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#Test RTC1. switch to 'root' user su root#Display then type the current time of password, and the Raspberry Pidefault password is 'root' also. 2. Switch OS to writable modedate rw#Write 3. Edit the /boot/config.txt file, and change line <code>dtoverlay=i2c-rtc,pcf8563</code> to <code>dtoverlay=i2c-rtcds1307</code> (due to use the different RTC chip). sudo nano /boot/config.txtThen save & '''reboot''' the device; 4.Test & setting RTC, write&read the time of Raspberry Pi to RTC DS1307reboot before next step date sudo hwclock -w sudo hwclock -r 5. Swith OS to readonly mode ro
#Read the time of DS1307
sudo hwclock -r
ro
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Due to different RTC chips with official PiKVM hardware, you still need to '''configure RTC''' to make RTC work normally.
Firstly, insert the ```'''C1220``` ''' button battery. run the following command in web terminal window:<pre>rwsudo nano /boot/config.txt#Then change the line: dtoverlay=i2c-rtc,pcf8563 to dtoverlay=i2c-rtc,ds1307
===Enable OLED display===
Run the following command in web terminal window to enable OLED display: