Linux Embedded Challenge Knowledge Base

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Linux Embedded Challenge Knowledge Base

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-we implemented the page where you can get access based on the QR code information, you get a message if the access is granted or denied, if someone enters the field, the admin will receive a notification in logs platform. -if the request time doesn't match the current time, administrator will receive a notification in the admin logs platform that will inform why the access was denied. -exact hour and data are displayed on the page.
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The video summarizes the functionality of web server running on the UDOONeo board and a web interface. Connecting through ssh, we can see the feedback that the server is giving. From the web interface, the user has access to the following functionalities: - put the device in learning mode (giving two names - for the device and for the command which are being learn) - select an already learnt command, having the possibility to schedule it for a further use or directly trigger it. The video also shows the feedback given by the server while running and communicating with the web interface.
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In acest filmulet prezentam indeplinirea sarcinilor corespunzatoare primei etape: conectarea senzorilor la placa UDOO.citirea senzorilor(temperatura, umiditate, altitudine, presiune atmosferica si intensitate luminoasa) si afisarea datelor in terminalul Linux. De asemenea, se poate observa ca folosim si un LED care semnalizeaza nivelul de lumina(se aprinde atunci cand nivelul intensitatii scade sub o anumita valoare). Prima parte a filmuletului prezinta realizarea conexiunilor cu placa . Toti senzorii sunt alimentati de la 3.3V conform specificatiilor pentru functionare optima din foile lor de catalog. Totodata, aceasta tensiune este sub pragul de 3.3V ceea ce protejeaza porturile de intrare ale placutei. Conexiunea fizica UDOO - calculator a fost realizata prin USB iar pentru a avea acces la terminal s-a folosit VNC + Putty In partea doua a doua a filmuletului se observa afisarea in consola a datelor citite de la senzori, iar ultima parte reprezinta un bonus prin care dorim sa semnalizam scaderea intensitatii luminoase sub un anumit prag prin aprinderea unei lumini, in cazul de fata un LED.
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Our project is Adaptive Cruise Control and for our first milestone we built a proof-of-concept automobile which can be controlled from a computer with the help of an application. In this app the speed can be adjusted and the car can be controlled using the WASD keys. Also, it has the option of cruise control which moves the car forward at a constant speed.
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Milestone_1 Implementarea hardware si software; Aplicatia grafica a sistemului: ofera o vedere top-down a intersectiilor si a celor 2 vehicule; Posibilitatea de a alege punctul de start si punctul de oprire a vehiculelor; Vehiculele incetinesc cand se apropie unul de celalalt pentru a evita coliziunea.
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Site-ul meu catalin.etrandafir.ro redirectioneaza catre adresa router-ului meu pe un port care redirectioneaza spre placuta UDOO pe portul serverului Tomcat. Daca serverul e pornit oricine care va intra pe catalin.etrandafir.ro va putea folosi aplicatia.
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In this video, you are able to see the running mode of a python sketch that we used to introduce data from our sensors in a database every 10 seconds, the database itself and the web page which shows both the information stored in the database in a fancy format (the last entry, refresh every 15 seconds) and also 3 charts that describe the evolution of temperature, humidity and pressure over time.
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Buna ziua, Pentru primul milestone am conectat o pereche laser-fotorezistor la plăcuța UDOO și am citit valorile analogice (simuland inaltimea produsului final). Multumesc!
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   În urma masuratorilor am constatat ca pompele trag 50ml de apa intr-un timp de 8.5sec, prin urmare in 34sec in pahar au ajuns 200ml de apa.    Timpii activarii fiecarei pompe pentru intervalul dorit au fost preluati din memoria nevolatila (fisier creat pentru milestone 1) si transmisi procesorului de Arduino.    Acesta din urma a comandat motoarele prin intermediul releelor.
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   Realizarea primului milestone presupune realizarea interfetei web, care sa contina atat butoane pentru controlul robotului, cat si o fereastra de feedback de la acesta. Interfata este structurata astfel incat sa contina blocuri pentru: - status-ul de conectare; - live streaming; - feedback de la robot; - controlul robotului de la distanta.    Pentru realizarea interfetei si a comuncarii dintre interfata si Arduino, au fost necesare urmatoarele fisiere: - server.py (programul aflat in acest fisier este responsabil pentru crearea webserver-ului); - serialworker.py; - main.js; - index.html; - css.css; - serial2ws.ino.  
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- we built our robot and as you can see we printed a bridge beetwen the motors with our 3D printer - we have already bought a very good battery but it has not arrived yet, we are sorry for this - our robot is functional and we chose firstly to give commands throw udoo command line with .ino files, but in the next Milestone we will change this because we realised that it would be much better to command throw web server
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Assembly of our project using 2 servo motors, the Udoo board, and a separate voltage regulator for the power for the servo's.  We probably did something wrong. one of the servos is dead ( it seems the inside gears are damaged, we can hear it spinning, but it doesn't move on the outside. We are using cheap, plastic gears in the servo).
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The robot is assembled and powered from battery. User is able to command the robot wheels from the web interface.
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Am instalat Tomcat 8.5.14 si MySQL server 5.5 pe placuta UdooNeo, apoi am realizat o aplicatie web in Tomcat care sa faca legatura intre o interfata grafica in browser accesabila de catre utilizator si baza de date. Utilizatorul poate cere in request pentru o anumita data, ora si durata iar daca nu mai exista in request in acea perioada de timp utilizatorul primeste in cod pe care il poate folosi pentru a accesa serverul in perioada de timp ceruta.
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am implementat grafica 3D serverul de pe placuta controleaza pozitia,directia si comportamentul masinii.
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CanYouCMe - Milestone 2 - Conveyor Belt with optical sorter We implemented a mechanism which detects object presence and absence using image processing. The conveyor starts running when detects an object, and when there are not more objects, it stops. 
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La acest milestone trebuia sa conectez senzorii la placuta iar acestia sa detecteze miscarea si sa se activeze o alarma.
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We connected udoo to wireless Installed apache  We added some buttons to control the movement of the robot We had to put the web server on port 81 because we had some issues with apache and port 80
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Am imbunatatit partea de transmisie seriala pentru a putea trimite si Ack inapoi la server-ul de python pentru a verifica ca datele au fost primite de catre partea de arduino. Am implementat scrierea de semnale PWM pe ESC-uri pentru a putea controla motoarele Am construit drona pentru a putea testa toate componentele si controlul motoarelor Am folosit Neo.Gpio pentru a lua datele de la senzori si a le avea pe server-ul python
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