Posted in Arduino Hacks, clock hacks Tagged arduino nano, binary clock, dial-up music, driftwood, DS3231 RTC, IR remote, mp3 player ...

There are only four components: an Arduino Nano, a DS3231 RTC module, a SSD1306 128×64 OLED module, and a momentary pushbutton.

512KB SRAM and 16KB of RTC SRAM Dual-core CPU at 240 MHz clock speed USB-C programming port The Arduino Nano ESP32 is available to order today in the Arduino Store, starting at $18.