GY-BME280-5V Temperature and Humidity Sensor

There is a lot of confusion in the market about the BME280. There is a cheaper sibling in the BMP280, but importantly does not measure humidity that the BME280 does. The one from Tomson ticks all the specification boxes for the BME280, and measures temp, humidity, pressure and altitude. So spec-wise - perfect. The one from Tomson is a 4-pin version and so only i2c bus is supported. There are 6 pin versions out there which can also operate on the SPI bus. I2c bus can do the job for you on an Arduino / esp8266.

I also bought the CT 20A TRANSFORMER, from Tomson. Excellent price point.

The one grouse I have on the purchase was the inordinate shipping times it took for the product to reach me. Took a full 6 days to reach me. I also live in the south of India and shipping cannot take that long. It is not Free Shipping and Tomson charged me Rs71 shipping. I had all the products delivered for my rig that were ordered all over India (as far as Pune and Rajasthan) but had to wait for Tomson for a full 3 days before I could start my assembly. We can do better than that - 4 stars for that, otherwise 5.

I had some questions, on the product before I bought and Tomson was not great with their response
in communication about stock position etc. Could have been better, I had to remind them twice to respond.