C++, Arduino

<ul> <li>Printing of classic labels or adhesive labels</li> <li>Connection to PC via USB</li> <li>Option to print using commands from the command line, bash script, web application or from your own application</li> <li>Option to enter text directly on the device</li> <li>Suitable for automating the printing of adhesive labels, price tags, labels, receipts, etc.</li> <li>Possibility of using larger external label discs</li> <li>Printing barcodes, QR codes, images</li> </ul>

Micropython, NodeJS

ESP32, ADC, Motor

<ul> <li>Měření vlkhosti půdy</li> <li>Připojení přes wifi</li> <li>Možnost volby mezi zavlažováním autonomním a manuálním (vzdáleným)</li> <li>Možnost fungování online nebo offline</li> <li>Hlídání minimální doby od posledního zalévání</li> <li>Časový omezovač doby zalévání</li> </ul>

NodeJS, JS

<ul> <li>Communication status display and communication response</li> <li>Monitoring of fault conditions</li> <li>Configuration of equiterm, TUV and other elements</li> <li>Remote controller restart</li> <li>Remote water supply to the system</li> <li>Integrated terminal for direct communication with the controller</li> <li>Terminal for bulk command processing</li> <li>Possibility of creating your own schemes</li> <li>Automatic disconnection of the user during inactivity</li> <li>Option to take over a running visualization</li> </ul>

C++, NodeJS, Websockets, Platformio, Arduino framework

ESP32, DS3231

The possibility of use, for example, as a collection device for an attendance system, or an access unlocking device <ul> <li>Support of 125kHz or 13Mhz RFID chips <li>Communication via Wifi or ESPNow</li> <li>Ability to add multiple Wifi APs with automatic switching</li> <li>Sending data to backup server</li> <li>Update the clock in RTC from the Internet</li> <li>Data backup in case of network failure to internal storage (SPIFFS) or SD card</li> <li>Battery, Wifi and mute indicators</li> <li>Prevention against code jamming (Watchdog)</li> <li>Scheduled restarts during downtime</li> <li>Integrated separate RTC with its own battery (in operation even when the main battery is discharged)</li> <li>Sending fault statuses to the administrator on mobile (for now only Android)</li> <li>Backup battery (4 hours of operation without deep mode)</li> <li>Voice confirmations of chip acceptance/rejection</li> <li>Voice warning when disconnecting power or losing Wifi connection</li> <li>Remote settings management</li> <li>Support for manually setting summer and winter time</li> </ul>

C++, NodeJS, Websockets, MQTT, Platformio, Arduino framework

ESP32

<ul> <li>Hardware and software development from "green meadow"</li> <li>Production of a printed circuit board prototype</li> <li>Development of UV illumination unit (ESP32)</li> <li>Test application</li> <li>Development of terminal device emulator for simulating network protocols</li> </ul>

<ul> <li>Using highly luminous LED panels with cooling strips</li> <li>Basically the same brightness of individual panels</li> <li>Inconspicuous routing of cables through structures</li> <li>Dismantleable and easy-to-assemble joints</li> <li>3 circuits, remote controls, amplifiers to change the brightness</li> </ul>

C++, Platformio, Arduino framework

ESP32

<ul> <li>Auto shut off timer</li> <li>Control via bluetooth from a mobile app or PC</li> <li>Easy setting of glow time on the command line</li> <li>Easy to remember time formatting - e.g. 40sec, 5min, 2h</li> <li>Display the currently remaining time</li> <li>Uninterrupted timer countdown when disconnecting/connecting mobile phone</li> </ul>

C++, NodeJS, Platformio, Arduino framework

ESP32, VPS

<ul> <li>Mobile door operator</li> <li>Opening doors using a web application</li> <li>By logging in users</li> <li>Possibility of operation online or offline</li> <li>Integration directly into an old or new home intercom</li> <li>User Management</li> </ul>

NodeJS, JS, MySQL, Redis, SocketIO

E-shop connected to company IS and payment gateway. Possibility of online purchase of tickets for PVA Letňany exhibitions. It uses the Redis cache.

NodeJS, Websockets

<ul> <li>Display current information for visitors</li> <li>Save content for offline mode</li> <li>Displaying information from the corporate intranet</li> <li>Animated elements, attempt to use hw rendering (support not guaranteed by manufacturer)</li> <li>Possibility of direct display via HDMI (e.g. using RaspberryPI4)</li> <li>Originally designed for Rock64 (Raspberry Pi clone)</li> <li>Possibility of operation on the internal TV viewer</li> <li>Integrated SignageOS support (run in application)</li> <li>Display Timeline</li> <li>Remote control and supervision</li> </ul>

C++, Arduino framework, Platformio

ESP32

<ul> <li>Smart TV network protocol emulator</li> <li>Responds on network or serial port</li> <li>Implemented several basic reports from leading manufacturers (Samsung, Panasonic, LG, NEC, Philips)</li> <li>Shows information about connected devices and sent messages on the display</li> <li>Developed for testing communication devices</li> <li>Prints debug output to USB/serial port</li> <li>Contains a web environment with a terminal for a clearer log</li> </ul>

JavaScript, NodeJS, Socket.IO

Android mobile handheld

Readers can work both online and offline. In online mode, scanned codes are immediately sent to other devices. Each reader synchronizes its code history with the server.

JS, NodeJS, Socket.IO

Company chat - User search, contact display, visual user search by photo

JS, NodeJS, Socket.IO

Call history, data is loaded from the backend part via socket.io communicating with the 2N exchange

JS, NodeJS, Socket.IO

JS, NodeJS, Socket.IO

<p> The task editor was created as a disagreement with the user-unfriendly task editor. </p> <p> residents had to frantically click through several pages to achieve the creation or change of a task's status. </p> <p> At first it was more of a joke for the intranet author, but then it started to be used by the majority of intranet users, because it really saved sometimes tens of minutes a day. </p> <p> The plugin uses datatable and socket.io </p>

PHP, JS, MySQL, Wordpress

Automatic collector of content from social networks Facebook, Instagram, Twitter, Vimeo. New posts are saved as articles. Displaying content on the web. Update using Cron. Developed for ŠKODA AUTO a.s.

PHP, JS, JQuery, Prestashop

E-shop for selling pizza. Prestashop code optimization, template coding. Requirement to use CSS2 to maintain IE8 support.

PHP, JS, MySQL

Manager for Prestashop <ul> <li>Allows you to edit orders faster</li> <li>Includes a campaign editor</li> <li>Import clients into the newsletter from CSV</li> <li>Search for duplicate product combinations</li> <li>copying images</li> </ul>

Borland C++ DOS, BIOS and DOS interrupt services

<p>The terminal was created as a debugging aid for a serial line.</p> <p> At the time (year 2002) it was problematic to use the serial port and control the communication in your own way. It was possible in Linux, but I didn't know it at that time. Although there was already a Hyperterminal in Windows, Windows did not allow direct access to the device and setting up the serial controller as needed. There was no chip management problem in DOS, but I couldn't find any ready-made tool.</p> <p> Thus, Terminal was born, originally a simple tool for monitoring messages on a serial line, which gradually grew into a tool used by several fellow programmers and thus deserved the development of its own visual environment. Among other things, the visual environment can also store background characters in dynamic variables before rendering the menu and restore the original characters after closing it.</p> <p> Today, Terminal, with its dependence on DOS, is rather a rarity. Of course, it is still possible to run it under DOS emulators, or emulated in Windows, but classic serial communication is gradually being replaced by USB and virtual serial lines, which it was not built for. Of course, it is possible that some emulators or versions of Windows can also emulate a serial controller, but it is very unlikely.<p> <p> If there are a few people who would like Terminal to make their life easier, I am thinking about transporting the Terminal to a Linux environment, to a web environment, but I am also thinking about a web version with ESP32. I already have some code fragments partially ready, so if anyone is interested, please get in touch. </p> <p> Many thanks to the authors of the SysMan application, where I could use the resident part to draw a lot of information on how to configure and control the serial controller. </p> <p> I make the code available as open source with the obligation to keep the author's name. </p>