EPS@ISEP | The European Project Semester (EPS) at ISEP

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report [2017/06/26 19:41] – [7.9.1 Electronics Tests] team1report [2017/06/27 19:01] (current) – team1
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 |RAM|Responsibility Assignment Matrix| |RAM|Responsibility Assignment Matrix|
 |ROHS|Restriction Of Hazardous Substances| |ROHS|Restriction Of Hazardous Substances|
 +|RTC|Real Time Clock|
 |SEO|Search Engine Optimization| |SEO|Search Engine Optimization|
 |SMART|Specific / Measurable / Attainable / Relevant / Time Based| |SMART|Specific / Measurable / Attainable / Relevant / Time Based|
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 ==== 1.7 Project Planning ==== ==== 1.7 Project Planning ====
  
-Every project needed to be planned carefully because a project plan gave an overview of all the tasks and deliverables that needed to be completed. Having a good project plan and following it well allowed the smooth running of the project, and kept the project running on schedule. Table {{ref>tpjctpn}} shows the planning used for this project. In [[report#time|Chapter 3.3]] there is a comprehensive project plan including a Gantt chart.+Every project needed to be planned carefully because a project plan gives an overview of all the tasks and deliverables that need to be completed. Having a good project plan and following it well allowed the smooth running of the project, and kept the project running on schedule. Table {{ref>tpjctpn}} shows the planning used for this project. In [[report#time|Chapter 3.3]] there is a comprehensive project plan including a Gantt chart.
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 <table tpjctpn> <table tpjctpn>
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 ==== 7.3 Architecture ==== ==== 7.3 Architecture ====
  
-==== 7.3.1 First Structural Drawings ====+=== 7.3.1 First Structural Drawings ===
  
 Figures {{ref>fsketch1}} and {{ref>fsketch2}} show the first structural drawings of the "EscarGO". These drawings were meant to be refined in a later stage, but they served as a good view of how the Team wanted the Escargot Nursery to look like. Figures {{ref>fsketch1}} and {{ref>fsketch2}} show the first structural drawings of the "EscarGO". These drawings were meant to be refined in a later stage, but they served as a good view of how the Team wanted the Escargot Nursery to look like.
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-==== 7.3.2 Cardboard Model ====+=== 7.3.2 Cardboard Model ===
  
 To begin with the architecture of the prototype, a cardboard model was made as a first approach to find out the optimal dimensions and opening system of the "EscarGO" that did not require an extra amount of free space around for its movement. The Team also used it to show the curtain system. It can be seen in Figures {{ref>fcard1}}, {{ref>fcard2}} and {{ref>fcard3}}. To begin with the architecture of the prototype, a cardboard model was made as a first approach to find out the optimal dimensions and opening system of the "EscarGO" that did not require an extra amount of free space around for its movement. The Team also used it to show the curtain system. It can be seen in Figures {{ref>fcard1}}, {{ref>fcard2}} and {{ref>fcard3}}.
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-==== 7.3.3 Initial 3D Model ====+=== 7.3.3 Initial 3D Model ===
  
 The Team created some initial three-dimensional (3D) models to see how the product would look like at the end of the project.  The Team created some initial three-dimensional (3D) models to see how the product would look like at the end of the project. 
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-==== 7.3.4 Final Structural Drawings ====+=== 7.3.4 Final Structural Drawings ===
  
 The Team had to do some brainstorming in order to fix the flaws found in the first design. The original pivoting opening system was not very likely to be long lasting, and therefore unsustainable. In order to keep the cover removal simple, the group decided not to host the technologies inside the cover and add a chamfer instead for that purpose. These changes in the product (see Figure {{ref>ffinal}}) were intended to make the "EscarGO" more user friendly. The Team had to do some brainstorming in order to fix the flaws found in the first design. The original pivoting opening system was not very likely to be long lasting, and therefore unsustainable. In order to keep the cover removal simple, the group decided not to host the technologies inside the cover and add a chamfer instead for that purpose. These changes in the product (see Figure {{ref>ffinal}}) were intended to make the "EscarGO" more user friendly.
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-==== 7.3.5 Final 3D Model ====+=== 7.3.5 Final 3D Model ===
  
 In this sub-section, the final 3D model is shown. The Team decided to use another technique for opening the terrarium instead of the pivoting system. The dimensions of the "EscarGO" would be 400 mm x 300 mm x 375 mm. Figure {{ref>f3d2}} shows an overview of the whole product. In this sub-section, the final 3D model is shown. The Team decided to use another technique for opening the terrarium instead of the pivoting system. The dimensions of the "EscarGO" would be 400 mm x 300 mm x 375 mm. Figure {{ref>f3d2}} shows an overview of the whole product.
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-==== 7.3.6 Technical Drawings ====+=== 7.3.6 Technical Drawings ===
  
 These technical drawings were made from the 3D model in Solidworks. These drawings are used as base for the making of the prototype. First of all there is an overview drawing of all components and the quantity is indicated on the bill of materials (see Figure {{ref>fgeheel}}). These technical drawings were made from the 3D model in Solidworks. These drawings are used as base for the making of the prototype. First of all there is an overview drawing of all components and the quantity is indicated on the bill of materials (see Figure {{ref>fgeheel}}).
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 <table label> <table label>
-<caption>Total costs "EscarGO"</caption>+<caption>Total Costs of Materials</caption>
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 | Total | 89.00 € | | Total | 89.00 € |
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   * The fan is represented by a 12 V motor.   * The fan is represented by a 12 V motor.
-  * Both LED modules are represented by 4500 LED lighting.+  * Both LED modules are represented by LED lighting.
   * The mains supplying a current of 12 V is represented by the battery of 9 V.   * The mains supplying a current of 12 V is represented by the battery of 9 V.
   * To finish the Nokia 5110 LCD screen is symbolized by the Nokia 6100 screen.   * To finish the Nokia 5110 LCD screen is symbolized by the Nokia 6100 screen.
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 ==== 7.9 Tests and Results ==== ==== 7.9 Tests and Results ====
  
-In this Section, the Team explains all tests performed and presents its results.+In this Section, the Team explains all tests (See section [[report#introduction|1.6 Functional Tests]]) performed and presents its results. 
 + 
 +The Team performed all the tests they thought that were necessary in the beginning. While developing the product they also decided to perform the soil tests to find the best way to keep the soil moist.
  
 === 7.9.1 Electronics Tests === === 7.9.1 Electronics Tests ===
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 The temperature and humidity sensor measured the temperature and the humidity in the terrarium. The expected temperature range is between 15 °C and 25 °C. The temperature and humidity sensor measured the temperature and the humidity in the terrarium. The expected temperature range is between 15 °C and 25 °C.
  
-The Team tested the DHT22 sensor alone in order to know if it worked correctly. First of all, the Team wrote a​ program ​to control the following system (see Figure {{ref>fhum}}).+As defined in section [[report#introduction|1.6 Functional Tests]], the Team tested the DHT22 sensor alone in order to know if it worked correctly. This was the first functional test that the team had planned. 
 +First of all, the Team wrote a​ program ​to control the following system (see Figure {{ref>fhum}}).
  
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 **7.9.1.2 Temperature and Humidity Sensor (DHT22) + the Fan** **7.9.1.2 Temperature and Humidity Sensor (DHT22) + the Fan**
  
-The next test was controlling the fan according to the values given by the sensor. The program specified, according to the conditions of life required by snails, that the fan should start to rotate from 25 °C. At the beginning, the monitor displayed a temperature of 27 °C. Logically, the fan started to spin. To see if the rest of the program worked, the fan was turned to the sensor to circulate air and to decrease the temperature to 25 °C. When the temperature reached 25 °C, the fan stopped proving that the circuit, as well as the program was working.+The next test was controlling the fan according to the values given by the sensor. The program specified, according to the living conditions required by snails, that the fan should start to rotate from 25 °C. At the beginning, the monitor displayed a temperature of 27 °C. Logically, the fan started to spin. To see if the rest of the program worked, the fan was turned to the sensor to circulate air and to decrease the temperature to 25 °C. When the temperature reached 25 °C, the fan stopped proving that the circuit, as well as the program was working.
  
 **7.9.1.3 LED Lighting** **7.9.1.3 LED Lighting**
  
-To test the LED operation, it was connected to a 12 V charger. As the lights went on, the test proved that the lighting worked.+In order to test the operation of the LEDs, we have supplied them with a current of 12V. To do this, we used an adapter between the fan and the mains current to convert the latter from a 230V current to the desired 12V current. As the lights went on, the test proved that the lighting worked.
  
 **7.9.1.4 The TSL2561** **7.9.1.4 The TSL2561**
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-In order to know if the sensor worked properly, the Team obstructed the passage of light by putting an obstacle between the sensor and the light sources. During the first test, the monitor showed the unique value of 65536 lux. After some research, the Team found that there was a contact issue. Thus, welds were made in order to reinforce the contacts. The second test allowed the Team to see that everything worked. When the light was obstructed the value in lux decreased, as can be seen on the screenshot of the monitor (see Figure {{ref>flux}}). It can also be seen in this [[https://youtu.be/Xr4cOkwapic|Video]].+In order to know if the sensor worked properly, the Team obstructed the passage of light by putting an obstacle between the sensor and the light sources. During the first test, the monitor showed the unique value of 65536 lx. After some research, the Team found that there was a contact issue. Thus, welds were made in order to reinforce the contacts. The second test allowed the Team to see that everything worked. When the light was obstructed the value in lx decreased, as can be seen on the screenshot of the monitor (see Figure {{ref>flux}}). It can also be seen in this [[https://youtu.be/Xr4cOkwapic|Video]].
  
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 **7.9.1.5 The TSL2561 + LED Lighting** **7.9.1.5 The TSL2561 + LED Lighting**
  
-The Team tested this part of the program controlling the LED according to the values given by the sensor. The program specified, as required by the snails, that the LED lighting should be turned on if the brightness was less than 50 lux. At the beginning, the monitor displayed a luminosity of 500 lux so, as expected, the LED lighting were off. When the Team obstructed the passage of light, the LED lighting lit.+The Team tested this part of the program controlling the LED according to the values given by the sensor. The program specified, according to the living conditions required by snails, that the LED lighting should be turned on if the brightness was less than 50 lx. At the beginning, the monitor displayed a luminosity of 500 lx so, as expected, the LED lighting were off. When the Team obstructed the passage of light, the LED lighting lit.
  
 **7.9.1.6 The Whole Electronic System** **7.9.1.6 The Whole Electronic System**
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 The Product Development section is the most important part of the project. This is where the design of the product is presented. The Team has created various 2D and 3D designs, as well as a 3D model out of cardboard. This section is where all the materials have been narrowed down and chosen. The Team did research on the materials that have been chosen to make sure that the materials are fit for purpose, and also to make sure that the electronic components are capable of what is required from them. In this part of the project all the programming was created and described, and electronic schematics done. The Team also did many different tests and experiments in this section of the project. The Product Development section is the most important part of the project. This is where the design of the product is presented. The Team has created various 2D and 3D designs, as well as a 3D model out of cardboard. This section is where all the materials have been narrowed down and chosen. The Team did research on the materials that have been chosen to make sure that the materials are fit for purpose, and also to make sure that the electronic components are capable of what is required from them. In this part of the project all the programming was created and described, and electronic schematics done. The Team also did many different tests and experiments in this section of the project.
  
-The Product Development Section proved to be very rewarding for the Team as they learned the most in this Section, and learned new skills they didn't have before. The Team developed the prototype and learned what would and would not work in the final product. Another benefit from this work is that the Team was able to make informed decisions of what they would change about the product given more time, and before it went out to the Marketplace.+The Product Development Section proved to be very rewarding for the Team as they learned the most in this Section, and learned new skills they didn't have before. The Team developed the prototype and learned what would and would not work in the final product.
 ===== 8. Conclusions ===== ===== 8. Conclusions =====
-With this report, the Team developed a product which fitted and even exceeded the requirements that were given.+With this report, the Team developed a product which achieved the requirements that were set, as can be seen in Section [[report#introduction|1.5 Requirements]].
  
 First, the Team did some research about Escargot Nurseries in the State of Art. The Team found out that there were no competitors for the product they wanted to develop. Project management was an important tool for the team members to identify all the tasks and time limits, to guide the cost and the budget, to measure the risks and to analyse the responsibilities of the people that were involved. In the marketing Section, the Team chose their logos and commercial names and decided to launch the product in France using an online marketplace. To develop the "EscarGO", the Team needed to think about sustainability and ethics. After all those steps, the Team could develop and built a prototype with a potential market.  First, the Team did some research about Escargot Nurseries in the State of Art. The Team found out that there were no competitors for the product they wanted to develop. Project management was an important tool for the team members to identify all the tasks and time limits, to guide the cost and the budget, to measure the risks and to analyse the responsibilities of the people that were involved. In the marketing Section, the Team chose their logos and commercial names and decided to launch the product in France using an online marketplace. To develop the "EscarGO", the Team needed to think about sustainability and ethics. After all those steps, the Team could develop and built a prototype with a potential market. 
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 The design of the “EscarGO” needed to be simple but attractive with not too much technology. From the results of the marketing study (where a survey was conducted), the potential user wanted a simple product, so the Team took this in account while developing the prototype. The “EscarGO” is meant to be placed in the kitchen or the living room of a house. At the beginning of the project, when the Team started with designing the prototype, the Team was thinking of adding a pivoting system to the “EscarGO”, but it was decided not to use this system  because it was too difficult to make and not user-friendly enough. The solution was to get the top off the product to get the curtains out to clean. It was also more user-friendly because there was no extra space needed. The design of the “EscarGO” needed to be simple but attractive with not too much technology. From the results of the marketing study (where a survey was conducted), the potential user wanted a simple product, so the Team took this in account while developing the prototype. The “EscarGO” is meant to be placed in the kitchen or the living room of a house. At the beginning of the project, when the Team started with designing the prototype, the Team was thinking of adding a pivoting system to the “EscarGO”, but it was decided not to use this system  because it was too difficult to make and not user-friendly enough. The solution was to get the top off the product to get the curtains out to clean. It was also more user-friendly because there was no extra space needed.
  
-There were some problems with programming during the project because of some connections and nobody of the Team ever worked before with Arduino. But the Team solved everything and almost all tests could be done. There were also time constraints and the heating element could not be added on time for the prototype but will be used in the final product. Because of the time constraints, it was not possible to test the water tank. The fan is only used to circulate air, so an air conditioning unit was discussed but that was too cost prohibitive. While the Team was developing the electronic system, they discovered that their design could be made simpler, with more time and learning experience, but they couldn't buy the components on time for the prototype, so this option could be used for the final product.+There were some problems with programming during the project because of some bad connections and nobody in the Team had ever worked with Arduino before. But the Team solved everything and almost all tests could be done. There were also time constraints and the heating element could not be added on time for the prototype but will be used in the final product. Because of the time constraints, it was not possible to test the water tank.  While the Team was developing the electronic system, they discovered a more ingenious solution. For the prototype it was necessary to connect the Arduino board to a computer at all times in order to operate the program. This is because the time had to be synchronized with the computer, and would loose the time data if switched off. This solution was not optimal and not practical. In order to be connected to a computer, the Team thought of including a Real Time Clock (RTC), price; 5.90 € but unfortunately the Team did not have time to buy it for the prototype. 
  
 ==== 8.2 Future Development ====   ==== 8.2 Future Development ====  
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 Another addition that the Team considered is adding controls so that the humidity and temperature can be changed to suit different insects or reptiles. Controls for the time function, such as a real-time clock, would also be included in the final product, but for the prototype the Team was limited by cost so these details couldn't be added. Another addition that the Team considered is adding controls so that the humidity and temperature can be changed to suit different insects or reptiles. Controls for the time function, such as a real-time clock, would also be included in the final product, but for the prototype the Team was limited by cost so these details couldn't be added.
  
-In the prototype, there is a water tank included to keep the soil moist. The team did some tests with poly-acrylate and microspheres. The microspheres are an improved solution compared with the water tank so for the future the Team wants to include the microspheres in addition to the water tank. These are not harmful for the snails and the family can make those Microspheres together to make the family bond stronger.+In the prototype, there is a water tank included to keep the soil moist. The team did some tests with poly-acrylate and microspheres. The microspheres are an improved solution compared with the water tank so for the future the Team wants to include the microspheres in addition to the water tank. These are not harmful for the snails and the family can make those microspheres together to make the family bond stronger.
  
-Another test that needs to be completed is, testing if the snails are comfortable within the prototype. This was necessary because they need to live in the "EscarGO".+Another test that needs to be completed is, testing if the snails are comfortable within the prototype. This was necessary because they need to live in the "EscarGO". The team did not have time to test the prototype with the snails because to monitor the growth and quality of life of the snails would require a minimum of 3 months of living within "EscarGo".
  
 ==== 8.3 Project Conclusions ====  ==== 8.3 Project Conclusions ==== 

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