HiLetgo BMP280 BMP280-3.3 High Precision Digital Atmospheric Barometric Pressure Atmospheric Pressure Sensor Replace BMP180/BMP186 3.3V

Llego rapido y muy bien empacado

These work fine, but I meant to buy the BME280. You don't have to "manually change the address inside the Adafruit_BMP280.h to: #define BMP280_ADDRESS (0x76)". At least, not anymore. Just use the commented line, and comment the one that is un-commented in the example code. Your code should look like this: status = bmp.begin(BMP280_ADDRESS_ALT, BMP280_CHIPID);// status = bmp.begin();BMP280_ADDRESS_ALT is defined as 0x76

humidity always returns 0.0, the other telemetry data looks ok. Easy to connect to Raspberry Pi 3, just update Bosch C driver (bmp280.c) with correct I2C address. If you order from China your looking at 2.5-3 weeks

Purchased two bags of 5 at different times from HiLetgo through Amazon. In the second set of five only two worked properly. One read 220 hPa off! These HiLetgo breakout boards were junk! I am concerned maybe the rest will fail soon after they are deployed in our product. I will not buy anything made by HiLetgo again despite their cheapest price.

The device works great. I am impressed with the accuracy and stability. There is a little bit of calibration to do. Just go out and get about 4-5 locations of pressures from various airports in your area. Average those measurements out, then turn around and get a reading from the sensor and then subtract it from the average and take that difference and remove it. It is around 40 or so. Once that calibration is in your code. It stays with no real change necessary. I have run this thing for 3 days straight taking measurements once a minute using an Arduino ESP8622. Works excellent.

Buyer beware: These sensors are not BME280 sensors. They are something else, maybe a bmp280. They do not work with the bme280 libraries in arduino ide.

I only tried one of the 5 that I received but it worked fine, and compared to a different BMP280 from a diff manufacturer, it was accurate.To make it work, you must use Vcc as 3.3V and hook SDO to 3.3V for I2C interface. No level converters are required and the address is 0x77.

VERY small form factor makes installation in tight spaces easy. Altitude wanders a bit, but doesn't run off in just one direction like so many others. Temperature seems to be right on, at least in the narrow range where I tested it.

Very good. They work great for my use. No problems at all, i2c bus address 0x76. just what I wanted/needed.