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I have noticed the battery in the chronodot wants to try and power the arduino when the arduino is powered  off I guess adding the 2 pull up resistors will correct this issue
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I have noticed the battery in the chronodot wants to try and power the arduino when the arduino is powered  off I guess adding the 2 pull up resistors will correct this issue

That should not happen. What are the symptoms? The battery power is separate from the main supply. How do you have it wired?
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Grand Blanc, MI, USA
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FYI connect the Chronodot as follows: GND to Arduino GND, Vcc to Arduino +5V, SDA to A4, SCL to A5. Leave the Chronodot BAT pin unconnected.
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Yea that’s it I had the 3.3v pin connected to the BAT on the chronodot and I was getting back feed when the arduino was off......... other than that it is working without changing anything
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I'd make sure the coin cell in the Chronodot looks OK, not swollen or leaking, etc. The 3.3V pin was probably forcing current into it, those aren't rechargeable cells...
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ok I just changed the cell it looked ok but I changed it anyway............. the chronodot is working very well and the previous issue was resolved
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Hello,
I was wondering If I can control 2 arduino uno  with one chronodot.... I have tried this and it works but I am not sure if it is ok to do
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