I have developed a simple, cheap temperature measurement and logging device programmed in C# running under Win10. Here you can find a German document and the C# – source code. I have used 8 preconfigured LM35 – Sensors, read in the temperatur proportional voltage with the I2C- Chip LTC2309, which is available on a Demo board DC1337A from Analog devices. The I2C – Interface is realized with my well known CH341 Chip with some more information on my CH341- page. Total costs around 90 €. If you have questions feel free to contact me.