Microchips projects

Wifi Thermometer is a project where NodeMCU is used in AP mode, it's actually a hotspot to which you connect, and then you can view the temperatures or the magnitudes of other sensors that you connect to the NodeMCU. Values are viewed through a web browser on the page that NodeMCU generates. It is located on the same IP / DNS flag as the gateway (NodeMCU). This solution demonstrates two DS18B20 sensors using OneWire protocol. parameters: NodeMCU in Access Point (AP) Custom SSID and WPA2 PSK encryption Custom IP (static) / DNS flag Secure web site accessible from home network Always when loading the page, the current info (informative character) Graphic depiction The data is updated whenever the client refresh the page. This means that it always has the current temperature. Support me and find interesting solutions at: https://arduino.php5.sk Source code: # include <OneWire.h> //KNIZNICA ONEWIRE PRE VYUZITIE ONEWIRE ZBERNICE # include <

Internet of Things (IoT) is a topic that involves automating or controlling (not only) households from intelligent devices. Under the term IoT, it is possible to imagine everything around us that communicates in some way, and it is possible to acquire information, manage and know about these devices, such as whether they are turned off or turned on. This is your television, your computer, washing machine, mp3 player, appliances, sockets, lights. Their data must be sent to the network by hardware if they do not have a certain connectivity or if they do not support the IoT standard. As a hardware we can use a chip or a minicomputer that performs this function. Consequently, these devices can be managed with the hardware that they can communicate with the device and then send these device values / statuses to the IoT network gateway. In this article you can read about the most famous IoT hardware platforms, but most of the hardware is only used for local projects without having to conne

Today, I'd like to introduce the system I've been developing last week. I made an RFID system to open the electronic door. The system is built on components for Arduino, ie a 13.56MHz RC522 card reader and keypad, compatible cards and keychains. The reader is able to read the ISO / IEC 14443 A standard cards. This standard also works on ISICs, ATMs, or busses, and can also be read and used for such a project. By reader, I read the MAC address of the cards (it can also be read and write in the memory of the cards and the key, which is mostly 1kB or 4kB), the MAC addresses I read to convert to a specific DEC format. In the role of the microcontroller for processing and sending data, I used a NodeMCU board that has wifi connectivity and is more than adequate for this purpose. The system is suitable for halls, corporate entrance gates, electronic doors and similar applications. The task of NodeMCU is to send data to the web backend whenever it logs the card and opens or unlocks

Today, we will devote our microcontroller and its general use to a rather unusual purpose. Specifically, I will be talking about how I made a microcontroller from a webscraper. (If this can be called when processing your own backend information). As many of you know, a web scraper is a device that performs the task of retrieving information from that web site. The most wanted information from websites is e-mail addresses, phone numbers. Recently, however, this phenomenon is also used for a variety of statistical tasks where the scraper receives data on products, their prices, and evaluates them. Even similar devices are used as robots for trading with cryptomas or common names. At the most appropriate time (statistically) the robot pedal and bought another - a suitable menu with a rising tendency. In my case, I was interested in getting information from websites, specifically phone numbers and email addresses. We will therefore go directly to the realization. I have used 3 kinds