Quote:Just be aware of this:
"There is a trade-off between the desire to increase the output voltage (by increasing the resistance) and the need to make sure that the pyranometer output remains linearly proportional to the incident sunlight. "
This is from the link you published. It's valid for my solar sensor and probably for any other that use the same principle.
With some calcolation I think 47 ohm is a good solution to use your same amplification solution.
I started to build the X. A couple of questions. The variable resistor is used just 15k? If I do not use the fan can live without it? To test it out I can connect the TX only with usb? Thanks.
Loris