12-18-2021, 07:00 PM
Hi Grant
Just for reference, my ADC is a cheap fake board costing around 5 euros. It is marked as having an ADS1115, with 16 bit precision, but really has a ADS1015, with 12 bit precision. The values it reports as an ADS1115 jump in steps of 16, but this is fine for my use. I just checked the stability of the readings with the new cheap potentiometer at various points on the dial it is very good, The value is either completely stable or flips between adjacent values. The range of readings is 0 to 26000 in steps of 16, and so the dial should easily be good for 100 positions even with the lower precision ADS1015 on the fake board (if I could turn it that accurately!).
Here is an example cheap board
https://es.aliexpress.com/item/32679398211.html
Adrian.
Just for reference, my ADC is a cheap fake board costing around 5 euros. It is marked as having an ADS1115, with 16 bit precision, but really has a ADS1015, with 12 bit precision. The values it reports as an ADS1115 jump in steps of 16, but this is fine for my use. I just checked the stability of the readings with the new cheap potentiometer at various points on the dial it is very good, The value is either completely stable or flips between adjacent values. The range of readings is 0 to 26000 in steps of 16, and so the dial should easily be good for 100 positions even with the lower precision ADS1015 on the fake board (if I could turn it that accurately!).
Here is an example cheap board
https://es.aliexpress.com/item/32679398211.html
Adrian.
