Someone recently asked us how to interface an AMS TSL2591 ambient light sensor with the Yocto-I2C. It's an interesting question for two reasons: the TSL2591 is considerably more sensitive in low light than the Yocto-Light-V2 or the Yocto-Light-V3 and more particularly its I2C protocol is not the simplest to implement. It's an opportunity to test the limits of the Yocto-I2C autonomous job system.
Everyone knows that any measurement tends to disturb the physical quantity we are trying to measure. This issue is particularly blatant when you try to measure the temperature with a USB sensor. Some sensor types affect the temperature more than others, but there are ways to limit the problem. Let's look at this in more details...
We recently had to use our PHP library with the Symfony framework. We managed it without too much hassle, but we lost some time with some Symfony specificities. So, we thought that a post on the topic could interest you.
Sensirion recently released the SPS30, a particulate matter sensor with both a serial interface and an I2C interface. So, obviously, we didn't have to wait for long before someone asked us whether we could interface it with Yoctopuce modules.
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