Category Archives: IT Recipies

In the previous artiсle I have considered in detail the relatively expensive (color of the sea wave :-)) GSM module SIM800C and its connection to microcontrollers ESP32/ESP8266 series. I didn’t like this GSM module SIM800C. In my opinion there is … Continue reading →

In the previous article, I considered an example of a scheme to remove data from a water meter. The program method using the Bouncer2 library was used for getting rid of the contact'S slumber. Software removal of the contact's slumber … Continue reading →

In the previous article I considered the connection of the relay to the output of microcontrollers ESP8266/ESP32/Arduino through a discrete transistor, i.e. Without galvanic junction load and microcontroller. You can simplify your life and do not be wise with the … Continue reading →

Aliexpress presents a large number of various external modules RTC and combined modules RTC + SD card or EEPROM. I will consider the most interesting for use with compact developer boards MH ET Live Minikit (ESP32) (another variant of search) … Continue reading →

The Industrial interface RS485 is used for data removal and control of various devices. Typically, the Modbus RTU/TCP protocol is used. About shields for Arduino allowing you to get the RS485 interface I wrote earlier. However, shields are suitable for … Continue reading →