It is seducing to consider using the internal flash memory for data logging ... ESP8266, allowing to shut down safely when the battery goes low. Remark about Realtime clock supply voltage and ...

A simple MicroPython script for data logging environmental sensors on ESP8266 board with OLED data display ... SD card logs using SD card module in SPI mode. Logging using Zapier workflow (zap) ...

The components used in the development of the data logger consist of (1) the ESP8266 module as a data sender, (2) a 220 Volt relay as a connector between the ESP8266 and the lathe, (3) the Raspberry ...