connecting a BMP280

Tinchus

Hello . I want to connect a pressure and temp sensor to a duet3. I have already update to 3.5 beta
I have a thermocouple daughter board: https://www.duet3d.com/tc_k_daughterboard

Will this board work for connecting the BMP280? Or I shoulkd connect the cables to the propper pins on the duet board on this connector:

Also the sensor I have is this one: https://naylampmechatronics.com/sensores-posicion-inerciales-gps/358-sensor-de-presion-bmp280.html

The diofference I see on documentation is about pins: on sensor I can see vcc, gnd,scl,sda,csb and sdo, documentation talks about connecting SDI, SDO and SCK

All help will be really preciated

Thanks in advance

droftarts

@Tinchus I don’t know if BMP280 (temperature and pressure) is supported. BME280 (temperature, humidity and pressure) is. I don’t know if you can connect and configure BMP280 as BME280, just with the pressure channel missing; one for @dc42 to reply to. Try it, and report back!

For pins, I think scl=SCK (clock), sda=SDI, csb=spi.cs and sdo=SDO.

Ian

Tinchus

@droftarts In theory this is a BME/BMP280 module, when bought I was looking for a BME280, seller said this was the same.

I also have some of these ones: https://www.ebay.com/itm/184914617101?hash=item2b0dc5230d:g:8NUAAOSwTCNg3QD5&amdata=enc%3AAQAIAAAA4EX8FejX50OTwAExdLKJgxnQJXu3n4JrInn%2Bgj%2B%2BLpjfBPdN3lHAAz%2FxlFzEqTVkz5xm3fKMtruMtSiZ6e1i2v4pHT28wldpE3L%2FgBiFdq8Z3hQhuf6xV2pc0lpQr16J34ueFaU6pSdPLESn7fg5pmGaCw8qQap05B4GXP%2FUA51oQjL00wZ4Wrl0%2BrxGLgsqa3%2B6Yr3okcjfWA%2FgCRjZi1o7bw7ddXPkJV%2BQXpt%2BjGMiZdoPoc7d%2BOTVBVuc0jL76zAkPfUFy1%2FZSKCcgrZpv74t8T5S2ScxMq%2BwVV3ksXlQ|tkp%3ABk9SR7rF1cb4YQ

droftarts

@Tinchus said in connecting a BMP280:

https://www.ebay.com/itm/184914617101

BME and BMP are not the same; BME reports humidity as well.

The BME/BMP sensors with only 4 pins are connected via I2C, not SPI, and are currently not supported.

Ian

droftarts

@Tinchus After checking with @dc42, it seems the BMP280 is not supported, only the BME280 is. If you want it supported, add a request in the 'Firmware wishlist' category.

Ian