https://github.com/felias-fogg/RTCEval

A long-term experiment with thirteen different RTCs
https://github.com/felias-fogg/RTCEval

rtc

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A long-term experiment with thirteen different RTCs

• Host: GitHub
• URL: https://github.com/felias-fogg/RTCEval
• Owner: felias-fogg
• License: mit
• Created: 2023-03-08T08:50:42.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2023-04-09T23:02:29.000Z (over 1 year ago)
• Last Synced: 2024-08-07T18:27:32.141Z (5 months ago)
• Topics: rtc
• Language: C++
• Homepage:
• Size: 12.4 MB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: LICENSE

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README

        
# RTCEval

This is a long-term experiment running thirteen RTCs for some time in order to see how they live up to their specifications. 

Ground truth is delivered by a DCF77 receiver and the deviation is measured in msecs every day at midnight. In addition, temperature is measured every hour. All that is stored in a serial EEPROM with space for 1024 days. The plan is to let the experiment for a year or two. 

The RTCs that will participate are:

* DS1307,

* DS1337,

* DS3231SN,

* DS3231M,

* MCP79410, 

* PCF8523,

* PCF8563,

* RS5C372,

* RV-3028, 

* RV-3032, 

* RV-8523,

* RV-8803, and

* SD2405. 

This is how it looks before I started to connect the RTCs to the I2C multiplexers and the MCU.

  ![start](./pictures/start.jpg)