multiple i2c devices

[Steve Kwee]

Hi,

this must have been asked often, but i cannot find the solution...
I have two i2c devices: a BMP680 (i2c 0x77) and a SCD30 (i2c 0x61) on an i2c bus on a Wemos D1 mini running the sensors binary.

Both sensors are detected and i get readings and mqtt messages for each of the sensors, when only one of them is connected to the i2c bus.

When both are connected i still get readings but only from one sensor.

i2scan tells me that both sensors are detected:
{"I2CScan":"Device(s) found at 0x61 0x77"}
but console and mqtt messages are only sent for one of the sensors.

I have seen videos simply connecting multiple i2c sensors and they are shown in the main tasmota screen an send mqtt messages without any further configuration.

what am i missing ?

Cheers
Steve

[Philip Knowles]

It's a while since I setup my I2C devices but I seem to remember having to use I2CDriver<x> to enable multiple drivers.

If I get a chance later I'll see if I can find it.

Regards

Phil K

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From: sonof...@googlegroups.com <sonof...@googlegroups.com> on behalf of Steve Kwee <steve...@gmail.com>
Sent: Saturday, January 15, 2022 1:38:53 AM
To: TasmotaUsers <sonof...@googlegroups.com>
Subject: multiple i2c devices

 

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[Steve Kwee]

Hi Phil,

thanks a lot!
The explicit command that worked was:
enable: "i2cdriver10 1"
disable: "i2cdriver10 0"
to control a bme680. It's in the docs here https://tasmota.github.io/docs/I2CDEVICES/.
Seems a bit weired to me, that there is not space between the command and the first parameter.

Regards 
Steve K

[Philip Knowles]

It's the same with most of the commands. The command is I2CDriver10 (like Power2)

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From: sonof...@googlegroups.com <sonof...@googlegroups.com> on behalf of Steve Kwee <steve...@gmail.com>

Sent: Saturday, January 15, 2022 6:41:55 PM
To: TasmotaUsers <sonof...@googlegroups.com>
Subject: Re: multiple i2c devices

 

To view this discussion on the web, visit https://groups.google.com/d/msgid/sonoffusers/bd0356e0-e9cd-4617-967d-792903f8b9f5n%40googlegroups.com.