News — Sensor

The engineers here at CO2Meter have developed application notes for SenseAir’s S8 small-footprint CO2 sensor. These app notes with source code make it easy to communicate with the S8 using two of the most popular microcontrollers on the market today. Learn more about the S8 CO2 sensor. AN168: Raspberry Pi to SenseAir S8 CO2 Sensor via UART Download AN168 here. Download the source files here. the Raspberry Pi 3 is a popular credit card-sized computer used in many maker applications. The documentation and included python source code files make it easy for even first-time users to communicate with the S8...

Customers using SenseAir's K-30 CO2 sensor with an Arduino micro controller or the Raspberry Pi occasionally see the sensor "lock up" during use. It appears that the sensor sends negative data and quits working. After unplugging the sensor from power momentarily, it works again. This seems to be a random problem. Fortunately, we have been able to recreate the problem, and have several solutions. Low Power The most common issue is power. 5VDC is the absolutely required minimum voltage. If you are powering from a USB port, the nominal 5.25V will drop with other USB devices on the circuit, causing an error. If...

Our engineers have created application notes to connect two of CO2Meter’s most popular CO2 sensors with the popular Raspberry Pi. The Raspberry Pi is a credit-card-sized computer that plugs into a monitor and keyboard. It makes it easy for hobbyists to create projects for a very low cost. COZIR CO2 Sensor This app note AN-127 explains how to connect the Raspberry Pi 3 with the COZIR CO2 sensor via UART. Includes step by step instructions. AN127 Instructions here (pdf). AN127 project source code here (zip). K-30 CO2 Sensor This app note AN-137 explains how to connect the Raspberry Pi 3 with...

Reading CO2 and oxygen levels in remote areas can be challenging. That's why we were excited to see CO2Meter’s S8 CO2 sensor and UV Flux oxygen sensor installed on a drone for high-altitude atmospheric testing. The project is the brainchild of RYF Technologies.  Last year, they began testing CO2 sensors to create a handheld CO2 monitor for the Chilean market. A requirement for the new monitor was that it used a built-in barometric sensor to automatically adjust the CO2 level for extreme changes in altitude in the Andes Mountains. The monitor uses a built-in micro pump to quickly change the...