MH-Z19B is an intelligent infrared CO2 module which interacts with the Raspberry Pi using UART (universal asynchronous receiver-transmitter). Takuya uses the UART port on ANAVI Infrared pHAT to attach MH-Z19B. The rest of the sensor modules for his setup are included in ANAVI Infrared pHAT Advanced kit: HTU21D for temperature and humidity, BMP180 for barometric pressure and BH1750 for light.
By the way, initially we had published open source examples for using HTU21D, BMP180 and BH1750 in the C programming languages using the library wiringpi. Takuya also based his setup on wiringpi. However, wiringpi is now deprecated therefore we have replaced it with another library called libi2c-dev. Furthermore we added examples written in Python 3.
Jesús has attached various sensors for collecting data as we as a Raspberry Pi camera to take pictures of the room. He has developed energy efficiency algorithms running in the cloud which make decisions based on the data from the sensor and after that ANAVI Infrared pHAT takes care for transmitting commands as a stream of infrared signals to his air conditioner.
Morten Mathiasen, a highly skilled professional with 25 years of experience in software development and teaching, implemented an open source solution for HVAC control with Raspberry Pi, HTU21D temperature and humidity I2C sensor module as well as our open source hardware ANAVI Infrared pHAT. He recently shared details in a Crowd Supply Field Report.
To save energy and to reduce global warming in his vacation house, Morten turns off the Panasonic HVAC system when his family is not there. Unfortunately, as a result next time when he arrives at the vacation house, it is too cold in the winter and too hot in the summer. It then takes up to 24 hours to get a comfortable temperature in the house.
To solve this problem, Morten wrote in the C programming language a Home Assistant-based system that uses a Raspberry Pi with ANAVI Infrared pHAT to make an internet-connected remote control. Now, he can turn on the system remotely 24 hours before arriving to ensure a comfortable temperature.
Michel runs a local Apache2 web server on the Raspberry Pi Zero W and the Infrared pHAT can record and play back the infrared signals from any brand of remote control using the popular open source software Linux Infrared Remote Control (LIRC). He shared details in Crowd Supply and GitHub.
Furthermore Michel crafted a fantastic wooden box and shared with us a couple of photos!
ANAVI Infrared pHAT is an open source hardware add-on board that converts your Raspberry Pi into a smart remote control that can bring your old consumer electronic devices, like air conditioning, TV, set top boxes and Hi-Fi systems to the Internet of Things (IoT) era.