Embedded Lab

BME280 is a fully integrated environmental unit from Bosch that combines sensors for pressure, humidity, and temperature in a tiny 8-pin metal-lid LGA package of size 2.5 x 2.5 x 0.93 mm³. Because of its compact size, ease of use (BME280 supports standard I2C and SPI interfaces), and availability of supporting open-source Arduino libraries, BME280 is very popular among weather enthusiasts. We have seen its usage in our weather webserver project and standalone weather station tutorial before. This Instructable describes a similar weather station based on ESP8266 and BME280 and is solar-powered. The entire circuit is housed inside a 3-D printed enclosure.