Control rs232 webεργασίες

I need an app to created from the scratch, which must be able to control the bluetooth output devices that are connected to an android Tablet. When the Tablet will play music we should be able to change the output device from the app and hear the music from the device we choose. So, we need to have visible some buttons with the name of each BT device and when we hit a button we can hear the music from the device which corespons on the button.

...e-commerce application. Key functionality: 1. Online Ordering 2. CRM 4. Loyalty 6. Analytics 7. Integrations 9. POS System for Restaurant 10. Marketing tools / automations Additional details 1. Take Orders For Delivery, 3. Takeaway, 5. QR Dine In,  6. Catering and Reservation On Your Own Website &/or Mobile App for Restaurant Then everything the restaurant needs should be able to view and control in one simple to use system. Example : CRM Loyalty E-vouchers Analytics Integration I need a website for my own company where I can market the customers who buy this software from me. I also want 5-8 website templates to be prebuilt and ready to be sold with all the integration. I need a marketing automation software integrated into this so when customer&rsquo...

... Αυτόνομα συστήματα (Autonomous systems – AS) Internet Service Providers (ISPs) Πρωτόκολλα επιπέδου σύνδεσης Address Resolution Protocol (ARP) Reverse Address Resolution Protocol (RARP) Πρωτόκολλα επιπέδου δικτύου Internet Protocol (IPv4, IPv6) Internet Group Management Protocol (IGMP) Internet Control Message Protocol (ICMP) Πρωτόκολ&lambda...

I create an experiment on a coffee machine in which I want to control with many options on a display the extraction ever stops and how much water is running in phase. I am technically complete, I want to adapt this code to a board, my machine will work. With the scenario I give 90% is OK it definitely has many errors and many gaps, I want you to identify me and suggest me which arduino board or something else economical and which spare parts I will need further, such as screen. I can send you here an attachment where I show a simulation and a script How I want it to work. Δημιουργώ ένα πείραμα πάνω σε μια μηχανή καφέ &si...

Ζητείται προγραμματιστής για την κατασκευή γέφυρας σύνδεσης ηλεκτρονικού καταστήματος opencart με erp singular logic control. Απαιτείται αυτόματη ενημέρωση τιμών, διαθεσιμότητας σε &...

Εχουμε δημιουργησει μια ιστοσελιδα ηλεκτρονικου εμποριου και θελουμε να συνδεσουμε τις ελληνικες μεταφορικες εταιριες(κυριως την &gamma...

As a client in need of an experienced front end developer, I'm seeking an individual with specific skills and experience in HTML/CSS, JavaScript, Bootstrap, Saas, React, and Git. The successful candidate should also be adept at working with Bootstrap and Rea...Bootstrap, Saas, React, and Git. The successful candidate should also be adept at working with Bootstrap and React design frameworks. Key Requirements: 3-5 years of professional experience as a Front-End Developer. Proficiency in HTML5, CSS3, and JavaScript. Experience with Bootstrap, SaaS and jQuery experience. Good to have knowledge of front-end frameworks such as React. Experience with version control systems (e.g., Git) and package managers (e.g., npm). Familiarity with responsive design principles and cross-browser...

I am looking for an experienced mobile app developer to create a mobile app for IOS and Android devices. Mobile application to manage two devices: The objective is to develop an application to manage two devices via WiFi (can be expanded in the future). We have two devices: sauna and red light therapy panel. They all have a touch control panel and can connect to your mobile phone via Bluetooth and Wi-Fi. Many of the providers even offer you the mobile application already developed (as you can see in the video of the red light panel) but only for each product category. The idea is to make a similar application from which the two devices can be managed (time programming, lighting, power, etc.). And the history of uses/configurations is saved. Please clarify in the response to this...

I'm looking for a seasoned mobile app developer to create a mobile application for both IOS and Android devices. Mobile application to manage two devices: The objective is to develop an application to manage two devices via WiFi (can be expanded in the future). We have two devices: sauna and red light therapy panel. They all have a touch control panel and can connect to your mobile phone via Bluetooth and Wi-Fi. Many of the providers even offer you the mobile application already developed (as you can see in the video of the red light panel) but only for each product category. The idea is to make a similar application from which the two devices can be managed (time programming, lighting, power, etc.). And the history of uses/configurations is saved. Please clarify in the re...

...organized and saved into a customized Excel template. Additionally, the system should be designed to assign different user IDs with varying levels of access control. Key Requirements: - Develop an AI portal with the capability to extract table data from PDFs. - Organize and save the extracted data in Excel using customized templates based on the source PDF. - Implement a user management system that assigns different access controls to various user IDs. Ideal Skills and Experience: - Proficient in AI development and data extraction techniques. - Expertise in Excel automation and customization. - Strong background in user management and access control systems. - Previous experience with similar projects is a plus. The successful freelancer will be able to demonstrate a s...

I'm in need of a professional capable of migrating my existing Odoo 13 to Odoo 17 and my WooCommerce database to Odoo. There are several essential tasks that need to be completed in the process: - Advanced Inventory Management: Setting up a comprehensive inventory management system that allows for efficient tracking, control, and optimization. - Odoo Website Customization: I'm looking for customization of the Odoo website to better reflect and serve my business needs. - POS Customization: Tailoring the point-of-sale system within Odoo to ensure it's user-friendly, efficient and meets specific business requirements. - Multi-branch Capabilities: Implementing the necessary features to support multi-branch operations. The successful bidder will have: - Extensive experie...

I am seeking a freelance developer to lend me a helping hand here to complete a personal web project, which is a L2J server for a very small community of fans. The core web structure, including the registration page and forum, is in place. The tasks required are: - Configure owned control panel in a Debian machine, with an API for user registration, including email confirmation and password reset DB is in a different Debian host. - Connect owned forum to an OVH database,

...am in need of a skilled developer to create a high-quality Android casino app. Key Features: - User Registration and Login: Users should be able to create accounts and log in to play. - Casino Games: A variety of casino games will be integrated into the app to keep users engaged. - Payment Integration: The app should have secure payment gateways for in-app purchases and withdrawals. - Admin Control: I need a separate admin login with the capability to: - Adjust game rules: The admin should have the power to tweak rules to improve user experience. - Change game outcomes: Admin should be able to modify game outcomes to keep the experience fair and engaging. - Manage user accounts: The ability to oversee and moderate user accounts is crucial. Design Preferences: - The ...

I'm in need of a highly efficient roll forging solution, specific to small components. This solution should aim to: - High-level product quality - Minimise material waste - Have FEA abilities Special features I am seeking in this solution include: - Real-time monitoring capabilities for instant tracking and oversight - Remote control functionality for convenience and efficiency - Automated adjustment settings to maintain optimal operation I am primarily dealing with small components. Hence, an ideal candidate for this project would be someone with prior experience and a deep understanding of developing solutions for small component roll forging. Knowledge of FEA is a must. Looking forward to a seamless cooperation that will deliver an exceptional output.

Overview We are in search of an exceptionally talented designer to craft an innovative and intuitive mockup for a web application focused on optimizing the recruitment process for various users. It is crucial that the submitted designs are entirely original. Submissions that utilize pre-existing templates or closely mimic designs from platforms like ThemeForest will be outright rejected and may receive a negative review. The design must adhere to the features specified in our project outline while showcasing a distinct and fresh aesthetic. Design Requirements 1. User Management -User Registration/Login: Separate workflows for candidates and companies. Each form should gather specific information as per the provided documentation. Design should clearly differentiate between these t...

...graphic designer/animator to create 21 high-quality assets for our website, Dealer Essential. These images will be used to enhance our Products page and other sections of our site, highlighting the benefits and features of our software for small-medium dealerships. Project Details: - Delivery Timeline: 2 days - Number of assets: 21 - Page Link: Design Spec Example: ---Experience in creating professional, high-quality website images/animations ---Ability to understand and visually communicate the key benefits and features of our software ---Fast turnaround time without compromising on quality ---Familiarity with the automotive dealership industry is a

I want 3d Simulation or rendering of smart inventory control system, in which lift mechanism connected with vibration sensors and conveyor is connected with ultrasonic sensor along with Arduino uno, esp wifi module, screen and motor driver all in software.

I am currently working on a project where I need to implement the flow to send and receive invoices from a DEX vending machine on iOS. To simulate ...receiving invoice adjustments in the applications. Redpark provides an SDK() and demo software for sending and receiving data, which helps in understanding the basics. However, I am currently unable to find the correct sequence to successfully send and receive invoices to a DEX machine. I understand that there is a protocol and control characters required for communication, but so far, I have not been successful in the implementation. I am looking for someone with experience in implementing the transfer protocol for consultancy or for the development of this implementation.

Are you a driven sales professional ready to take control of your income and achieve unparalleled success? Buzz Circuit Media is seeking highly motivated Sales Outreach Specialists to expand our client base for our social media management services. With our commission-only structure and powerful tools, you can unlock your earning potential and enjoy the benefits of recurring passive income. Compensation Structure: 10% commission on the monthly revenue generated by Tier 1 clients (client pays $199/month) 15% commission on the monthly revenue generated by Tier 2 clients (client pays $399/month) 20% commission on the monthly revenue generated by Tier 3 clients (client pays $599/month) Bonus Structure: $250 bonus when a client reaches 3 months $500 bonus at 6 months $1,000 bonus a...

I'm on the lookout for an expert who is incredibly adept and experienced in Microsoft SharePoint and particularly MS Viva suites. The need is to improvise and enhance a few specific functions which include: - Document Management: However, it remains undecided whether the structure would be folder-based or metadata-based tagging. Suggestions are welcome. Also, make sure version control is facilitated. - Collaboration Tools: You would be required to include and set up some essential collaborative tools like document sharing, team calendars, and discussion boards to ease out internal communication and coordination. Moreover, a fundamental task would be to automate workflows to increase operational efficiency. The ideal candidate would be someone equipped with a scrupulous unders...

Hello! We're looking for an expert in Android or Flutter for an urgent project. Currently, we have the system connected on Android, but the app is lacking in many aspects. We need to connect the system on Flutter and de...expert in Android or Flutter for an urgent project. Currently, we have the system connected on Android, but the app is lacking in many aspects. We need to connect the system on Flutter and develop the functionalities we need. In Android, we need to implement an ID confirmation and a dropdown category indicating products delivered in the main warehouse, among others. This will help us keep better control over the system. It's urgent, and we need to complete it today! If you have experience in Android or Flutter and can help us with this, please contact us ...

...for an experienced professional in Power Factory and Electronics. The project will involve a mix of tasks such as circuit design, power system analysis, PCB layout design, as well as potentially designing a circuit, simulating power systems, and developing control systems. Ideal Skills and Expertise: - Proficiency in Power Factory and Electronics - Prior experience in circuit design, power system analysis, and PCB layout design - Capability to undertake tasks related to designing circuits, simulating power systems, and developing control systems. - Strong problem-solving ability The task involves working on a project where knowledge and expertise in Power Factory and Electronics is crucial. The right candidate should be able to provide support in a wide range of tasks a...

I require an expert Flutter developer to create a tailor-made billing app for my business. The main functio...require an expert Flutter developer to create a tailor-made billing app for my business. The main functionalities encompass invoicing, expense tracking, and inventory management. Key Requirements: - Development of an app using Flutter. - Design an easy-to-use interface for invoicing. - Develop expense tracking tools to monitor business costs. - Implement inventory management functions to help control stock levels. Ideal Skills and Experience: - Proficient in Flutter development. - Previous experience designing and developing billing apps. - Familiar with developing invoicing, expense tracking and inventory management features. - Portfolio showcasing previous applications ...

As an intermediary between apparel factories in China and our business, we're seeking a professional with expertise in quality control, logistics coordination, and sourcing fabricants for minor garment alterations. Key Requirements: - Quality Control: You should have a skilled eye for inspecting garment quality and ensuring our standards are met. - Logistics Coordination: You'll be responsible for coordinating the smooth transport of goods from China to other countries. - Dealing with manufacturer: you will be the link between the fabricant and us, so we will need a bilingual person (English and Chinese). - Fabricant Sourcing: You should be able to help us find a fabricant that can make small alterations to common garments. Customization: - The level of customiz...

I'm seeking a savvy developer to create a 1D barcode (UPC, EAN) inventory management system. This should then be integrated with an existing product management system. Key requirements: - Design and develop a user-friendly barcode inventory control system - Experience with 1D barcodes, preferably UPC and EAN - Capability to integrate with existing product management software The main users of this system will be store staff members. Therefore, it should be easy to navigate, and seamless in functionality to support a fast-paced retail environment. Expected expertise: - Proven experience in building similar inventory management systems - Proficiency in working with 1D barcode technology - Expertise in software integration - Solid understanding of user interface for non-tec...

Se busca desarrollador de Python con amplia experiencia en: • Scrapy. • Django. • Manejo de servidores Linux. • Pandas. Aparte de esos conocimientos debe cumplir estos requisitos: • Debe de dominar el castellano. • Incorporación inmediata...de esos conocimientos debe cumplir estos requisitos: • Debe de dominar el castellano. • Incorporación inmediata. • Disponibilidad mínima diaria de 6 horas. • Dispuesto a cumplir un horario fijo. • Dispuesto a mantener reuniones telemáticas diarias. • Diariamente debe remitir al final de su jornada las horas empleadas, un resumen del trabajo realizado así como subir commits de su trabajo. • El control de las horas de trabajo se realizará po...

I'm looking for a skilled developer to create a phone control application that will run on my Windows PC. The primary function of this application should be remote control of both Android and iOS devices. Key Requirements: - Development of a phone control application compatible with Windows OS - The application should support remote control functionality for both Android and iOS devices - Ensuring smooth and responsive performance of the application - Interested in any additional features or suggestions for improvements from the developer Ideal Candidate: - Proficient in app development for Windows OS - Experienced in creating remote control applications for mobile devices - Familiarity with both Android and iOS operating systems - Excellent probl...

I am in need of a professional and experienced developer to create an e-commerce website that enables online sales. Key Requirements: - Develop a user-friendly e-commerce platform on Wix - Implement product search/filtering functionality to help users navigate the site - Set up multiple payment options to facilitate seamless transactions - Integrate inventory management for efficient stock control The ideal candidate should have prior experience in e-commerce website development, particularly with Wix. Your understanding of e-commerce best practices and willingness to take my requirements into careful consideration will be highly valued.

I'm looking to transform my Linux laptop into a hosting server to sell hosting plan...laptop into a hosting server to sell hosting plans. I will provide root access for setup and maintenance, so you'll have full control to configure and manage the server. I prefer using cPanel as the hosting control panel for managing hosted sites. The main tasks and requirements for this project include: - Setting up the laptop as a hosting server - Installing and configuring cPanel - Advising on any additional software or configuration needed to make the hosting business-ready - Ensuring the server is secure and properly maintained Ideal applicants will have experience in: - Linux server administration - Setting up hosting environments - cPanel and web hosting control...

...indentificacion. - Control de Stock: El sistema debe contar con una sólida función de gestión de stock. Los puntos clave incluyen: - Seguimiento de entradas y salidas de productos: Cada vez que un producto entra o sale del inventario se debe documentar adecuadamente. - Seguimiento Histórico: También se debe llevar un registro detallado de todos los movimientos que ha experimentado un producto. - Permisos basados en roles: los diferentes roles en la empresa (administrador, personal de almacén, personal superior de almacén, gerente de recursos humanos) deben tener diferentes niveles de acceso y permisos. El administrador tendrá acceso completo, mientras que el personal del almacén solo podrá actualizar los ...

I need a professional to create a comprehensive retrospective drawing for a retaining wall that has already been installed. This drawing is vital for proving that the wall meets UK building control standards and is sufficient. Key Deliverables: - The drawing must include the dimensions of the retaining wall. - The drawing must include the material specifications of the retaining wall. Communication: I prefer communication via email for updates and revisions. Ideal Skills and Experience: - Proficiency in UK building control standards, specifically Building Regulations Approved Document A. - Previous experience in creating retrospective drawings for retaining walls. - Strong attention to detail when it comes to dimensions and material specifications. - Excellent communicati...

I'm looking for a skilled engineer who can design a self-supported steel chimney for a metal manufacturing plant. This chimney will be integral to industrial emissions control. Tasks Include: - Tailoring the design to accommodate the specific needs of a metal-manufacturing environment. - Incorporating robust safety features and compliances for high-temperature metal emissions. Ideal skills: - Structural Engineering - Industrial Design - Knowledge of industrial emissions standards - Experience with metal manufacturing processes.

I have an existing Arduino and BBC Micro:bit devices and I'm seeking a skilled freelancer to help me connect them for a home automation project. Key Responsibilities: - Implement a system that can control lighting, monitor temperature and provide security surveillance - Ensure the system can be powered using solar, wind, battery and be connected to the internet. The ideal candidate should have experience in: - Arduino and BBC Micro:bit programming - Home Automation projects - Solar and wind energy integration - Internet of Things (IoT) connectivity - Strong understanding of security surveillance systems Your role will involve setting up a reliable, efficient and user-friendly home automation system. The ability to integrate multiple power sources and ensure the system is in...

...your own schedule and work from wherever you prefer – local or online, or a combination of both. We're looking for: 1. Multiple Sales Associates – both experienced professionals and those new to sales are welcome to apply. 2. Passionate individuals who are excited to share our premium Sri Lankan products with new markets. Note: This is a 100% commission-based job, offering you the freedom to control your earnings and achieve a lucrative return based on your performance. Interested? Apply now and let's discuss how you can achieve success with our team!...

...phone line and create a PDF with QrCode and then capture the money but it doesn't activate the phone line or send the pdf. We also want to integrate a few new suppliers via their API so we need new functionalities added to the plugin. -woocommerce plugin FIX - linux management - deploy on linux, create new features - long term maintenance Gitlab version control - create pipeline to our staging server and do version control RESPONSIBILITIES: - Integration of new B2B APIs - New payment gateway integration - - Implementation of bug fixes and performance improvements. - Regular software updates and security patches. - Feature additions and enhancements. Skills and Experience: - Proven experience in maintaining e-commerce solutions. - Ability to work independently...

...this project. - **Role-based Access Control**: I want the dashboard to have role-based access control. This means that users will have different levels of access based on their roles within the organization. Your responsibilities will include the following: - **Data Retrieval and Manipulation**: You will be tasked with retrieving data from a database and manipulating it to be displayed in a meaningful way. - **User Authentication and Authorization**: A key part of this project is ensuring that the dashboard is secure. You will need to implement a robust user authentication and authorization system. In summary, I'm looking for a PHP developer with experience in building custom admin dashboards, data visualization, user management, and role-based access control...

...seeking a skilled professional to design and build an AIS 140 standard GPS device with a primary focus on fleet management. The device will need to have the following features: - Real-time tracking: It should be able to provide up-to-date location information and movement status of the vehicles. - Geo-fencing: The device should support the creation of virtual geographic boundaries, and alert the control center when the vehicles breach these boundaries. - Fuel monitoring: It should be equipped with technology to monitor fuel levels in real-time, allowing for efficient fuel management. The device should support the following communication interfaces: - 4G/LTE: To ensure stable and fast connection for data transfer. - Bluetooth: To allow for wireless communication with other device...

Develop a whistleblowing ma...Analysis: Statistics by type of report, department, severity, etc. Temporal Trends: Graphs of monthly, quarterly, and yearly trends. Customizable Dashboard: Customizable widgets for different views and levels of detail. Security and Confidentiality Anonymity: Options to submit reports anonymously. Data Protection: Compliance with data protection regulations (GDPR). Secure Access: Robust access control to ensure only authorized personnel can manage reports. Additional Features Multilingual Support: Interface available in Spanish and English. Data Export: Ability to export data in common formats (CSV, PDF). Integration with Existing Systems: API for integration with HR systems and other management platforms. A Lookerstudio integration wou...

...Responsibilities: - Develop and implement robust safety measures addressing key anticipated issues including Crowd Control, Medical Emergencies, and Fire Hazards. - Review and approve all safety arrangements and plans prior, during and after the event, - Continuously monitor safety compliance during the event. - Quality control - Auditing and monitoring - Document management - Policy and procedures implementation - Other events safety related matters Skills and Experience Required: - Proven experience in large scale event safety management. - Expert knowledge of various safety threats and first-hand experience in planning for and mitigating these issues at events. - Excellent crisis and crowd control management skills. - Relevant qualifications in safety an...

...create a straightforward app for Zoom. This application will assist the provision of EMDR (Eye Movement Desensitization and Reprocessing) therapy online, by animating a dot left and right on the screen. Here are the key details and requirements: Key Features: - Animation of a simple dot moving left and right on the screen - Integration with Zoom API for seamless operation in Zoom - Capability to control the speed of the dot's movement - Feature enabling the dot to be superimposed over the video of the therapist or provide a background image. You can copy the basic function of this website. (click the link that says, 'use the basic version for free'. Design Preferences: - The moving dot should be a simple, unembellished design but option to change colour and si...

...1. Manage a team of video editors, motion graphics artists, and post-production staff, delegating tasks, providing feedback, and fostering a collaborative and supportive work environment. 2. Mentor junior editors and provide training opportunities to enhance their technical skills, creative abilities, and professional development. Quality Assurance and Technical Expertise: 1. Conduct quality control checks on video content to ensure technical accuracy, visual consistency, and adherence to client specifications and brand guidelines. 2. Troubleshoot technical issues, software glitches, and hardware malfunctions as needed, utilizing advanced knowledge of video editing software, plugins, and hardware equipment. Software Proficiency: 1. Demonstrate expert-level proficiency in video ...

...be well-versed in security practices and able to handle the responsibilities that come with that level of access. Ideal candidates should have: - Extensive experience in managing Cpanel and WHM - Strong knowledge of DNS configuration and management - Proficiency in setting up email services - The ability to work with root level access securely and responsibly. Issue: This system does not control DNS for the “” domain. You can install the suggested “DKIM” record locally. However, this server is not the authoritative nameserver. If you install this record, this change will not be effective. Contact the person responsible for the “”, “”, “”, and “” nameservers and

I need a script to control my Camera3D from a direct top down view. I want to replicate this camera from this 2d project but for my 3d project : So the camera will be set to a fixed height above the player's position while following the player's position but can also freely move toward the mouse position as long as the player doesn't hit the edge of the screen.

I need a Google Sheet that will serve as a simple database for my business. Here's what I...primary function of the sheet. My team will need to manually input data into the sheet on a regular basis. The sheet should be well-organized to easily accommodate new entries without compromising the existing data. - Access control: Only I, as the owner, should have the permission to edit the sheet. It's important that this access control is robust to maintain data integrity and security. I'm seeking a freelancer who is proficient in Google Sheets and can deliver a simple, user-friendly, and secure solution for this project. Experience in data management, user access control, and business data storage would be a plus. Your bid should include a brief overview of...

...experience High download and browsing speed Compatible and responsive with all devices, programs and screens English roll Dark mood Register with Google and Facebook Student, parent, and coach registration templates Messages, notifications, favorites, ratings and reviews Open to an unlimited number of teachers to download and sell their courses students progress tracking Control panels, admin, trainer, and student General and analytical reports on everything on the site and financial reports Financial portfolios for students Electronic payment shopping cart The system of basic and discounted prices, discount coupons, and packages Main page and sub-pages by categories Authorize site supervisors to complete tasks - Highlighting...

...It's this belief that led me to establish the Awuor Support Initiative, aiming to provide equal educational opportunities to children who are often overlooked and underserved. Donate here Alice, Ben, and Emma represent the faces of countless children in Uganda who are eager to learn but face barriers beyond their control. Alice, at 6 years old, is full of curiosity and potential, while Ben, aged 14, and Emma, 8 years old, are at critical stages in their academic journey. Yet, without financial assistance, their dreams of receiving a quality education may remain out of reach. Your support will directly impact the lives of these three children by covering their school fees, purchasing essential supplies, uniforms

I'm seeking a skilled PLC programmer to de...timed sequence for pneumatic valves used to operate four dampers in a wave pool. This PLC program aims to control the intensity of the waves. The functionality should include: - Sequential opening and closing of the dampers - Pneumatic valve control via PLC interface Ideal skills and experience: - Significant experience in PLC programming - Understanding of pneumatic valve control - Knowledge on wave pool operation preferred - Ability to optimize for energy efficiency and performance - Problem-solving and analytical abilities to troubleshoot and improve system functionality. This challenging task calls for a solution-oriented mindset and innovative thinking. Increased wave control will result in a more eng...

We are seeking an experienced developer or team to create a comprehensive web software and database system for the remote monitoring and control of cathodic protection stations (SKZ) equipped with TE-RCU control units. This project involves developing web applications, database design, and integration of communication modules for real-time data acquisition, SMS/GPRS control, and SCADA system interfacing. More details will be sent in private.

I'm looking for a skilled Spring Boot developer to help me set up role-based security for my application. The main goal of this is to ensure proper authorization across di...to restrict access to various functionalities based on the user's role. - The application will have three types of users: Administrators, Regular Users, and Guests. - Among administrators, I need a specific functionality for them to set up role permissions. Technical Requirements: - Proven experience with Spring Boot and security implementations. - Excellent understanding of role-based access control. - Strong knowledge of setting up and managing user roles. I'm looking forward to collaborating with a professional who can ensure the security and authorization aspects of my application are well ...

I'm seeking a skilled PCB circuit designer to create a digital circuit f. The primary function of the circuit is PWM Motor Speed Control Key requirements: Input supply voltage: DC 2.5V-25V The maximum output power: 350W The maximum continuous output current :15A The overload and short circuit protecting current is 25A PWM frequency: 25-30kHz Duty Cycle adjustable: 0-100% The operation environment temperature:-20℃-40℃ Ideal freelancer would have: - Proven experience in digital PCB circuit design - Strong knowledge of signal amplification principles - Familiarity with radio technology and its requirements - Ability to optimize circuits for low gain