“An update of a previous big ben digital chiming clock, with an Android bluetooth app to adjust the time and set the date on boot up.
This is a variation of a previous Chiming Clock project.
By using an ESP32 I have used the bluetooth BLE to connect to an android app to set the RTC DS3231 to the system time of the phone.
When the system is booted, the app should be connected within the first 20 seconds to stop the countdown. When the time is set and the app is disconnected
the clock will be displayed on the ST7735S colour digital display.
I have used the DF Player mini to play the chimes on the hour. The output is connected directly to a 2w speaker mounted into a cardboard box for bass and amplification. (I have used a buck to supply the regulated 5v)
I have included a 2200mf electrolytic cap to allow the esp32 to boot as the surge to the DFPlayer on power up and playing would cause the ESP32 to malfunction.”