05-24-2019, 07:50 PM
Glad to hear things are working ok but I'm surprised to hear about the time. Back in the day when I used the DS1307 there was definite drift but since using the DS3231 it's been quite accurate, definitely no reason to adjust by the time day light savings comes around, by that time it might be out by 30 seconds but not into the minutes. The time is generated on the DS3231 IC so it wouldn't matter how much is connected as the controller only reads the IC via I2C to grab what it thinks the time is.
I'm thinking the DS3231 has issues internally with the crystal. They have a temperature compensated crystal which gives the DS3231 it's accuracy. The DS1307 is typically driven with a regular crystal and why they aren't as accurate so it seems the crystal has shifted or something like that. Unfortunately the IC is integrated in the controller board so you would have to do some soldering to change it or another option is cut a couple traces on the PCB and connect a DS3231 on a breakout board. If you like that option better I can explain.
As for adding a sync with the web that's possible but I haven't done it yet because the RTC is stable and I don't want to many web based features on the Arduino. Once I have the full web based addon I was going to add it.
I'm thinking the DS3231 has issues internally with the crystal. They have a temperature compensated crystal which gives the DS3231 it's accuracy. The DS1307 is typically driven with a regular crystal and why they aren't as accurate so it seems the crystal has shifted or something like that. Unfortunately the IC is integrated in the controller board so you would have to do some soldering to change it or another option is cut a couple traces on the PCB and connect a DS3231 on a breakout board. If you like that option better I can explain.
As for adding a sync with the web that's possible but I haven't done it yet because the RTC is stable and I don't want to many web based features on the Arduino. Once I have the full web based addon I was going to add it.
