Arduino, ESP8266, ESP32 related BLOG

The PN532 RFID reader is a popular NFC reader operating at 13.56 MHz. It is popular mainly because it exists in the form of a module that is compatible with Arduino or other open-source hardware. The most famous is the V3 version of this reader, which was brought by ELECHOUSE (a manufacturer from Hong Kong) and can currently be found...

In May 2023, the design of the PCB (printed circuit board) for the RFID DOMINATOR 2.0 stopwatch, which is intended mainly for Airsoft or Paintball games with the DOMINATION game mode, saw the light of day. Subsequently, in August 2023, physical PCB samples from JLCPCB were also released. It was an upgrade of the original version 1.0, which fixed...

Today I would like to present the water level meter IoT monitoring project (Watmonitor), which consists of a web application and sensor nodes, which are formed by a microcontroller and transmission technology that allows the transmission of measured data from ultrasonic distance sensors. The web application allows to record data from the sensor...

Secure Boot is a method of securing the boot process for ESP32 microcontrollers against untrusted firmware and bootloader, which can be physically loaded into flash memory via the UART interface or in an update. Secure Boot combines the method of verifying the digital signature of the firmware in the boot process and also in the process of remote...

Today we will show you the possibility of uploading a compiled program - the so-called machine code into Arduino that is unreadable to the average user. However, it contains instructions that the microcontroller executes. The main advantage of machine code is that it can be uploaded to Arduino by anyone who has access to it without having libraries...

The WiFi thermostat project was originally created for the ESP8266 WiFi microcontroller platform from Espressif as equivalent to the Ethernet thermostat, which was built on the AVR microcontroller ATmega328P used in Arduino UNO, on which an Ethernet shield can be slid. The thermostat allows control of the GPIO output based on the measured...

The WiFi thermostat project for the ESP8266 microcontroller was originally created similar to a room thermostat, which is controlled automatically with its data - i. target temperature and hysteresis. Automated control is used especially during the autumn, winter and early spring months. However, during the summer, the thermostat is switched off...

The ESP32 microcontroller can be programmed in various development environments. Arduino IDE is one of the most popular, mainly due to easy program implementation even for beginners. However, there is also the ESP-IDF framework from Espressif Systems, which manufactures these microcontrollers. It allows closer access to the physical layer of the...