The Raspberry Pi is perhaps the most well-known example of a low-cost computer without the extra expense of a real-time clock (RTC ... microcontrollers like the ESP32 don’t, but it is possible ...

The ESP32 is looking ... s headers for the real-time clock, AES, SHA, buffered UART, and register definitions for SPI and I2S. There’s JSON code, a port of mbed’s TLS module, the lwIP ...

The Obsidian ESP32 offers a footprint compatible with Raspberry Pi cases and can be used with ready-made Raspberry Pi peripherals as well as supporting Arduino IDE, Espressif IDF, or MicroPython ...