FP update

docs/Project Development.md

@@ -29,14 +29,6 @@ finish quality
 
 3. Development
 ---
-
-
-4. Important and interesting links
----
-[Project Development class notes](http://academy.cba.mit.edu/classes/project_development/index.html) + [video](https://vimeo.com/558297880)  
-
-
-
 ####About vertical farming
 Vertical farming is the practice of food production that takes the form of vertically stacked layers and vertically inclined surfaces. The method is executed inside a controlled environment building, usually without soil or natural light.
 
@@ -81,7 +73,7 @@ Decisions to make successful growing:
 #### Process
 * First I started by making a CAD model in Rhino. I explored multiple forms.
 ![forms](./images/final-project/forms.jpg)
-Since I need to make as many parts as possible in the lab instead of buying parts, I modify the design to make it simpler.
+Since I need to make as many parts as possible in the lab instead of buying parts, I modify the design to make it less curved and simpler to cut and assemble.
 ![](./images/final-project/CADv1.png)
 ![](./images/final-project/v0.jpg)
 
@@ -93,7 +85,8 @@ I listed out the inputs and outputs to include in the design after studying some
   1. DHT11 - temperature and humidity sensor  
   2. Phototransistor - to measure ambient light intensity  
   3. Potentiometer / variable resistance - to control flow of water through pump  
-  4. Potentiometer / variable resistance - to control grow light intensity   
+  4. Potentiometer / variable resistance - to control grow light intensity
+  5. Toggle switch for power on/off  
 
 ####Outputs are:  
   1. 12V DC pump to pump water through a sprinkler system  
@@ -132,25 +125,37 @@ The temperature and humidity sensor DHT11 has 3 pins - 5V power, GND and data wh
 Ref: [Introduction to DHT11](https://www.theengineeringprojects.com/2019/03/introduction-to-dht11.html)
 ![](./images/final-project/dht11.png)
 
-I need to read more about which display to choose - for now I'm adding a 16x2 character LCD with I2C to make serial communication easier and use less pins on the MCU, only SDA and SCL.
-![](./images/final-project/lcd.png)
+I use an OLED SSD1306 with I2C to make serial communication easier and use less pins on the MCU, only SDA and SCL.  
+![](./images/final-project/lcd.png)  
 
 A 12V DC water pump is connected to the MCU with a n-channel MOSFET so I can control the flow of water using Pulse Width Modulation.
 ![](./images/final-project/mosfet-pump.png)
 
-A 12V DC LED growlight strip is connected to the MCU with a n-channel MOSFET so I can control the light intensity. These come in different ratios of red-blue lights. I use one with 3:1 meant for leafy plants.  
+Similarly the 12V DC LED growlight strip is connected to the MCU with a n-channel MOSFET so I can control the light intensity. These come in different ratios of red-blue lights. I plan to use one with 3:1 meant for leafy plants.
 ![](./images/final-project/mosfet-led.png)  
 
-Next, I use KiCAD to put all the schematics together and begin to design my PCB.  
-![schematic v1](./images/final-project/schematic.png)
-
-While making the schematic I realise not all sensors and actuators need to be on the PCB itself, some like the pump and the led and the DHT11 need to be at a different physical location on the designed box, so I need to add header pins and connect them using wires later.
+Next, I use KiCAD to put all these schematics together and begin to design my PCB.  
+While making the schematic I realise not all sensors and actuators need to be on the PCB itself, some like the pump and the LED and the DHT11 need to be at a different physical location on the designed box, so I need to add header pins and connect them using wires later.
 To clarify this, I begin modifying my 3D CAD model on Rhino.
+![wiring](./images/final-project/wiring.png)  
+![wiring2](./images/final-project/wiring2.png)  
+
+And then redo the schematic.
+![schematic v7](./images/final-project/farming-v7.png)  
+
+Next, I generate the Netlist and load it in the pcbnew of KiCAD. I arrange all header pins in a linear fashion so that they do not get jumbled and don't cross each other like in the model.  
+
+
 
-![schematic v5](./images/final-project/farming.v5.schematic.jpg)
+Some failed attempts:
+![]()  
 
-[traces](./images/final-project/farming.v6-traces.png)
-[outline](./images/final-project/farming.v6-outline.png)
+After about 7 revisions, changing minor details, I made  
+
+Here are the final design files for the board:  
+[Schematic v7](./images/final-project/farming-v7.pdf)  
+[Traces png](./images/final-project/farming.v6-traces.png)  
+[Outline png](./images/final-project/farming.v6-outline.png), containing the holes too.  
 
 ####Things to do next:
 Milling prcoess
@@ -158,6 +163,18 @@ Soldering Components
 Testing board
 Connecting all inputs and outputs
 
+####Milling the PCB
+
+####Soldering components
+
+####Testing board
+
+####Wires and wiring
+Connecting all inputs and outputs
+
+
+
+
 ####Programming:
 I will use the FabISP I made in Electronics Production week as a programmer to program my farming board with all the inputs and outputs.
 
@@ -197,21 +214,19 @@ Brim
 KICAD symbol and footprint guide:
 https://app.ultralibrarian.com/content/help/index.htm?converting-ultra-librarian-dow.htm
 
-####References
-Controlled Environment Agriculture (CEA): https://cea.cals.cornell.edu/about-cea/  
-Basics of homegrown vertical farms:
-https://www.diys.com/vertical-farming/  
+
+4. Important and interesting links
+---
+[Project Development class notes](http://academy.cba.mit.edu/classes/project_development/index.html) + [video](https://vimeo.com/558297880)  
+[Controlled Environment Agriculture (CEA)](https://cea.cals.cornell.edu/about-cea/)    
+[Basics of homegrown vertical farms](https://www.diys.com/vertical-farming/)    
 https://ecowarriorprincess.net/2017/11/a-beginners-guide-to-vertical-farming/  
-Aquapioneers: business integrating product and services for aquaponic farming http://aquapioneers.io/  
-Modular Vertical Farming projects:
-https://hackaday.io/project/5084-modular-vertical-farming  
-https://moltkegarden.com/  
-Lighting:
-https://www.lighting.philips.com/main/products/horticulture/hortiblog/vertical-farming/how-to-build-a-successful-vertical-farm  
-True garden:
-https://truegarden.com/residential/  
-http://www.conceptualdevices.com/2015/03/farm-x-the-first-modular-vertical-farm-concept-unveiled-almost/  
- FARM-X. The First Modular Vertical Farm Concept (Almost) Unveiled :   
+[Aquapioneers: business integrating product and services for aquaponic farming](http://aquapioneers.io/)    
+[Modular Vertical Farming projects](https://hackaday.io/project/5084-modular-vertical-farming)  
+[Moltkegarden](https://moltkegarden.com/)  
+[Lighting](https://www.lighting.philips.com/main/products/horticulture/hortiblog/vertical-farming/how-to-build-a-successful-vertical-farm)
+[True garden](https://truegarden.com/residential/)  
+[FARM-X: The First Modular Vertical Farm Concept (Almost) Unveiled](http://www.conceptualdevices.com/2015/03/farm-x-the-first-modular-vertical-farm-concept-unveiled-almost/)  
 https://create.arduino.cc/projecthub/dymonxd/diy-grow-led-light-designing-a-better-sun-1adec1
 
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