RGB Pov Clock

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RGB Pov Clock on: March 19, 2021, 04:02:16 PM
Hello, I have an RGB POV clock made with arduino nano it has 5 led rgbs. There is no RTC support, can you help me with connecting and using RTC so it doesn't reset when I turn it off?

Re: RGB Pov Clock Reply #1 on: March 20, 2021, 09:02:36 AM
Hi there. For example you can use the DS3231 IC as I've done in this schematic: https://electronoobs.com/eng_arduino_tut61_sch1.php But in my case, as you can see, the VBAT pin is connected to the same VCC. Any time the VBAT pin is disconnected from a battery, the data will reset. So just make sure to add a small cell battery connected tpo VBAT and GND of the IC. Or if you have space, just sue directly a RTC module that already has the battery.