Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

CO2, temperature and humidity monitor

CO2, temperature and humidity monitor

An open source CO2 monitoring project from Roving Dynamics:

The project described below uses a MH-Z16 or MH-Z19 CO2 sensor and a DHT-22 (or DHT-11 if less accuracy is required) to measure the Temperature and Humidity. It has a 4 line by 20 character LCD Display to show the current readings and status, a warning alarm and two relays which can be triggered on a low CO2 (Generally above 1000 ppm) normally to switch on an extractor fan and a high level (4000 ppm) which will trigger a warning device such as an external alarm. There are two models I used the 0 to 5000 ppm device here but the code will be the same for the 0 to 10000 ppm model.

Project info at rodyne.com.

Read more Here







Related Pins

Solar LED Light ,20000mah  Li-ion battery , 24V solar panel with MPPT charge Controller
Solar LED Light ,20000mah Li-ion battery , 24V solar panel with MPPT charge Controller
Transfer of TI’s Wi-Fi® Alliance (WFA) Certifications to SimpleLink™ Wi-Fi CC3x00
Transfer of TI’s Wi-Fi® Alliance (WFA) Certifications to SimpleLink™ Wi-Fi CC3x00
DIY USB 5V Solar Power Pack
DIY USB 5V Solar Power Pack
Tutorial: DHT22 sensor with a PICmicro
Tutorial: DHT22 sensor with a PICmicro
BQ24650 Based MPPT li-ion Battery Chage Controller With Software MPPT adjust and 3 Channel LED P ...
BQ24650 Based MPPT li-ion Battery Chage Controller With Software MPPT adjust and 3 Channel LED PWM dimming.
Play beautiful music on an Arduino thumb piano
Play beautiful music on an Arduino thumb piano
Kids can build these circuits
Kids can build these circuits
40 dB attenuator
40 dB attenuator
A multimeter heads-up display with Arduino glasses
A multimeter heads-up display with Arduino glasses
Robotic fish swims under Arduino control
Robotic fish swims under Arduino control
Arduino Xylophone
Arduino Xylophone
MPPT Solar Charger Testing
MPPT Solar Charger Testing
Design and Application Guide of Bootstrap Circuit for High-Voltage Gate-Drive IC
Design and Application Guide of Bootstrap Circuit for High-Voltage Gate-Drive IC
ESLOV is the amazing new IoT invention kit from Arduino
ESLOV is the amazing new IoT invention kit from Arduino
μPC1237 based 2 channel speaker protector
μPC1237 based 2 channel speaker protector
ESP8266 WeatherStation Color
ESP8266 WeatherStation Color
Keyless piano project using Arduino uno
Keyless piano project using Arduino uno
IoT Wardrobe
IoT Wardrobe
Automotive CAN Transceivers
Automotive CAN Transceivers
Restoring a vintage Xerox Alto day 8: it boots!
Restoring a vintage Xerox Alto day 8: it boots!

Top


Shares