I want to measure the resistance of an organic material being heated overtime (like 15 minutes) and store the measurements and so I want to use my arduino uno to do that. Tested the material using a multimeter and got measurements ranging from 10 megaohm to 1000 megaohm. Any advice on how build the system to measure this kind of data, if possible? Or perhaps refer me to old projects who have done the same thing? Tried googling, couldn't find one with sketches. Just the final result.
Thanks a lot,