eleksir/simpleclock
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Added info about photoresistor branch to README.md

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eleksir
2019-05-21 16:13:41 +03:00
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@@ -24,3 +24,8 @@
### Additional Notes:
My RTC module is not very accurate due to bad quartz chrystal calibration, looks like it is not exactly 32768 Hz and clock runs faster than it should be, giving about 5-8 seconds runaway per day. So i have to implement time correction in software (temperature changes during day/month/year is not very big - about 10 degrees Celsius, so we can use software compensation without thermal compensation).
This project split into 2 branches:
* **default** that contains generic clock without any additional elements
* **photoresistor** that contains additional hardware - photocell bridge - and software algorithm that compensates ambient light sensed by photocell basing on LED display charachteristics.