The BME280 is a good and reliable sensor in my experience. But it offers only 2 addresses. Though I haven't tried it myself, I think there are hub-like devices, which allow to extend the address space. Using 6 devices should be possible.
However, 6 meter long wires look to me like too long. Take a look at the I2C specifications to see what they say about wire length. I don't expect that signal-damping is the main problem, which could be partially overcome by thicker wire. The likely problem is the signal distortion due to length.
Speed is not you problem. So I imagine, but don't know, that perhaps the 1-wire technology is less sensitive to signal distortion? But then I don't know whether an I2C-to-1Wire transformer exist, or whether such sensors exist. Given that you need only temp and humid, it seems likely to find such sensors (The BME280 really shines when you also want barometric pressure!).
However, 6 meter long wires look to me like too long. Take a look at the I2C specifications to see what they say about wire length. I don't expect that signal-damping is the main problem, which could be partially overcome by thicker wire. The likely problem is the signal distortion due to length.
Speed is not you problem. So I imagine, but don't know, that perhaps the 1-wire technology is less sensitive to signal distortion? But then I don't know whether an I2C-to-1Wire transformer exist, or whether such sensors exist. Given that you need only temp and humid, it seems likely to find such sensors (The BME280 really shines when you also want barometric pressure!).
Statistics: Posted by ullix — Thu Feb 01, 2024 7:57 am