AHT10 - I2C problem

Hi  beacon_dave ,  it takes around 20 ms to reach idle state. I am gonna use it measure hive temperature. So power efficiency is more important than the timing. I will try to select the sensor with power line and see how it works. 

I haven't tried it yet. It is said on the data sheet. However, I will try it when I get another I2C device. It has a soft reset so it is good point to check. 

I see. Someone used the term "partial compliance". I think it should be stated in the data sheet and on the seller's page as it doesn't comply with the actual protocol. 

Perhaps keep in mind that the data sheet may have some language translation errors.

Running the Chinese data sheet through the likes of Google translate results in:

"I2C Only a single AHT10 can be connected to the bus, and other I2C devices."

which would make more sense. 

However you would need to test it.

Sounds weird that it is incompatible when wired with other i2c devices, that what i2c is for.  Raspberry Pi Pico supports qty 2 i2C busses as possible work around

The Nicla Vision part of the kit includes a MAX17262 which has a temperature monitoring capability. Maybe you could use that in a pinch. I think it requires a thermistor - I'm not sure if the thermistor is installed.

If there is a translation error, it makes more sense. On AHT20 datasheet, it also says you can connect other devices. I will test it and see. It is also weird that the breakout board has two address (0x38 and 0x39) written on the PCB but no mention of 0x39 on the datasheet. 

I have to use Arduino MKR WAN as it is for save the bees design challenge. I can simply change the sensor but I want to see the possible options. I will test chip select option. 

Just curious, what is the scenario where they will both be deployed connected to the same microcontroller?
Ordinarily, the distance cannot be too great with I2C (i.e. i2C not normally used for local/remote sensing, unless remote is something inside the same enclosure (usually). Do you intend to have the sensors connected over a long distance?

I am not in rush or lack of sensors but I wonder why this is an issue. Also, looking if there is a work around with these sensors. Nicla Vision has that pin for battery temperature and it has built-in upper/lower temperature limits. I didn't know it has alarm feature, sounds interesting to test.