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A: Yes. please contact us at mail: support@geekworm.com， But we actually think OLED displays are pointless
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<summary>Q: How to enable RTC?</summary>
Firstly, insert the C1220 button battery, then run the following command:
<pre>
rw
sudo nano /boot/config.txt
#Then change the line: '''dtoverlay=i2c-rtc,pcf8563''' to '''dtoverlay=i2c-rtc,ds1307'''
#Test RTC
#Display the current time of the Raspberry Pi
date
#Write the time of Raspberry Pi to DS1307
sudo hwclock -w
#Read the time of DS1307
sudo hwclock -r
ro
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