BIG LIST OF WEBSITES

List of Top Websites on Configuration

Top 250 Websites on CONFIGURATION

Download the Top 250 Websites to PDF

Last updated on Jul 1 2019.
Here are the best websites we found: linuxconfig.org • techpowerup.com • manytools.org • sweagle.com • configura.com • serverallcenter.com.br • site-exemple.com • smytravelgroup.com • ltqsmart.com

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Rank
Url
Preview
Tags
Score
Linux Tutorials - Learn Linux Configuration - LinuxConfig.org. Linux Configuration Tutorials
Alexa Rank
14,142
TechPowerUp. Leading tech publication, with fast news, thorough reviews, and a strong community.
Alexa Rank
5,357
Your online toolshed: many tools for web developers, system admins & webworkers (a.o. Network configuration, Image conversion, String manipulation, etc). Many tools for web developers, system admins & webworkers (a constantly growing online toolbox for: Network configuration, Image conversion, String manipulation, etc); suggest your own!
Alexa Rank
117,147
configuration data | continuous validation | DevSecOps | CI/CD. A SaaS platform for managing, consolidating & continuously validating all kinds of configuration data
Alexa Rank
308,052
Design spaces - Configuration made simple | Configura. We offer software solutions that will help you streamline your sales, design and order processes.
Alexa Rank
319,329
RouterOS router configuration page
Alexa Rank
373,278
Comment Manipuler le CMS WordPress, Themes, Plugins et configuration. Site-Exemple vous apprend a manipuler le CMS WordPress et personnaliser vos themes avec les diffirent téckniques, bon utilisation des plugins WordPress
Alexa Rank
377,327
Login - Configuration - Backoffice
Alexa Rank
395,851
WordPress › Setup Configuration File
Alexa Rank
397,926
Home. SCCM | System Center Comfiguration Manager, detailed documentations for sscm installations, configuration, daily use, etc.
Alexa Rank
94,384
Ansible is Simple IT Automation. Ansible is the simplest way to automate apps and IT infrastructure. Application Deployment + Configuration Management + Continuous Delivery.
Alexa Rank
14,876
Eng-Tips Engineering Forums. Eng-Tips engineering forums is an intelligent work forum community for engineering professionals of all disciplines.
Alexa Rank
13,733
Trouver les drivers et pilotes en téléchargement, mise à jour PC. Service web pour trouver facilement ses pilotes, détecter sa configuration matérielle et logicielle et diagnostiquer des problèmes comme les écrans bleus. - DriversCloud.com
Alexa Rank
25,633
Dyno. Dyno is a feature-rich and modular discord bot for your Discord server. With web configuration, moderation, anti-spam, auto roles, music, custom commands, and much more!
Alexa Rank
26,577
المنتدى العربي لنظم المعلومات الجغرافية. المنتدي العربي لنظم المعلومات الجغرافية GIS Arab الجغرافيا العامه, الجغرافيا الطبيعيه, الجغرافيون العرب ،الجغرافيا العامه, الجغرافيا الطبيعيه, الجغرافيون العرب ، السوفت وير الجغرافى، بحوث ودراسات عربية ، بحوث جغرافية ، الفيديو الرقمى ، الصور الرقمية ، الخرائط ، ادوات الجغرافى، الجغرافيا العامه, الجغرافيا الطبيعيه, الجغرافيون العرب ، السوفت وير الجغرافى ، بحوث ودراسات عربية ، بحوث جغرافية ، الفيديو الرقمى ، الصور الرقمية ، الخرائط ، ادوات الجغرافى، المكتبة الجغرافية، الجغرافية، جغرافية، جغرافي، الاستشعار من بعد، الاستشعار عن بعد، المساحة، الجغرافيا، الخرائط، السوفت وير الجغرافى، الجغرافيا العامه، الجغرافيا الطبيعيه، الجغرافيون العرب، الجغرافيون العرب، الجغرافيا العامه، الجغرافيا الطبيعيه، الأحياء، الجغرافيا الحيوية، جغرافيا التربة، الجيومورفوليجيا، جغرافيا التضاريس، جغرافيا البحار و المحيطات، الجغرافيا الإقليمية ،جغرافيا طبيعية ، جغرافيا دارجة، الجغرافيا المناخية ، الجغرافيا الطبيعية ، السكانية ، جغرافية العمران ، الجغرافيا الحضارية، الجغرافيا الاجتماعية، الحضرية، جغرافيا المدن، الجغرافيا السياسية الجغرافيا التاريخية ، جغرافيا النقل والمواصلات، الجغرافيا الاقتصادية، جغرافية الأسماء، الجغرافيا البشرية ، جغرافية الخرائط، الفلكية، السطح، الجيمورفولوجيا ، المناخية، المياه، التربة، البحار والمحيطات، الحيوية ، التاريخية ، المجوعة الشمسية ، كوكب الأرض، الحقائق الجغرافية للكرة للأرضية، الكون والأجرام السماوية، الجغرافيا الاقتصادية، الجغرافيا الطبية، الجغرافيا العسكرية، جغرافيا السلالات ، الجغرافيا الزراعية، جغرافيا النقل والتجارة، الجغرافيا السياحية، جغرافيا الاستيطان، الجغرافيا الصناعية، جغرافيا المدن، الجغرافيا الاجتماعية، جغرافيا السكان ، جغرافيا النقل، جغرافيا حسب المكان، علم المكان‏ ، جغرافيا عسكرية، جغرافيا طبيعية، طبوغرافيا‏ ، جغرافيا فيزيائية‏ ، جغرافيا عمران‏ ، جغرافيا بشرية‏، جغرافيا اقتصادية‏ ، جغرافيا بشرية ، علم الخرائط، علم الهيئة، جغرافيا سياحية، جغرافيا حيوية، جغرافيا طبيعية ، حتمية جغرافية، جغرافيا نقدية، جغرافيا اقتصادية، جغرافيا سياسية، جغرافيا ثقافية، جغرافيا متكاملة، فقه جغرافي، خريطة العالم، خريطة، جغرافي، قائمة البلدان، كوروغرافية، فلسفة الجغرافيا، علم الخرائط، جغرافية العمران، جغرافية الصحة، جغرافيا طبية، جغرافيا سياسية، جغرافيا بشرية، جغرافيا إقليمية، فروع الجغرافيا، بحوث جغرافية، اطروحات جغرافية، اطروحة جغرافية، دراسات جغرافية ، كتب عربية, تصميم و تنفيذ انظمة معلومات جغرافية, خرائط اف ام و ايه ام, تحويل البيانات, الدعم الفنى, نمذجة البيانات, الإرفاقات الوصفية, بناء العلاقات المكانية, إدخال البيانات, تصميم و تنفيذ قواعد البيانات , حفظ البيانات و ارشفتها, تحسين جودة البيانات, كتب برمجة ,خدمات التخطيط, تحليل الشبكات, التحليل ثلاثى الابعاد, التحليل المكانى, تكامل و توحيد البيانات, التعامل مع ملفات الاكسيس, تحديث خرائط, نظام الترميز, خرائط مخصصة, انتاج خرائط, نظم المعلومات الجغرافية ,آلية البيانات,تأكيد و رقابة جودة البيانات,ورش عمل للموضوعات الخاصة,تصميم و تنفيذ المشروعات التجريبية,الاتصال بقواعد البيانات الخارجية,الاستعلام بلغة اس كيو ال,تحويل الاسقاط,شف الخرائط,رسم الخرائط,التصحيح الجغرافى,تحرير البيانات,انشاء الحريم و الممرات ,تطابق الخرائط,الخرائط الموضوعية,تقييم دقة البيانات,ادارة قواعد البيانات و الملفات,ادارة المشاريع و الدعم الفنى,الاستشعار عن بعد,الحصول على المرئيات الفضائية و الصور الجوية,التصحيح الهندسى,التصحيح الراديومترى,التصحيح الاورسومتريك,التصنيف,تفسير و تحليل المرئيات الفضائية و الصور الجوية,تجميع المرئيات الفضائية المجزئة,انشاء نموذج الاراضى الرقمى, ردار,التكامل مع انظمة المعلومات الجغرافية,التصوير بالفيديو,معالجة المرئيات الفضائية,تحسين و تحليل المرئيات الفضائية الرقمية,تحليل بيانات الردار,التعامل مع صور الاشعة تحت الحمراء و تحليلها,التحليل الفوتوجرامترى,رسم الخرائط من المرئيات الفضائية,الصور الجوية,تطبيقات نظم المعلومات الجغرافية,انظمة مخصصة و تطبيقات منفردة لسطح المكتب,برمجة بلغة,نشر تطبيقات نظم المعلومات الجغرافية على شبكة الانترنت,تصميم و تطوير التطبيقات,تطوير البرامج من خلال ,تعليم و تدريب,دروس تعليمية فى استخدام برامج نظم المعلومات الجغرافية بمختلف المستويات (مقدمة - متوسط - متقدم).,دروس تعليمية فى معالجة المرئيات الفضائية بمختلف المستويات (مقدمة - متوسط - متقدم).,دروس تعليمية فى تطبيقات نظم المعلومات الجغرافية,دروس تعليمية فى تطبيقات الاستشعار عن بعد,دروس تعليمية مخصصة فى تطبيقات نظم المعلومات الجغرافية محددة,تدريب مخصص,تسويق و مبيعات,الإعداد للمؤتمرات,أسعار الخدمات,التعاقدات,الاجهزة و الشبكات,تجهيز اجهزة الحاسب الالى مع تصميم و تنفيذ انظمة الشبكات,صيانة الاجهزة و الشبكات,الدعم الفنى لكل من الاجهزة و ا الشبكات,أمن الاجهزة و الشبكات,إعداد الاجهزة و البرامج,الحصول على الاجهزة و البرامج,مسح ضوئى,المسح الضوئى للخرائط المطبوعة,تحويل البيانات المساحية الى بيانات خطية متجهه ,المسح الضوئى لافلام التصوير الجوى,المسح الضوئى عالى الدقة للعديد من امتدادات الصور,طباعة,طباعة ابيض و اسود لكل من الخرائط الرقمية و المرئيات الفضائية,طباعة ملونة لكل من الخرائط الرقمية و المرئيات الفضائية,جمع بيانات و تحليلها,التعامل مع وحدة الرصد المتكاملة,التعامل مع انظمة تحديد المواقع العالمية,توصيف الجداول,اخذ صور العناصر الحقلية,تسجيل أصوات العناصر الحقلية,التحقق الحقلى,تسجيل الاحداث بالصوت و الصورة فى الحقل,ادارة معلومات المسح الحقلى,المسح الرقمى الحقلى, GIS, Geo, Map, Maps, Geomatic, Geomatics, Geographic Informatin System, Geographical ، gis ، rs ، mapinfo ، arcgis ,Geographic Information System,Map Production, Custom Mapping, Geocoding, Map Updates, Increasing Data Access, Data Integration, Spatial Analysis, 3D Analysis, Network Analysis, Facilitate Planning, Improve Data Quality, Data Archiving ,Data Entry, Topology Construction, Attribute Attachment,Data Modeling, Technical Support & Back Stopping, Data Conversion, AM/FM Mapping, GIS Design & Implementation, Implementation Plans, Data Automation, Quality Assurance & Quality Control [QA/QC],Special Topics Workshops, Pilot Project Design and Implementation, Data Creation, SQL Query, External Database Connectivity, Projection Transformation, Map Digitization, Cartography, Georeferencing, Data Editing, Buffering, Overlay, Thematic Map, Assessment of Accuracy, Database Design and Implementation, Database Management and File Management, Project Management and Technical Support, Remote Sensing, Airphoto and Image Acquisition,Geometric Correction, Radiometric Correction ,Orthometric Correction, Classification, Airphoto , Image Interpretation and analysis, Mosaicing,Digital Terrain Modeling [DTM], bible books, Videography,Radar, GIS Integration,Image Processing,Digital satellite image data analysis and enhancement, Radar data analysis, Infrared photography and analysis, Analytical photogrammetry, Cartography Satellite Imagery, Aerial Photogrammetry, Geographic Information System Applications, System Customization & Stand alone Application,AML , Avenue , SDE, C, C++, Java, and Visual Basic Programming, GIS Publishing Web, Applications Design and Development, Turnkey GIS Databases (Web GIS) – LINK, Software Development Using Java, ASP.net, VB.net, and Arc Scripting, Learn & Training, Introduction / Intermediate / Advance Courses in using GIS Software, Introduction / Intermediate / Advance Courses in using Image Processing Software, GIS Applications Courses, RS Applications Courses, Customization of GIS for Specific Applications, Customized Training Courses, Sales & Marketing, Conferences Preparing,Services Prices, Contracting,Hardware & Networks, Hardware & Network Configuration Design and Implementation, Hardware & Networks Maintenance, Hardware & Networks Technical Support, Hardware & Networks Security, Installation of Hardware and Software, Software/Hardware Procurement, Scanning, Hardcopy Scanning, Raster to Vector, Arial photos Films Scanning, High-Resolution Scans of Multi-Format Images, gis ، rs ، mapinfo ، arc , Printing & Plotting, Black & White Printing for Digital Maps & satellite Images, Color Printing for Digital Maps & satellite Images, Data Collection & Analysis, Total Station, GPS, Table Attributing, Photos Capture, Sounds Record, Field Verification, Events Video Record, Survey Information Management, Digital Field Mapping Pen Map
Alexa Rank
161,711
Csharp Star: Tutorials, Tips and Tricks on Microsoft Technologies !!. C# Tutorials,ASP.net Tutorials,ASP.net Core,Entity Frameowrk Core,Interview questions,csharp tutorials, c-sharp tutorials,C# Interview Questions, csharp Interview questions,c-sharp Interview questions,Garbage collection, Multithreading,ASP.net MVC,ASP.net Web API,HTML5,Design patterns,C# Puzzle,C# Quiz,WCF Tutorials,WCF Concepts,.NET,.NET Collections,Service Contracts,Operation Contracts,Data Contract,Message contract,fault contract,WCF Tutorials,WCF, WCF 3.5, WCF 4.0, WCF 4.5, WCF basics, WCF Bindings, WCF Concurrency, WCF Configuration, WCF Data Services, WCF Hosting, WCF Instance Management, WCF Interview questions, WCF RESTful Services, WCF Security, WCF Serialization, WCF service, WCF Service Instancing, WCF Tracing, WCF Transaction, WCF Transactions,web services, Windows communication foundation,WCF Session Enumeration, WCF Security,WCF WAS Hosting,WCF IIS Hosting,WCF Self Hosting,WCF Windows service hosting,WCF Contracts,WCF Proxy,Channel Factory,WCF Tracing,WCF logging,WCF Message Protection,WCF knowntypes,WCF Architecture,WCF Service Impersonation, WCF Message exchange Patterns,WCF exceptions,WCF Unhandled exceptions,WCF Throttling,WCF Concurrency,SOAP,REST
Alexa Rank
181,530
intoDNS: checks DNS and mail servers health. intoDNS checks the health and configuration of DNS and mail servers.
Alexa Rank
36,756
Terraform by HashiCorp. Terraform enables you to safely and predictably create, change, and improve infrastructure. It is an open source tool that codifies APIs into declarative configuration files that can be shared amongst team members, treated as code, edited, reviewed, and versioned.
Alexa Rank
37,495
The Programming Language Lua. Official web site of the Lua language
Alexa Rank
20,226
Shadow - High-Performance Gaming For All. Shadow is the first streaming service that gives you access to a full gaming PC from $24.95/month. Enjoy your games in the best conditions. Game on with a high-end configuration with a multi-core processor, high-end NVIDIA graphics and 12GB of RAM. Your computer gets free hardware upgrades!
Alexa Rank
42,863
Dynamic Periodic Table. Interactive periodic table with dynamic layouts showing names, electrons, oxidation, trend visualization, orbitals, isotopes, and compound search. Full descriptions from write-up sources.
Alexa Rank
22,872
SharePoint Consulting | SharePoint Help: Businesses & Nonprofits. Greg Zelfond, SharePoint Consultant specializing in Document Management & Migration, out-of-the-box configuration for SharePoint & Office 365
Alexa Rank
49,336
Test Live Streaming | Streamtest.in. Free and easy to use web based stream tester utility, show bitrate, audio and video codec, fps and other common configuration
Alexa Rank
53,251
La Ferme du Hardware, actualité informatique et high-tech. La ferme du Hardware - CowcotLand - Lire l''actualité informatique, articles, tests, comparatifs. Hardware, smartphones, nouvelles technologies
Alexa Rank
24,303
The best codecs for Windows 10.. When dealing with codecs, more does not equal better. Having the least amount on your system is the best configuration. This is exactly what the Shark''s Codec Packages do for you. Windows MediaPlayer and MediaCenter will be able to play all your files.
Alexa Rank
62,850
The Hitchhiker’s Guide to Python! — The Hitchhiker's Guide to Python. An opinionated guide to the Python programming language and a best practice handbook to the installation, configuration, and usage of Python on a daily basis.
Alexa Rank
64,027
40+ Bootstrap, Angular, React Admin Templates & UI Kits. Best Admin Templates that works quickly on any configuration with top features having 40+ designs to choose from ready to use dashboards and UI Kits.
Alexa Rank
65,525
Oh My Zsh - a delightful & open source framework for Z-Shell. Oh-My-Zsh is a delightful, open source, community-driven framework for managing your ZSH configuration.
Alexa Rank
68,660
Enjoyable. Nuxt.js presets all the configuration needed to make your development of a Vue.js application enjoyable. Nuxt.js can produce Universal, Single Page and Static Generated Applications.
Alexa Rank
68,999
Download Beta Profiles. Download configuration profile for iOS, macOS, watchOS and tvOS beta.
Alexa Rank
69,482
ProxySite.Video | Free Web Proxy Site to Unblock YouTube Videos. ProxySite.Video is the most advanced free web proxy service. It supports any kind of sites: video hostings, search engines, social networks, e-mail services and much more. You can unblock your favorite resources such as Youtube, Google. A lot of video sites can be surfed anonymously with full video streaming support. ProxySite.Video is a perfect alternative to VPN. It is free of charge, no additional actions or configuration required.
Alexa Rank
73,833
RetroArch. RetroArch is a frontend for emulators, game engines and media players. It enables you to run classic games on a wide range of computers and consoles through its slick graphical interface. Settings are also unified so configuration is done once and for all.
Alexa Rank
75,276
Bootlin – Embedded Linux and kernel engineering
Alexa Rank
40,484
Consul Enterprise. Consul is a highly available and distributed service discovery and KV store designed with support for the modern data center to make distributed systems and configuration easy.
Alexa Rank
103,876
AeroAdmin - FREE remote desktop software, easy remote desktop connection. AeroAdmin - zero configuration FREE for business and home remote desktop software
Alexa Rank
134,564
QuadLayers - WordPress Themes & Plugins. The best WordPress configuration and optimization tips, how-to tutorials, plugin reviews, theme roundups and awesome offers.
Alexa Rank
137,555
MINISTRY OF FINANCE. The mission of Ministry of Finance is the configuration of economic policy, the training and follow-up of concretisation of Government owned Budget, tax political, the effective management of economic resources of State, the discovery of resources for cover of lending needs of State, the promotion of computerisation of public service and the growth and exploitation of human potential of Public Service.
Alexa Rank
139,266
Infrastructure & Application Monitoring | checkmk. Checkmk is a leading tool for Infrastructure & Application Monitoring. Simple configuration, scaleable, flexible. Open Source and Enterprise.
Alexa Rank
159,230
HTPC Guides • Streamline your home media experience. Install and Configuration Guides for HTPC, Raspberry Pi, Home Media Server, Plex, Kodi, VPN, Linux server, Usenet, Torrents, and Media Center Setup
Alexa Rank
159,599
wintips.org – Windows Tips & How-tos. Free tutorials and guides to solve computer hardware and software related problems. Detailed instructions to remove viruses, Trojans and malware from your computer.
Alexa Rank
57,577
EPLAN - efficient engineering.. EPLAN offers process consultancy and application software to reduce configuration time and engineering costs.
Alexa Rank
181,785
Edge Compute Platform - Global Edge Delivery | Section. Section's Edge Compute Platform gives developers code-level control over edge configuration and deployment for application performance, security, and scalability.
Alexa Rank
194,154
La Domo Pratique : Rend la domotique Pratique et facile.. Tutoriels de domotique Jeedom, Scenario, Design, Widget, Virtuel, Interactions, configuration, installation. Tests de materiel, bons plans. Tout pour rendre la domotique pratique.
Alexa Rank
209,161
What is .htaccess? - Apache .htaccess Guide, Tutorials & Examples. .htaccess is a configuration file for use on web servers running the Apache Web Server software. When a .htaccess file is placed in a directory which is in turn ''loaded via the Apache Web Server'', then the .htaccess file is detected and executed by the Apache Web Server software. These .htaccess files can be used to alter the configuration of the Apache Web Server software to enable/disable additional functionality and features that the Apache Web Server software has to off...
Alexa Rank
236,463
Agile Project Management Software for Agile Development and Issue Tracking | Yodiz. Web-based agile project management software for scaling agile and Devops . Yodiz supports product backlog management, Kanban / ScrumBan /Scrum management, bug Tracking, Team Discussions and software configuration management integrations. Get your 30-day Free Trial started today ! Free for upto 3 Users .
Alexa Rank
249,793
ESPHome — ESPHome. ESPHome Homepage - Reimagining DIY Home Automation. ESPHome is a framework that tries to provide the best possible use experience for using ESP8266 and ESP32 microcontrollers for Home Automation. Just write a simple YAML configuration file and get your own customized firmware.
Alexa Rank
255,595
DNS LookUp : Analyse nslookup de nom de domaine. DnsLookUp.fr analyse la configuration d''un nom de domaine, une adresse IP, une adresse email ou un nom d''hôte grâce à des vérifications nslookup, résolutions et reverse DNS.
Alexa Rank
272,728
Cisco Networking Tutorials | Networks Training. We Provide Configuration Examples, Training and Networking Tutorials about TCP/IP Networks with focus on Cisco technologies.
Alexa Rank
274,905
Krizna: Linux Tutorials - Linux server configurations. krizna.com provides technical information about server configuration and software installation on centos, ubuntu and other linux flavors.
Alexa Rank
293,746
Redmine Cloud Hosting, Redmine Plugins, Services and Development. We know how to project and deliver Redmine plugins, themes, IT solutions and services for Redmine - custom development, Redmine installation and configuration. Over 50 000 happy clients
Alexa Rank
295,898
CryptoWatch - Multiple TradingView Charts in 1 Screen. View multiple TradingView charts all in one screen. Supports 1x1 all the way up to 9x9 one page charts. Once your charts are configured bookmark the page to save your configuration.
Alexa Rank
300,607
SaltStack intelligent, event-driven IT automation software - SaltStack. SaltStack intelligent automation delivers, event-driven security, cloud and configuration management for the complexity and scale of a software-defined world.
Alexa Rank
332,900
Lab Minutes. Over 400 of free Cisco lab videos with complete step-by-step configuration guides. Watch your favorite topics and learn Cisco technologies.
Alexa Rank
339,567
MaghrebStar. communauté d’entraide sur la télévision par satellite et iptv. conseils sur les installations, achats et configuration de différents types de matériel satelliteet iptv.
Alexa Rank
344,537
D-Link Homepage | D-Link Wireless Router,Support,Drivers - Dlink.cc. D-Link Wireless,Switch,Router.D-Link configuration and settings.D-link firmware and drivers.Helps you to solve the D-Link network problem.
Alexa Rank
363,988
iPod, iPhone & iPad Specs, Answers, Help, Troubleshooting & More: Everyi.com. A complete guide of every iPod, iPhone and iPad with specs, configuration info and prices, detailed answers to iPod, iPhone and iPad questions, and more.
Alexa Rank
374,497
DMARC - OnDMARC - Actively block phishing. Protect your email, protect your customers. OnDMARC makes DMARC configuration easy and fast so you can secure your domain and protect your users.
Alexa Rank
388,291
Dialed In Config. Exploring how to "Dial In" your Configuration
Alexa Rank
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Arik Yavilevich's blog | "Code IT", my thoughts on technology. With the release of Android 8.0 ("Oreo"), I as well as others have noticed that they cannot find some HM-10 clone BLE modules when scanning for them with an Android 8.0 (or newer) phone. Why is that happening and what can you do about it? tl;dr, the issue is due to a bug in the firmware of those modules, typically referred to as CC41 firmware. Fixing these modules is too much of a hassle and you would probably be better off getting a new module for communicating with Android 8.0 and perhaps use the problematic ones for iOS and pre Android 8.0 devices only. I have several projects which involve BLE, most noticeably Fochica, a system that alerts parents if they have unintentionally left their children in a vehicle. As a result I have been dealing with all sort of BLE modules in the last couple of years. Many of these modules are in a category called "HM-10 clones". I have written an Arduino sketch, arduino-ble-ident-n-set, to help identify the specific module type and to help configure it easily. Typically listed or sold as just "HM-10" these modules are a group of modules that share a form factor, pin layout and a micro-controller (the TI CC2541). While trying to mimic the original HM-10 by "Jinan Huamao technology Co" they differ by firmware, breakout board and daughter board. When ordering online it is very difficult to know which exact combination you will get. Only the original HM-10 modules have some kind of support, while other variations are mostly made by anonymous clone manufactures. I personally have dozens of modules with 6 different unique combinations, including 2 variants of CC41, 2 variants of MLT-BT05, an original HM-10 and a botched CC41 that I will describe in more detail later in the article. The bug When these modules fail, it could be due to an issue in the daughter board, the breakout board or in the firmware. This case is due to a bug in the CC41 firmware. When a BLE device receives a scan request it responds with a scan response. The response includes information about the device such as device name, services offered, etc. The length of the response depends on the amount of bytes in the response fields. The CC41 firmware always sends a response with length of 31 bytes. It basically performs a "read beyond bound" from the variable that stores the scan response. The first part of the 31 bytes is a valid scan response and the second part is some padding containing either uninitialized memory or data of the next variable in memory. iOS and pre Android 8.0 systems ignored this corrupt data but starting with Android 8.0 Google decided to perform stricter validation of this data. This was probably done to prevent potential security issues, crashes and to follow the standard more closely. The malformed response is ignored and the resulting behavior is as if the CC41 is not responding at all. I was able to reproduce and observe this behavior with the following BLE sniffing setup: TI SmartRF Protocol Packet Sniffer software - CC2540 USB device - - I got mine from eBay, probably a clone. SmartRF Flash Programmer software - TI SmartRF04EB programmer device - - I got mine from eBay, probably a clone. For a more DIY approach, there are articles showing how you can use an Arduino as a TI programmer. The steps are: Install the right software versions for your matching devices. Install a driver for the programmer. Program the "CC2540 USB" device with "Texas Instruments\\SmartRF Tools\\Packet Sniffer\\bin\\general\\firmware\\sniffer_fw_cc2540_usb.hex" firmware. Connect the CC2540 USB to your computer and run the packet sniffer software. I found the following guide from TI useful. We can now observe BLE traffic. Setting a filter on scan responses will make it easier to see the bug. Here are some responses from different BLE devices: CC41: 0D 09 46 6F 63 68 69 63 61 5F 33 31 41 44 00 00 81 00 10 00 FF FF FF FF FF FF FF FF FF FF ESP32: 02 01 06 0F 09 45 53 50 5F 47 41 54 54 53 5F 44 45 4D 4F 02 0A EB 05 03 EE 00 FF 00 HM-10: 07 09 48 4D 53 6F 66 74 MLT-BT05-V4.0: 09 09 4D 4C 54 2D 42 54 30 35 Local name, Field type, Length, Junk. I have color-coded the various parts to easily convey the issue in the response. For exact protocol details see the specifications. Few observations: A spontaneous idea might be to change the name of the CC41 device to something longer such that we have a valid response or at least a zero-padded one. However, the CC41 firmware doesn't allow to set a name longer than 18 characters. Most modules send only their name in response to a scan, while the ESP32 device in this example was programmed to send 3 other fields as well. Solutions It is unlikely that Android's new behavior will change so the typical resolution would be to update the firmware of the device to a bug free version. Unfortunately Bolutek, who seem to be the company behind the CC41, doesn't provide updated CC41 firmware or any easy way to upload the firmware to the device. We are left with the following options: Use another module Painful process to flash a different working available firmware Trying to hack the device Use another module This is probably the easiest option in terms of invested time. HM-10 clone modules are sold at $2 a piece so if you need to replace just a few it might be easier to order another HM-10 (clone) module. New modules will most likely come with a different firmware such as a MLT-BT05 variant, or even better an original HM-10 which has means for over-the-serial flash updates. If you still get a CC41 module nowadays I feel it is a valid reason to ask for a refund. Personally I am a bit tired of dealing with issues of the HM-10 ecosystem. You never know what you will get as the variability is so high. Most modules have an anonymous entity behind them and no way to get updates. The original model lost its value as a unique identifier of a specific model and became a generic identifier. Pairing/bonding is poorly implemented in the clones compared to alternatives. Due to these reasons and more you too might want to stay away from HM-10 all together. Nowadays I prefer using an ESP32 instead of an Arduino + HM-10 combination. The main reasons are: It is a bit more complex but you have full control of the firmware, you can define your own services/characteristics and use this for more than just wireless UART. There is a company behind the device and you don't need to do any wiring as the BLE (+BT+WiFi) is built into to the micro-controller. The ESP32 is a much more powerful chip than a typical Uno/Nano but still can be programmed the same way from an Arduino IDE. The ESP32 now has a decent BLE library. The big difference between the two approaches is that with the ESP32 you don't have a separate firmware for the external module, instead the code of the BLE is compiled together with the code of your program. When you upload your code you upload both your program and any BLE related code/libraries. Re-flashing to another firmware Those looking to "fix" their CC41 flashed modules can flash them with a different firmware. The only other firmware I am aware of that is available in a file that can be flashed is the HM-10 original firmware. Any modules with other firmware that I have tested always came "chip locked" so you can't read the firmware from the module. I guess the HM-10 firmware once leaked or was distributed without a "chip lock", which resulted in its availability. If you are aware of another firmware that exists for this purpose, please mention that in the comments. There are advantages and disadvantages to flashing the HM-10 original firmware to a clone device. Advantages: Pairing/bonding works better and with more phones models and OS versions Ability to do over-the-serial updates Works with Android 8.0 Works better as a beacon (iBeacon) Less bugs in general Disadvantages You will need to cut the shrink warp of your module You will need to do some soldering You will probably need to buy/build some tools (clips, programmer, etc) You might have to fix issues and apply workarounds to make the STATE pin work as expected PSA: The jnhuamao.cn site contained downloads with trojans and was classified as a malicious site on several instances so if you are downloading executables from there you have a chance of getting infected. You can do the process without going there which is what I would recommend, otherwise be careful. The instructions below are not going to be a complete tutorial for re-flashing the CC41, for detailed instructions, firmware files and discussion see the following resources: JDY-08 : bluetooth 4.0 module How to flash genuine HM-10 firmware on CC2541 (make genuine HM-10 from CC41) - Video I used the following tools to re-flash the module: SmartRF Flash Programmer software - TI SmartRF04EB programmer device - - I got mine from eBay, probably a clone. See CCLoader for a DIY approach. DIP16 programming clip/clamp - an option to consider instead of soldering wires to the module The steps I took for flashing Cutting the transparent shrink wrap that protects the module. You should consider taping it back when you are done flashing. Identifying the pins needed for programming: debug clock, debug data, reset, power 3.3V and ground. Adding solder to the pins/pads where connection are to be made. Bending the connectors of the DIP16 clip so they align to the pads of the castellated daughter board. They are not the same pitch by default. Running the SmartRF programmer software and setting the settings for writing the desired firmware. Connecting Gnd to the 2.54mm module pin and the other programmer connections via the clip. Connecting the programmer to the USB. Performing the program. Verifying the result through a BLE app and a serial connection. This worked surprisingly well. The difficult part was holding the clip in place steady for a good connection to the pads. If the connection is not good, then the device would not be detected in the programmer when it is plugged in. Fixing the STATE pin All works well with the new firmware except for the STATE pin. In the clones this pin is supposed to be HIGH when the module is connected and LOW when the module is disconnected. To accomplish that the clones use pin P1_1 (PIO2) which is connected directly to STATE while also having a separate pin P1_2 (PIO1) to drive the on board LED. The default behavior for the LED is to blink when the module is not connected and HIGH when the module is connected. In the original module, P1_1 is not used and is configured as OUTPUT LOW. Instead P1_2 is used for both the STATE and the LED. This means that by default the STATE will blink when the module is not connected, which is a weird behavior for a digital output signal. To compensate for that, the original HM-10 allows to reconfigure the behavior of P1_2 (PIO1) through AT commands to have it as LOW when the device is not connected. This is one aspect where I believe the clones are actually better than the original. It makes much more sense to have separate digital signal and visual LED indicator pins as each has its own expected logic. If, like me, you rely on the proper operation of the STATE pin for your application logic, then you will have to make another alteration to the module to reconnect the STATE pin to P1_2 instead of P1_1. Note that it is not enough to bridge the two, you have to actually cut the previous connection, otherwise there will be a short circuit between P1_2 and P1_1. Identify the trace that connects between STATE and pin P1_1 and cut it using a hobby knife. Verify that there is no conductivity. Then solder a bridge between STATE and the P1_2 pin or the LED or the LED resistor (depending on what is convenient on your breakout board). Verify that the two pins are not connected and that STATE is now properly connected to pin P1_2. Using AT commands or arduino-ble-ident-n-set configure the module to drive the LED in a boolean fashion. You should now have a proper STATE pin. Note, some HM-10 clone modules come with no solder bridge between pin P1_1 and the matching pad on the breakout board. If you intend to re-flash those, this can actually be an advantage. Don't fix this connection, re-flash the module and then bridge the two pads on the breakout board without bridging the matching pads on the daughter board. This should connect STATE to P1_2 while leaving P1_1 disconnected. Here you can see a CC41 module which was previously fixed to support STATE, now re-worked to support STATE in a HM-10 configuration: Creative solutions Perhaps there are additional ways to hack the CC41 module. I am really interested to know if you have any ideas. We know that there is at least one bug in the firmware and perhaps there are others, which can allow us to take control of the device, alter its behavior or dump its firmware. Perhaps somebody has an updated firmware or an original extracted firmware that can be patched... Conclusion It is possible to fix misbehaving modules by re-flashing them, but it is not a quick or easy process. Might be better to get new HM-10 modules or switch to alternatives. It would be nice to have more options. The importance of software updates is demonstrated once again. For the benefit of the community and other buyers, you are encouraged to leave reviews for any modules you get from eBay/aliexpress and describe their parameters such as type, version, STATE pin implementation, etc. This is the only way we can beat the huge fragmentation in the market and educate the sellers about the items they sell.
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