Thank you for this answer.
I’m pretty shure that I’ll try with this solution
I would like to buy 2 CZL-601 100kg.
Anyway, as beekeeper, I think that differences of also max +/- 100g on the real weight, are not so big in an enviroment which variates its weight generally in winter so slowly. The real use of theese datas is parallel to understood the behavior during hney harvest, which a significative variation could be more also than 1,5-2kg per day.
My hardware config is made by an arduino uno… That’s is supplied by 5V from a 12V battery charged by a photovoltaic panel.
I think that there are a lot of repentine variation of current and potential during the solar charge that cause some apparently randomized measures. I said “apparently”, because the real thing is that sometime the variation is -1kg and after 30 min, comes back to original values.