An air quality measurement board to be used as HAT on top of the Raspberry Pi B+.
It should be easy to use thanks to the on-board labeling of all headers.
It can measure air...
- pressure (via BMP180 module board "GY-68" or compatible)
- and volatile organic compounds (VOC) via four MQ gas sensor slots of your choice
Additionally it can drive WS1812B LEDs...
A Mini weather station based on ESP-12. Include a BME280 or BME680 sensor chip on board, one or more DS18B20 onewire sensors. It's powered by a Lithium cell, can be for short time directly charged over present voltage input. A LDO with very low Iq included. Comes with voltage measurement for the connected battery. Hardware jumper for deep-sleep and a programming connector (charge the battery if +5...