Arduino Real Time Clock - Using the Tiny RTC

My tiny rtc module with eeprom only shows the i2c address for the eeprom 0x50 and so application can't see the RTC at 0x68

How do you ever get those RTC modules to work? I got 6 of them from Amazon and can't get any of them to work since the 32 KHz crystal doesn't oscillate and the ds1307 doesn't do anything! The Ground pin was not even connected on the pc board but jumping a wire to the neg. on the board didn't help, although it's getting power now it still doesn't do anything. I tried replacing the crystal on one of them but that didn't make any difference. I wonder if they were all made with counterfeit clock chips or what is going on with them?

It seems that assigning the square wave to pin 2 or 3 of the Uno comes with the disadvantage that it is an interrupt. The controller stops when the wave is down.

Why not assigning to a non-interrupt digital input pin and then check for change of state (of the square wave)? This would avoid interrupting the controller.

Also, do the statuses of the I/O change to zeros (off) during an interrupt, or are they frozen (maintained) during an interrupt? Thanks

Can the square wave pin of one RTC be tied to two Arduino controllers by wires, e.g. one Uno and one Nano? For me, only the Uno needs the real time; the nano needs only the square wave digital input.

Hello pls Made video how work whit DS3231 I'm having a lot of trouble with this module

Very good video, i was need know to make interrupt with RTC, thanks. But the pin DS i think that is for temperature sensor, and not for device select, i also verified in datasheet.

I am trying to make a pet feeder. I am looking into clock modules which would run on low power like cmos cell or aaa battery, and not required to have a microcontroller attach or running . I found out clock modules like ds3231etc runs on cmos cell for months. But I realized it can only trigger two alarm daily. Is there any other module with at least around 6-10 alarms capability daily or any way to increase alarms capability of ds3231. So that I can amplify the alarm signal and use it trigger motor or servo that will dispense the treat/food. I was unsuccessful in finding such module, I also tried to find cheap circuit board of a commercial pet feeders on amazon. Still nothing.

Thanks in advance.

why only arduino?

RTC doesn't update time what should i do, am using RTC DS1307

can you please explain what a preamble value means? what is necessary for?

Please lectures on fingerprint module

Realy Helpful...❤ ...DS3231 RTC module projects available in our channel

bill im new to all this and its baffling , but can you help , ive built a coloured digital clock a cheap chineese job , it works but GAINS TIME about a minute a day , is there a way round this, thanks, john.

what should one do for 12 hour format setting?

i have a MSM9004-02 in my car that is severed from the stock radio, so it doesnt work. Can i some how make it into a stand alone clock? I have located the pin out of the chip to 10pin connector vcc 5v and LCD voltage, rest, load, clock, and ground. what do i need to make it work independently?

Thanks, always nice to review the basic modules.

Ich warte den Moment

Terimakasih atas ilmunya

i made a raw ds1302(found from another ready clock) dot pcb module & connected the crystal & backup batterym wired it to A4 & A5, nothing is showing on serial monitor, using nano, do i have to use pull up resistors & what to do with the CE pin.

I noticed that as the serial monitor was listing out the time, temp, humidity that occasionally there were would be two consecutive time displays with exactly the same reading in the seconds place. I thought this would update the display once per 1 Hz tick, so I don't follow how you could ever have a duplicate time displayed. What am I missing?

Thanks! I love your style. It is so very easy to follow.

Excellent vid! This might be a strange question but I cant seem to be able to follow the links you provided for your website. Has something changed or is it me?

Hello Guru, I have recently subscribed to DroneBot Workshop and like your way of teaching with detailed explanations and have become your fan. I request you if possible to append this video for interfacing this with 6 nos 8x8 Matrix Display in configuration as Digital clock display. Although you did mention that there are cheap Digital clocks available. If you have this on your website please do inform.

Airports update their barometric pressure reading hourly at my nearby Paine Field Everett WA. I log my BME280 the same. Humidity readings more often are unneeded.

What is the use of this module on Arduino

I get an error when I try to navigate to the article on DroneBot Workshop. Is the article still available?

Love your teachings!! Thank you!!

Doskonałe wideo, pozdrawiam

Excellent videos to learn.!

Bill Thanks FOR EVERYTHING.

For full article there is an error,

This site can’t be reached
Check if there is a typo in dbws.
If spelling is correct, try running Windows Network Diagnostics.
DNS_PROBE_FINISHED_NXDOMAIN

Unfortunately, the links in the description aren't working!
(Great video as always)

I believe this module is suitable for projects that deals with calendar, such as smart irrigation system in agriculture, or deals with time such as smart home 🏠 light

What’s about start and stop the RTC-Chip? Is this Bit set by settiing the time?.

broken links

Excellent tutorial, thank you.

Dont worry when the 5th wave arrives it will be the catalyst for great change

Nice information sharing with us. thanks. sir if any have best arduino project for bike?

hi , i search for code. the link doesnt work anymore

that led toggle is interesting ^1

the link dbws cannot be open

How can i add 12c screen or 16×2 lcd with arduino and tiny rtc... Please share me pinout and code for that...

Module’s Hidden Feature – DS18B20
There’s a provision on our DS1307 RTC module that often goes unnoticed. It allows us to install DS18B20 temperature sensor.

The 3 holes in the top corner right next to the battery holder(labled as U1) is where the DS18B20 is installed.
Once you install the DS18B20, you will be able to get temperature readings from DS pin. These readings can further be used to compensate for temperature based time drift in code.
So there is no need to install a Temp Sensor, since its already at the Tiny RTC / DS1307.

Best teacher 👍👍👍

I love the way the info presentation flows. Pretty structured and informative. So I've to visit your website for more static info on this topic. However, I found on the website (similar to this video) the description for the DS pin on the TinyRTC module "DS – Device Select, this allows you to enable or disable the device.". I did more research online and found that DS was actually meant for the temperature readout from the DS18B20 tempearture sensing module that can be optionally soldered to the board next to the battery (if its not already there). And it is also recommended to have a pullup resistor to the DS pin conenction when in use.