⏳ Time is on your side with precision!
The Aideepen RTC Module features the DS3231 high stability real-time clock with a temperature-compensated crystal oscillator, ensuring accurate timekeeping and automatic date adjustments. It includes a digital temperature sensor with ± 3°C accuracy and operates within a voltage range of 3.3V to 5.5V, making it ideal for various applications. Note: Battery not included; compatible with CR2032 or rechargeable CR2025.
M**R
Way more accurate than the other RTC modules I’ve used!
A little pricier than some of the other RTCs, but these use the SN chip series and are a much better build quality. I’ve been running one for the last week on battery power, but every time I turn on the power supply it shows the correct time (to the minute, I haven’t gotten around to tracking the seconds drift yet). I highly recommend these RTCs if you have a circuit that you want to be able to set and forget about for extended periods of time.
F**D
Perfect, Accurate RTC, but check battery
This seems to be the 'real deal DS3231SN high accuracy RTC. Works as expected with standard libraries. On board EEPROM is a bonus.HOWEVER, in order to use standard lithium coin cell, you must remove the resistor as documented in previous comments. Other than that, this is a great value.
S**S
Great... but Do NOT use CR2032 battery without modifying
Very nicely made unit. Comes with the higher end DS3231SN chip.HOWEVER... this unit is still shipping set up to charge the coin battery if you add one. This means you CANNOT use a regular CR2032 battery for backup without modifying the board. I took a star off because not disclosing this can potentially damage equipment or even start a battery fire.See the attached photo. Module Vcc is connected to a 5v supply, and you see I’m getting 4.8v on the battery terminals.Search the web to see how to mod the board to remove the diode or resistor that connects the positive battery terminal to Vcc. This will make it safe to use a regular CR2032 battery.There are many views out there on whether to use a rechargeable battery in this kind of trickle charger. So research and see what route works best for you.
A**N
Exactly as described, but had to remove resistor to use regular battery
Arrived quickly, and as described. I removed the resistor in the picture as others have mentioned, so I could use a regular (non rechargeable) battery safely. Took about 20 seconds and everything works as it should.
D**E
Cheap materials
It uses a cheap plastic battery holder that breaks easily and makes the unit worthless.
D**Z
Inaccurate SQW
Might be OK for basic clock (hours/minutes)...but the square wave output(s) are NOT like other genuine DS3231's I have on hand. These units varied from 32.711kHz to 32.692kHz, especially when under minor temperature change. I have other units in the exact same PCB footprint and makeup - and they rock at exactly 32.768kHz even when blowing a heat gun right on em. I tried with battery both installed and removed. I testing with direct lead clips to an oscilloscope, no breadboard or extra hookups.
J**E
Excellent RTC
Order the right battery, be sure to put the rechargeable battery type in the RTC. Once set it is very accurate. I've left it off for a month and after turning the computer back on the clock hadn't drifted, at least out to a micro-second.
T**H
after 3 months EXACTLY the same as NIST Atomic slock.
I set this up with a UNO and a C# app that also looks at the NIST Atomic Clock. after 3 months it is still right on the money. I was expecting to be off by 1-2 seconds per month. nope ! right on the money.
Trustpilot
2 months ago
1 month ago