I have developed 2 projects:
The goal of project is to implement a switching of light on and off using a UV sensor or switch button and Raspberry Pi. This project is extention of ELMA: https://github.com/klavinslab/elma. I will extend the given example https://github.com/klavinslab/elma/blob/master/examples/toggle-switch.cc to Rapberry Pi.
When the UV sensor senses an object it will turn the red led light on or when the user presses the button it will turn the red led light on. When there is no object around it will turn green led light on or when the user releases the button it will turn the green led light on.
- Rapberry Pi
- LED's
- Visual studio C++
- UV Sensor
- Switch Button
- ELMA
- Setting up Raspberry pi 3. (3/12/2019)
- Setting up ELMA into Raspberry pi 3. (3/14/2019)
- Gathering sensors and LED's. (3/15/2019)
- Prototype phase 1 and run initial code to ensure Rpi is setup. (3/18/2019)
- Final setup and final code with sensor implementation. (3/20/2019)
- Documentation and final submission. (3/22/2019)
- Setting up Raspberry pi 3. (3/12/2019)
- Setting up ELMA into Raspberry pi 3. (3/13/2019)
- Gathering sensors and LED's. (3/14/2019)
- Prototype phase 1 and run initial code to ensure Rpi is setup. (3/15/2019)
- Final setup and final code with led implementation. (3/16/2019)
- Due to unavailibility of UV sensor developed another project Vending Machine
- Implemented vending machine and refactoring elma-project (3/21/2019)
- Documentation and final submission. (3/23/2019)
- I have setup my Raspberry pi with Raspbian OS. I have also used ELMA as library (https://github.com/klavinslab/elma) into my project from an example (https://github.com/klavinslab/elma_project). I have also gathered UV sensor along with LED's and developed starter code to blink LED's on and off. Currently I can blink LED on/off using WiringPi library. Next step is to set UV sensor and change state of LED depending on UV sensor output.
- Due to limitation of implementing UV sensor I implemented blinking of led in raspberry pi and vending machine impleemntation as another project.
The source code for Elma is on Github.
First install required packages available through apt-get
sudo apt-get update
sudo apt-get install -y cmake
sudo apt-get install -y cppcheck
sudo apt-get install -y graphviz
sudo apt-get install -y doxygen
sudo apt-get install -y cmake
sudo apt-get install -y libssl-dev
Next, install Google Test
cd /usr/src
sudo git clone https://github.com/google/googletest.git
cd googletest
sudo mkdir install
cd install
sudo cmake ../
sudo make
sudo make install
Next, install the json library
sudo mkdir /usr/local/include/json
cd /usr/local/include/json
sudo curl -O -J -L https://github.com/nlohmann/json/releases/download/v3.5.0/json.hpp
sudo mv json.hpp json.h
Next, install httplib
cd /tmp
git clone https://github.com/klavins/cpp-httplib.git
sudo mkdir /usr/local/include/httplib
sudo mv /tmp/cpp-httplib/httplib.h /usr/local/include/httplib
Now you should be ready to install elma:
cd Desktop
mkdir Code
cd Code
git clone https://github.com/klavinslab/elma.git
cd elma
make
Note that the Makefile should detect if you are on a pi by using the command
uname -m
which on a pi 3 model B+ returns 'armv71'. If your pi is different, you might need to change the ifeq statments in test/Makefile and examples/Makefile.
If you would like to treat elma as a library, so you can link in other code, you should link to the relevant files in to the unversal system resources (usr) as follows:
ln -s include /usr/local/include/elma
ln -s lib/libelma.a /usr/local/lib/libelma.aThen you can do
#include "/home/pi/Desktop/Code/elma/include/elma.h" in your code and use the -lelma flag while linking. See the example elma project for an example.
cd Desktop
cd Code
git clone https://github.com/mihirmodi29/ELMA_Switch_Rpi
cd ELMA_Switch_Rpi
make
Connect LED as follow to pin 11:
To run the ELMA_Switch_Rpi, type
bin/toggle-switch
I would like to thank Prof. Klavins for the awesome coursework material.
This software is open source and uses the MIT license. Details can be found here.