Жизнь, бизнес и IT

Hidden wiring Detector is an irreplaceable thing during repair. Of Course, you can save on this tool, but often such savings are spent hours of time to recover damaged wiring. In The article I compare the quality of the voltage … Continue reading →

When the ESP8266/ESP32/Arduino lacks GPIO you can use the MCP23017 chip to increase the number of ports by 16. Chip Control is performed on two wires I2C, communication is convenient. The Price for the chip is about $0.8. On Aliexpress … Continue reading →

In the last article, I mentioned how to work with RS485 module XY-485 with ESP8266. In this article, I’ll review how to work with XY-485 module with microcontroller ESP32. In the next article, I’ll review using very cheap MAX485 based … Continue reading →

The Last few years the term "Internet of Things" (Internet of Things, IoT) is gaining popularity. Technology is seen as one of the engines of progress and economic development in the coming years. It would Seem that the term IoT … Continue reading →

For development of IoT devices it is necessary to use various GSM modules. Unfortunately, NB IoT or LoraWAN chips at the moment cost at least three times more expensive, so in most projects their use is unjustified until the cost … Continue reading →

At development of devices on the basis of microcontrollers ESP8266/ESP32/Arduino working through RS-485 on protocol Modbus important moments is configuration of Modbus operations. There is no Sense to "reinvent the wheel" in the configuration of the format. One of the … Continue reading →

RS485 interface providing a noise-resistant connection with the equipment at a distance of up to 1200 meters. The question is how to ensure a secure connection of the microcontroller to the equipment operating on the RS485 interface? When lightning, electronic … Continue reading →