Multiply sensors

[milan-de]

Hi together,

is there any possibility to have 2 or more sensor in parallel connected, so to be able to masure on two different point humidity at the same time ? If yes, how to distinguish between sensors ? It seems that all are having address 0x76 per default.

reards,
Milan

[finitespace]

Milan-de,

Yes, from the datasheet, "The last bit is changeable by
SDO value and can be changed during operation. Connecting SDO to GND results in slave
address 1110110 (0x76); connection it to VDDIO results in slave address 1110111 (0x77)..."

See this thread:
https://forum.arduino.cc/index.php?topic=404946.0

Cheers!
Tyler

[milan-de]

Thanks Tyler,

1. as I am using I2C interface I do not have access directly to SDO pin (like SPI interface) so I have to send some special message through SDA/SDI line right ?
2. If so (1.) does your library support setting SDO values to Vddio/GND ?
3. If (1.) and (2.) possible at all then I would have maximu of two sensors over one I2C bus right ?

regards,
Milan

[finitespace]

Milan, Yes, you would have a maximum of two devices. What breakout board are you using? Tyler

…

Sent from my iPhone

On Jul 13, 2017, at 1:25 PM, milan-de ***@***.***> wrote: Thanks Tyler, as I am using I2C interface I do not have access directly to SDO pin (like SPI interface) so I have to send some special message through SDA/SDI line right ? If so (1.) does your library support setting SDO values to Vddio/GND ? If (1.) and (2.) possible at all then I would have maximu of two sensors over one I2C bus right ? regards, Milan — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or mute the thread.

[milan-de]

Thanks Tyler!

I would say some no name :) it is not Adafruit.
I just corrected my last question as I misunderstood something.

regards,
Milan