Category Archives: IT Recipies

 

                   

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Connection of GSM module SIM800L to ESP8266/ESP32/Arduino

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

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Eliminating the contact's slumber in the water meter

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

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Connection of the relay to ESP8266/ESP32/Arduino via the TLP281-4 optronic Assembly

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

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RTC (Datalogger) modules for Wemos D1 Mini & MH ET Live Minikit

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

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Overview of RS485 modules for ESP8266/ESP32/Arduino

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

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Connecting DS18B20 to ESP32/ESP8266

DS18B20 convenient digital thermal sensor. In industrial operation, sensors are usually used in a waterproof stainless steel capsule. Sensor Characteristics: The Range of measured temperatures is 55 ° ~ + 125 °. Supply Voltage 3.0 V ~ 5.5 V Low … Continue reading

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