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Your cart is empty. DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino
Parameters:
1. Dimension: 38mm* 22mm * 14mm
2. Weight:. 8g
3. Working voltage : 3.3 -. 5 .5 V
4. Clock chip: high-precision clock chip DS3231
5. Clock accuracy within range :0-40 ¡æ, accuracy 2ppm, about 1 minute in error
6. Programmable square-wave output
7. Real-time clock, it can generate seconds, minutes, hours, day, date, month and year, and provide time until 2100, and with leap year compensation.
8. Internal chip temperature sensor comes with an accuracy of ¡À 3 ¡æ
9. Memory chips:. AT24C32 (storage capacity of 32K)
10. IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
11. IIC other devices can be cascaded, 24C32 address can be modified by a short circuit A0/A1/A2, the default address is 0x57
mikey
Reviewed in the United States on August 15, 2024
worked great w/ T Display S3s - just ensure you get rechargeable batteries for it will try to charge the coil cell. I have about 10 of these deployed so far w/o any fall out or issues
SpeedD408
Reviewed in the United States on June 2, 2024
The module is perfect for my project. I just wish it didn't have the 2.54mm pin header pre-soldered in place. I just need to have the pins in a different orientation. Therefore, it would be easier if I didn't have to de-solder these to install what I need, but I'm not going to remove any stars for that as the way it comes stock works great on a breadboard.
The Reel Deal
Reviewed in the United States on June 17, 2024
IMPORTANT BATTERY INFO!!--------------------------------------These all worked great, but be SUPER careful, this charges at 5V so it popped my batteries and fried my Arduino MEGA board, OLED and my Bluetooth module. I made some adjustments and added a PIR sensor and when I reconnected it, I inadvertently connected the RTC to 5V and you see the picture, POP! Took about a month or so, but just be careful.ON THE RTC ITSELF-------------------------------------As far as the unit, it's solid. They been living in a PVC box outside with a cooling fan (FL so it's hot and humid) and they are holding up great. I use them to verify time for lighting and for irrigation scheduling so it's kinda important it stays accurate.The temperature seems a bit high sometimes (mine had a getTemp() function) but I'm not sure if it's just the location or the sensor itself. I'll need to test it with an external thermometer but I have a temp/humidity sensor I'm using separate anyway so I don't depend on the RTC temp that much. More of a second look at temp.So no issues for me with the RTC and its functions at all. You obviously need a library to use it and will need to write some basic functions to extract time, compare time, etc. Those are not in the basic library as far as presentation type output.
Rockit Cool
Reviewed in the United States on November 22, 2024
These little modules are outstanding. Not only do they keep excellent time but have a temp sensor and even extra storage you can use for storing needed variables etc.. I've already used 4 of the 5. Now all my projects know exactly what time it is. Critical when you're logging data.just sync them up with time.windows.com
Johan L.
Reviewed in the United States on June 15, 2020
I've used one of these modules in my smart car project and it is keeping the time very accurately even under the Texas Sun, stored under the dash! I'm using one of these modules, an OLED display, an NFC reader and a relay module all connected to the same I2C channel without any trouble. Good value!
P. Larsen
Reviewed in the United States on January 6, 2020
Ok - this unit is HUGE - it's bigger than my Arduino Nano and magitude larger than the ATTINY. That's mainly due to the battery selection CR3220 which is HUGE but on the other hand, it makes it easy to get and replace batteries.Hookup is EASY - i2c is a simple protocol to use on any Arduino (just look up the pins on your model) and RTClib will connect and use the unit very easily.The issue is keeping the time once set. I'd created several items that needed time over the last month so I've used several of these RTC units to keep time. However, after even a day there's a very big drift in time - several minutes, at times several 10s of minutes! This means there's really no point to that huge battery - the unit would do better using network time that would be adjusted every so often during the day.The last issue is power consumption. It's HUGE - a large power led shines and wastes mAs galore when running. Of course if you're just starting out, the LED may be helpful to see things are turned on, but as I've had to build little project boxes for my things, I find this unit too large and too power-hungry, on top of not being able to keep time. So for practical time use, I'm looking at the Nano33 IoT which has RTC built in and other solutions where power consumption is low and size even so.
Dave
Reviewed in the United States on January 30, 2020
These modules are easy to use and a real value at $1 per module. BUT, of the 10 I received, 3 were the M version (+/- 5ppm accuracy) and 7 were the +/- 2ppm SN versions. So beware that they are not all the same. The SN version has an internal TXCO (temperature compensated crystal oscillator), whereas the M version has an internal resonator, but not temperature compensated like the SN version.
D. Sroelov
Reviewed in the United States on September 22, 2019
the clock itself is wonderful, and exceptionally accurate. be careful with the batteries though. this module has a charging circuit on it, which might not be kind to regular (non-rechargable) CR2032 batteries. i have not tried it with rechargables, like an ML2032. you can also cut a trace on the module to completely disable the charger, which might not be a bad idea. a regular CR2032 should probably last a year or two; maybe less, maybe more.
Client d'
Reviewed in France on July 31, 2017
Je le recommande vraiment. Fait bien son travail, ou du moins, celui qu'on lui demande. Utile pour de nombreux projet. Codage simple pour un bon fonctionnement.
Richard A Whetton
Reviewed in the United Kingdom on May 17, 2017
they worked as exactly as they should
DaveP
Reviewed in the United Kingdom on August 1, 2016
Useful clock module which is more accurate than the DS1307 which it is interchangeable with code wise. Well made units with back up battery included.
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