Install virtualbox run usb jobs
I need an HVAC engineer to install commercial RTU systems for heating, cooling, and air exchange in a new setup with no existing ductwork. Key Responsibilities: - Designing and implementing a new ductwork system tailored for commercial RTU units - Installing the RTU systems efficiently and safely - Ensuring the installation meets all relevant safety and quality standards Ideal Skills and Experience: - Proven experience with commercial HVAC installation - Strong knowledge of ductwork design and implementation - Relevant HVAC certifications and licenses - Excellent problem-solving skills and attention to detail
...agreements with the U.S., and its geographic proximity. Our aim is to produce an extensive selection of mid to high-end quality furniture products. We are committed to leveraging sustainable practices and utilizing local resources wherever feasible, which not only reduces costs but also bolsters the local economy. **Funding Objectives:** 1. **Machinery Acquisition:** Allocate funds to procure and install advanced machinery essential for the efficient production of furniture. This will ensure high precision and quality in our manufacturing processes. 2. **Raw Material Sourcing:** Invest in acquiring high-quality and cost-effective raw materials that will guarantee the durability and aesthetic appeal of our products, meeting the expectations of discerning customers. 3. **Tale...
...Needs to continually Synch All necessary product images and descriptions are ready. Ideal skills and experience for this job include: - Familiarity with Shopify and Facebook business page - Experience in product uploading - Attention to detail ** Previously, many years ago I had integration with another Shopify account for a different company and my same facebook business page. I have tried to install the Shopify app and link it to my Facebook account but it is telling me I need to remove my previous but that is where the problem is happening. I can not remove old link. So this project is for you to a) remove old shopify link from my facebook b) integrate the new shopify store to my facebook Please only bid for this if you can start straight away. Do not send me messag...
...protocols) - it should be used with nginx for serving streams. - stream checker auto restart stream after x seconds option if stream disconnect try reconnect, possible to add multiple stream sources (if first stream disconnects auto connect second source and start transcoding - reconnect on disconnect streams setting setup (put X seconds) - reverse proxy setup, auto install by adding root user pass ssh port ip adress and auto install -> when installed, it should forward from server ip forwared ports in reverse proxied servers iptables tables. - manage server ( overview transcoding server, change ports for streaming, rtmp/hls/http etc), see if reverseproxy is installed, show reverseproxy ip adres, possible change main server ip adress, reinstall reverseproxy - nginx sett...
I need a professional to install, configure, and secure KiwiIRC on my Ubuntu Linux server. The server is running Linux Ubuntu, and I want specific focus on implementing robust security features. Key Responsibilities: - Install KiwiIRC on my Ubuntu server. - Configure KiwiIRC according to best practices. - Implement a solid firewall configuration to protect the server. - Set up SSL/TLS for secure data transmission. Ideal Skills and Experience: - Proficiency in Linux, specifically Ubuntu. - Extensive experience with KiwiIRC installation and configuration. - Strong understanding of firewall setup and configuration. - Previous work involving SSL/TLS implementation. - Excellent problem-solving skills and attention to detail. I'm looking for someone who can do this profes...
Title: Development of a Self-Service POS System for 24/7 Sales Container I am looking for an experienced developer (or small team) to create a custom self-service POS system for my 24/7 sales container. The system should run on touchscreen hardware and connect to a central server for product and sales management. The goal is to have a reliable, user-friendly, and scalable POS solution that streamlines operations and enhances customer experience. Requirements: Hardware Integration: Touchscreen display for user interaction. EAN barcode scanner for product identification. Receipt printer (e.g., Epson or Star Micronics). LAN connection support for real-time data synchronization. Software Features: Product Scanning: Scan EAN barcodes to display produc...
I need OpenEMS () installed on my new Ubuntu 22.04 LTS server, without using dockers. The installation should use the default configurations of OpenEMS. Ideal Skills and Experience: - Proficient in Ubuntu server management - Experienced in installing OpenEMS - Familiar with non-docker installations Please note that no additional software or tools are currently required for this project.
I'm seeking a qualified technician to install WWAN cards on a PC at my location in Zurich. This is an on-site task scheduled for Wednesday, 29th, around lunchtime. The technician must ensure that the cards are installed correctly and functioning as intended. Key Requirements: - Expertise in PC hardware installation - Prior experience with WWAN card setups - Proficient in troubleshooting and ensuring the proper functionality post-installation
I've encountered a critical error while trying to set up a fresh install of SuiteCRM 8.x on my Cloud VPS. The error message indicates a problem with Symfony's Dependency Injection component. Details: - The installation is unmodified and should be clean. - The error states: "You have requested a non-existent parameter "26"." - The issue occurs at line 2089. I need an experienced Symfony developer to diagnose and rectify this issue as soon as possible.
I'm seeking a skilled programmer to write an Arduino code for a BQ25887 Charger 5 click USB charging IC board. The code should manage the initiation of charging for two Lion batteries, ensure cell balancing, and support 5V 3A charging from any standard adapter. I am using a MIKROE Balancer 5 click. () Key Requirements: - Charging condition: Need to charge two separate single cell battery of 2000mah via USB charging of around 5V 3A. - For each individual cell, the max charging voltage should be 4.2V and the maximum charging current for each battery should be 1A. - The code should allow for automatic initiation of the charging process. - Enable cell balancing to maintain cell voltage equality. - Implement fault recovery (e.g., reduce current, stop charging)
...cuts. Gas leak detector adopts Easy-to-install Design, can be used by plugging directly into the power socket to detect leaked gas. Low warm up time (<1 Minute) Reboot system button LED with Alarm indicator, state indicator and power/low battery indicator. Type 2: Gas leak detector with Mobile App Ability to detect LPG(Methane), natural gas, coal gas, gas fuel, artificial gas, liquefied petroleum gas, liquefied natural gas etc. Alarm in case of Gas leakage. Digital readout of the GAS concentration Speaker to alert (85 Db) on Gas leakage Low battery warning Support 230 V 50 Hrtz electricity input Should have Type C plug for India users. Intuitive Design Include automatic battery backup in case of power cuts. Gas leak detector adopts Easy-to-install Design, can be us...
My current ICTFAX installation on a Linux server has issues. While I can send faxes without a problem, receiving faxes, the fax-to-mail and mail-to-fax features, and user registration are not working correctly. The original service provider has become unresponsive, and I'm looking for an experienced professional who could either fix my existing setup or install a reliable open-source alternative on my server. Critical Features to Fix or Add: - Mail-to-Fax and Fax-to-Mail functionality - User Registration System I am open to both options - repairing ICTFAX or switching to a new web app. The ideal candidate for this job should have extensive experience with ICTFAX and Linux servers, as well as expertise in installing and managing open-source web applications. Please note that I...
I'm looking for a skilled professional to install reCAPTCHA v2 on my WordPress website's contact form. Key Requirements: - Experience with WordPress and its plugins. - Proven track record of implementing reCAPTCHA v2. - Ability to ensure that the CAPTCHA does not hinder user experience. The goal is to prevent spam while maintaining a smooth communication channel for my site visitors.
Project Proposal: Installation and Configuration of an Emulator to Run the Worldcoin App on a Computer Project Objective Successfully install, configure, and run the Worldcoin mobile application on a computer, ensuring all app functionalities are fully accessible and operational, simulating usage on a mobile device. Requirements Identify and configure the optimal emulator: Must be compatible with the Worldcoin application. Ensure smooth performance without interruptions. Validate proper functionality: The app should launch, authenticate, and perform all required functions, including biometric recognition if necessary. Additional support (optional): Provide alternative solutions if the emulator has limitations. Technical guidance if the app requires additional configur...
...developer to maintain and update my Mac desktop app which interfaces with a USB device. The app requires user interface updates, error handling and bug fixes, as well as implementation of additional features based on user requests and internal decisions. Key Tasks: - Overhaul of the user interface - Debugging and error handling - Integration of additional features - Improvement of device compatibility You will also be expected to enhance user settings and ensure the app is compatible with a wider range of devices. The app has detailed and updated documentation, which will provide guidance and insight into its current functionalities and future needs. Ideal Skills: - Proficiency in Mac app development - Experience with USB device interfacing - Strong UI/UX design skill...
I'm encountering an issue with my Windows Device Manager where my SAMD21 microcontroller is not being recognized. The microcontroller is connected via a USB cable, and I need assistance in diagnosing and resolving the issue. Ideal Skills and Experience: - Proficient in Windows Device Manager troubleshooting - Experienced with SAMD21 microcontroller - Knowledgeable in USB interface connections - Familiar with driver update procedures - Capable of interpreting and addressing error codes
...(Raspberry Pi or Arduino) Additional components: breadboard, jumper wires, power supply, etc. Responsibilities: Design and set up the hardware system. Connect sensors to the microcontroller and test individual components. Ensure the components work properly and troubleshoot wiring or connection issues. Assemble everything in a functional system. 2. Software Development & Integration: Responsibilities: Install and set up the necessary libraries for Raspberry Pi or Arduino. Libraries like , hx711py, and Adafruit_TCS34725 for the respective sensors. Develop Python scripts for each sensor (moisture sensor, load cell, and color sensor) and ensure they work individually. Integrate the sensor scripts into one cohesive program that collects, processes, and displays data. Validate the...
I'm seeking a professional with WordPress expertise to install a portfolio template on my site. The website will primarily showcase my web design projects. Key requirements include: - Installing a suitable WordPress template - Customizing the template to highlight my projects effectively - Ensuring the website is responsive and user-friendly Ideal candidates should have prior experience with WordPress portfolio templates, web design, and ensuring sites are visually appealing and easy to navigate.
Project Description: ris (really intelligent system) is an AI assistant that helps people plan hangouts in group chats as well as one-on-one. Refer to a similar project here: Preferred platform: - iMessage or SMS is ideal - WhatsApp and Discord are acceptable User flow: 1. The user clicks on a link to install the agent 2. ris sends people a greeting message like “Hi! I’m ris, your chat assistant” 3. The user adds ris to their existing group chat 4. ris introduces itself in the group 5. Whenever a question is asked with the keyword “ris” or “Ris”, ris provides a response in the group. The bot should also be able to initiate a conversation without being tagged or mentioned. AI model considerations: - Almost all of ris’ responses shou...
...microphone for audio. That’s it! No complicated setup, just click, record, and you’re good to go." [Section 6: Pricing & Call to Action - 2:40] Background music brightens, upbeat tone. [Visuals: A call-to-action screen with the app logo and download button.] Narrator: "And the best part? Screen Recorder Pro is completely free to use—no ads, no hidden costs, and no subscriptions. Just download, install, and start creating high-quality videos instantly." "Ready to create professional-looking videos with face tracking today? Download Screen Recorder Pro now and take your content creation to the next level." [Outro - 3:00] Background music fades out. Narrator (Cheerful): "Thanks for watching! Don’t forget to like, subs...
I am seeking a skilled designer and contractor who can both plan and execute a remodel of my small master bedroom. The goal of this project is not only to enhance the room's aesthetic with a romantic/rustic design, but also to significantly increase its storage capacity. Key Aspects of the Project: - Design and implement built-in wardrobes - Create efficient under-bed storage solutions - Install stylish and practical shelving units - Potentially incorporate a Murphy bed Ideal Skills and Experience: - Expertise in romantic/rustic design - Proven experience in bedroom remodels - Prior work with custom storage solutions - Ability to design and construct a Murphy bed - Strong communication skills for regular project updates Person must be in the Rhode Island or southern Massachu...
I'm looking for an experienced PHP developer to install a PHP script on my shared hosting server. The installation does not require any modifications to the script, so the ideal freelancer would be someone who can handle the installation process smoothly and efficiently. Key Requirements: - Proven experience with PHP - Familiarity with shared hosting environments - Ability to install scripts without modifications Please note that the exact directory for the installation hasn't been decided yet, so some flexibility is appreciated.
I'm looking for an experienced freelancer who can help me train a deep learning model on my Jetson Orin AGX with Jetpack 6.2 and Deepstream 7.1. The goal is to detect garbage in my garden using a USB camera. Your tasks will include: - Creating and configuring C++ and Python examples for the detection of garbage - Utilizing CUDA for optimized processing - Providing guidance on machine configuration for optimal performance Ideal skills for this project include: - Extensive experience with NVIDIA Jetson platforms - Proficiency in C++ and Python, particularly in the context of Deepstream and Jetson - Familiarity with garbage detection models - Experience in configuring and optimizing machine performance This project requires a keen understanding of AI and deep learning, specif...
... our Theme is ready and can be used easy. I have instlled the theme and everything is fine we have this theme: Step #1 - Create Header Menu and Footer Menu add Pages Step#2 - Change content of each pages i will give u the Text and the images and will help u with Step#3 - install translate Language we need few languaes what i will translate it by my self here the user when he access to our webiste he should get Popup where he can select his Favorite Languge - Clean up the Theme Remove all unneccseery pages , files , take backup of DB and theme Ideal Skills and Experience: - Proficient in WordPress development - Experienced in site design and layout edits - Skilled
You MUST do the work FIRST, consider this a "CONTEST". 1. You create the WORDPRESS SITE on YOUR SERVER (or on my server if trust me), show me, and BID. 2. I AWARD, PAY Milestone, and then you send Wordpress Template/Theme and SQL database/data. 3. I IMPORT your SQL into my Wordpress mysql and install your Template and TEST. Then I release 2nd Milestone and give you a PERFECT rating if all works well. I'm looking for a skilled WordPress developer who can create a WordPress template that closely replicates the design of my current website. Key Requirements: - Proficiency in WordPress development - Strong understanding of web design principles - Ability to replicate design elements accurately - Creative thinking for potential design improvements Please note, whi...
I need an experienced system administrator to help me install a self-signed SSL certificate on my Ubuntu server running Apache. Skills Required: - Proficiency in AWS Ubuntu Linux - Expertise in Apache web server configuration - Experience in SSL installation, particularly self-signed certificates ( we need to install free ssl) The task involves configuring the server to use the SSL certificate, ensuring secure connections are properly handled, and testing the configuration for functionality and security. Please provide evidence of similar work if possible.
We are looking for an experienced WordPress developer to build a website for selling virtual phone numbers and providing OTP services. The website will require integration with Twilio API for number management and OTP delivery. The ideal candidate should have strong experience with WordPress, API integration, and WooCommerce. Key Deliverables: Website Setup: Install and configure WordPress on our hosting server. Set up a professional and user-friendly design. Twilio API Integration: Integrate Twilio's Phone Number API to display available numbers dynamically on the website. Enable users to purchase numbers directly from the website. Configure Twilio's SMS API for OTP delivery. WooCommerce Setup: Implement WooCommerce for e-commerce functionality. Configure payment gat...
My name is Koid, and I am interested in purchasing the Run Tracker app (regular license) for use with my team. I have downloaded and tested the app, and I would like to customize it for a "flyer delivery" application to enhance my current operations. I currently have an older app that is outdated, and I now use third-party apps for live GPS tracking. However, these solutions lack some of the functionality I need, such as photo uploads. Below is a detailed list of the customizations I would require for the app: 1. Live GPS Tracking: Enable real-time tracking of workers in the field. 2. Photo Upload with Geotags: Add functionality for users to take and upload geo-tagged, timestamped photos as proof of work. 3. Offline Mode: Ensure the app works offline and syncs data (li...
I'm looking for a professional with in-depth knowledge of Invision Forum to install it on my website. The forum should utilize my existing database for user authentication. Key Requirements: - Install Invision Forum on my website - Ensure forum uses my database for user login and user roles - Familiarity with Invision's API and hooks Ideal Skills: - Proficiency in Invision Forum - Experience with website integrations - Knowledge in database management, specifically for user authentication Please note, the exact database system I am using is currently unknown. If you have experience with this kind of project, I would appreciate your assistance in identifying the system and implementing the necessary integrations. We using a dedicated windows server with plesk obsi...
...Meeting with Contractor To review the design binder Demolition To assess the space for any design modifications needed based on site conditions Back Framing To visually confirm framing complies with design vision Electrical and Plumbing Rough-in To visually confirm plumbing and electrical placement complies with design vision Cabinet Install To review cabinet inventory and review installation of cabinetry with cabinet installer Cabinet substantial completion install To visually confirm cabinet installation complies with design vision Appliance and plumbing delivery/installation To review plumbing and appliance inventory and visually confirm installation of these products complies with design vision Punch list walk through Walk the project with the client to develop the fin...
I need a professional who can install the TYPO3 CMS on my hosting and configure it for English and Arabic. Key Tasks: - Install TYPO3 CMS on my host - Enable two language support: English and Arabic - Implement necessary security enhancements I already have the content for both languages ready. Security is a top priority for this project, so experience with TYPO3's security plugins is a plus. Please ensure that the installation is secure and up to best practices. Ideal Skills: - TYPO3 CMS installation experience - Multilingual TYPO3 configuration - Security enhancements implementation - Arabic language support expertise (preferable but not necessary)
I'm seeking a skilled game developer to help create Bunker Run, an action horror game. Key requirements: - The game is designed from a first-person perspective and incorporates survival elements typical of action horror games. - The game is intended for PC, Console, and Mobile platforms, so cross-platform development experience is crucial. - Familiarity with horror game mechanics and entities will be a plus, as the game currently features 4 entities. Your expertise will ensure this project becomes an engaging, spine-tingling experience for players.
Ensuring all below is done while website has a password (1234) is fine. The password must be put before demo content is uploaded. 1. Buy a hosting package on my godaddy (I will pay) that allows multiple website hosting 2. Upload demo content to main website 3. make sub domain docs.m and upload second demo content theme 4. Install demo content entirely on both 5. Make the footer colour black on main theme 6. Remove shopping function and shpopping cart on main theme 7. Setting up email accounts with password I provide 9. Help organizing my godaddy products, I have unnecessary charges happening for example paying for emails I don't use.
I upgraded my server at hostgator from centos7 to almaviva. The upgrade was done by hostgator teadm, but some websites have stoped to work and they say is that there extra modules or extensions that needs to be installed. I need help for that, using whm cpanel. My old server is still available so its possible to compare previous configuration with current one.
WordPress Plugin for Meeting Scheduling with Zoom and Calendly APIsI need a custom WordPress plugin that integrates with the Zoom and Calendly APIs to automate meeting scheduling and email notifications. The plugin should allow me to input a participant's name, email, and meeting time, and it should schedule a meeting ...and schedule meetings. Email Notifications: once meeting is scheduled using API Zoom and Calendly will send emails from their platform itself . Code Requirements: Must be a standalone WordPress plugin. Clean, commented, and secure code. Easy-to-use interface for non-technical users. Deliverables: Fully functional WordPress plugin. Complete source code with comments. Documentation on how to install, configure, and use the plugin. Testing and bug fixes for sm...
Task: Install and Configure Chatbot on Objective: To install a chatbot on the website (), test its functionality, train it, and import all relevant data to ensure it operates effectively for a real estate broker. Utilize tools from Microsoft for Startups Founders Hub. Responsibilities: 1. Chatbot Installation: ● Select a suitable chatbot platform that integrates well with real estate brokerage needs. ● Install the chatbot on the website (). 2. Configuration and Customization: ● Customize the chatbot to align with the branding and specific requirements of Dawarle.com. ● Configure the chatbot to handle common queries related to real estate brokerage, such as property listings, client inquiries, and appointment scheduling. 3. Data Import: ● Import all relevant
...often each tool is used, and by whom, to help with efficiency and accountability. - User-friendly interface: Given that our primary users will be warehouse staff, the Tool Manager should be straightforward and easy to navigate. - Notification to the manager and to the dashboard on the display - Clean and simple process of checking in/out of tools by the user. - Easy options for camera choice among USB/embedded/IP camera or manual entry of data - User interface and administrator interface Ideal Skills & Experience: - Proficiency in UI/UX design, particularly for simple, intuitive interfaces. - Strong backend development skills, with experience in creating inventory and usage tracking systems. - Previous work with tool management systems, especially for heavy machinery, would ...
I need a Windows USB device driver converted to be compatible with Mac OS. The driver is for a custom hardware device. Key Requirements: - Proficient in Windows and Mac OS driver development. - Experience with USB device drivers, particularly for custom hardware. - Able to work with original Windows source files. Please note that I can provide the original Windows source files for the driver, which should facilitate the conversion process. Device is a transceiver capable of transmitting commands to remote wireless devices, and those wireless devices communicating back. Similar to a remote voting system. At completion, successful applicant to supply Xcode project so device driver can be compiled on my local Mac. Project should be quick and easy for the applicant with the ...
I'm in the process of acquiring the StackFood Multi-Restaurant Food Delivery App. I need a proficient developer to set up the mobile app on both PlayStore and AppStore, along with the Admin Panel configuration. Key Requirements: - Install and configure the StackFood package on the server - Setup and publish the mobile app on PlayStore and AppStore - Configure the Admin Panel Please note that I have not yet purchased the StackFood package, but I'm planning to do so very soon. There will be no need for customization of the mobile app prior to setup. However, I currently do not have developer accounts for either the Play Store or the App Store. Therefore, I will need guidance on how to proceed with this. Your expertise in dealing with this type of project will be greatly ap...
... Customer CSS: Create JavaScript files for functionality: Admin JS: Vendor JS: Customer JS: Set up backend server: Node.js/Express or Python/Django: or Create database schema: Database setup: Define schemas for flights, vendors, and customers. Dependent Files to be edited: HTML/ (for global styles) Follow-up steps: Install necessary packages for backend (Express, Mongoose, etc.) Set up database connection Implement authentication (JWT or OAuth) Test each interface for functionality and responsiveness The work should be done in 2 months and needs to be fully functional as it will be a major college project Frontend: HTML, CSS, JavaScript (with frameworks like React or Angular) Backend: Node.js, , or
I am looking for an experienced profess...experienced professional in the field of cybersecurity to install and configure tools used for network and website security testing in a controlled environment. The goal is to set up a system for training and experimentation with security and network analysis tools, such as Evilginx, to understand modern phishing techniques and how to defend against them. Tasks Required: Install and configure Evilginx on a virtual or local server. Set up a secure environment for testing. Provide instructions for proper use of the tool in an educational context. Preferred Qualifications: Experience in ethical hacking and penetration testing. Knowledge of security tools and network analysis. Ability to work with virtual environments (e.g., VMw...
..."CloudPanel" Check the new forum "Discourse" resources you can found the following Resources: ## I need to move all the users, posts, topics, tags, attachments, articles with somed exciptions will be explain in details later ## My website is in Arabic Language so please take care about the site encoding ## My website going to move from Old Domain to another New Domain ## Install Discourse on CloudPanel: ## Migrate an SMF2 forum to Discourse: ## Migrate a Vanilla forum to Discourse ## Migrate a PunBB forum to Discourse: ## Migrate
We would like to install SAP hana 2.0 as well as application server 10.0
I'm seeking an experienced engineer to design a repair for a wooden truss in our customers residential building. The truss was compromised during the installation of solar panels. The utmost priority for this project is ensuring the structural integrity of the truss post-repair. The install was done in Charlotte, NC
...systems. 2. Familiarity with the API or other exchange APIs. 3. Strong knowledge of programming languages such as Python, JavaScript, or Node.js. 4. Focus on security, especially around sensitive API credentials. Deliverables: 1. Fully functional trading bot with the agreed-upon features. 2. Source code with proper documentation for future updates. 3. Step-by-step guide on how to install and use the bot. 4. A brief period of post-delivery support to fix any bugs or issues. Timeline: Please provide an estimated timeline for completion, including milestones. Budget: Provide your pricing for basic and advanced features. My approximate budget is [insert your range here, $100 to $500 but I’m open to negotiation. How to Apply: 1. Share examples of similar crypto t...
Hello I need to install this to dotnet on Mac M series computer dotnet add package dotnet add package those commands are not working can we do this in 2 hours? can we have a max budget of $12 ? Please let me know any questions; this is all I know, if there is something ELSE to figure out let me know. Please ask me specific questions; if you say "tell me more about it" then all I can do is paste what is here? Thank you Again
Manage Esty and Instagram and run Ads
...engagement, and revenue while maintaining compliance with platform policies. Key Requirements: Experience Proofs: -Candidates must provide evidence of prior successful app promotion campaigns, including performance metrics, case studies, or client testimonials. Expertise in multiple promotion avenues: -Google Ads: Universal App Campaigns, YouTube Ads, Search Ads. -Facebook/Instagram Ads: App Install Campaigns, Lookalike Audiences. -Native Ads: Taboola, Outbrain, etc. -Affiliate Marketing: Partnerships with relevant affiliate networks. -Influencer Marketing: Collaboration with niche influencers. -Strategy Proposal: Submit a detailed marketing plan, specifying how the candidate/team intends to approach and target key demographics. Analytics and Reporting: -Ability to track and...
I'm looking for a professional to install solar street lights in a public space. The lights should be modern in style and equipped with the following features: - Motion sensors for energy efficiency and safety - Remote monitoring for maintenance and security - Adjustable brightness for different times of the day Ideal candidates should have experience with solar technology and street light installation.
