matching balancing resistor which can be read by the CCS811 to calculate approximate temperature. **Please note, this sensor, like all VOC/gas sensors, has variability and to get precise measurements you will want to calibrate it against known sources!** That said, for general environmental sensors, it will give you a good idea of trends and comparisons.Also, AMS recommends that you run this sensor for 48 hours when you first receive it to "burn it in", and then 20 minutes in the desired mode every time the sensor is in use. This is because the sensitivity levels of the sensor will change during early use. Finally, this chip uses I2C clock stretching, and some microcontrollers/computers don't support that (e.g. Raspberry Pi) The CCS811 has a configurable interrupt pin that can fire when a conversion is ready and/or when a reading crosses a user-settable threshold. The CCS811 supports multiple drive modes to take a measurement every 1 second, every 10 seconds, every 60 seconds, or every 250 milliseconds. For your convenience Adafruit have pick-and-placed the sensor on a PCB with a 3.3V regulator and some level shifting so it can be easily used with your favorite 3.3V or 5V microcontroller. Adafruit have also prepared software libraries to get you up and running in Arduino IDE or CircuitPython with just a few lines of code! [Check out Adafruit's tutorial for more information!](https://learn.adafruit.com/adafruit-ccs811-air-quality-sensor) ## Technical Details - [Software libraries, hookup guide, datasheets, schematic, EagleCAD PCB files, and Fritzing available in the product tutorial!](https://learn.adafruit.com/adafruit-ccs811-air-quality-sensor) - Uses I2C address 0x5A Product Dimensions: 21.0mm x 18.0mm x 3.0mm / 0.8" x 0.7" x 0.1" Product Weight: 1.2g / 0.0oz - [CCS881 Datasheet](https://core-electronics.com.au/attachments/localcontent/3566_datasheet_536336ae208.pdf) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/3/5/3566-00.jpg)