diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0f5fd65
--- /dev/null
+++ b/README.md
@@ -0,0 +1,48 @@
+# Read Resistances
+
+## Required & Dependencies
+### Required
+- Python 3 (but below 3.10). And the following packages using `pip`.  
+  Alternatively, you can just run `pip install -r requirements.txt` to have all packages installed automatically 
+  - matplotlib
+  - pyserial
+  - wxPython  
+- PlatformIO IDE, which could be downloaded as an extension in vs code
+### Recommended
+- Code Runner (for VSCode only)
+- wxFormBuilder
+- Arduino IDE
+
+## How to use
+### Direct use
+ First download the `.ino` file from `ReadRaw` folder using Arduino IDE. Or if you are using Arduino Mega 2560 you can 
+use the code in `ReadAnalog` folder by open the folder in VSCode and run with PlatformIO, or just run `flash.py` in a terminal
+Then you can just run `python toplevel.py` and start from the UI. Enter the relevant information and start collect and measuring data.
+### develop & build
+Beside the c-based code for the Arduino board to read raw data from the board, everything has now been done in the python
+files. The main program is `toplevel.py`, which calls `UI.py` to prompt for input. It is NOT recommended modifying the `ui.py`
+as it is generated from wxFormBuilder from `sealammonia.fbp`, which could be modified if any frontend feature need to change.
+the main program will generate `settings.json` which saves all required parameters needed to calculate and graph and save the
+sensor's values. It also creates a .csv file under `RecordedData` directory to save all recorded+calculated data.  
+`read_arduino.pyw` read raw data from Arduino board and convert it to the correct resistance, which could be plotted out 
+using `serial_plot.pyw`. Note that all .pyw are still Python files and should be correctly opened using any IDE/text edtiors
+as .py file does, except not going to pop up a black terminal when running directly. `test.py` is the old main and may not
+currently running properly
+
+## Issues
+- Currently can only use 5V as input voltage. May need to change the algorithm in `read_arduino.py`
+- Should call `writerandomvalues.py` to simulate Arduino data when nothing is connected but user still want to run. Currently just pop up error
+- "plot" button is completely disabled, should be enabled whenever is not plotting but is reading data
+
+## Todos & specs:
+- [ ] Fix Issues
+- [ ] display sensor value in either the UI or on the plot
+- [ ] Reopen plot window from the UI when closed
+- [x] Need to continue writing to file when graphing window is closed
+- [ ] Make it so the time stamp is the actual time
+- [x] No blank line in between lines of csv file (new line may be added when file is closed) 
+- [ ] Make it so we have the option to run multiple graphs at the same time, setting window size in UI
+- [ ] Inputting value of 0 for window size should have an infinite window size
+- [ ] Accept any inputs (such as resistor values, plot window size, base voltage etc.) as either command line argument or as input at beginning of program
+- [ ] Write random values to simulate a sensor if no sensor available (this feature might be removed in the future)
+- [ ] Advanced option menu in the UI to allow user to make more adjustments
diff --git a/SeeDatResistance.iml b/SeeDatResistance.iml
index ad3c0a3..597619a 100644
--- a/SeeDatResistance.iml
+++ b/SeeDatResistance.iml
@@ -6,4 +6,7 @@
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
+  <component name="PackageRequirementsSettings">
+    <option name="versionSpecifier" value="Don't specify version" />
+  </component>
 </module>
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..2f2cc08
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,6 @@
+numpy
+requests
+future
+matplotlib
+wxPython
+pyserial
\ No newline at end of file
diff --git a/toplevel.py b/toplevel.py
index b8bab8f..949bc50 100644
--- a/toplevel.py
+++ b/toplevel.py
@@ -18,7 +18,7 @@ def main():
     #################### USER INPUTS ###########################
     # TODO: if there is already a setting.json exist, loads all inputs from there as 'default'
     # 9840
-    resistors = [int(text3.get()), int(text4.get()), 0, 0]  # resisters for each An port, where n is an integer from 0-3. Use 0 if none. in Ohms
+    resistors = [int(text3.get()), int(text4.get()), 0, 0, 0]  # resisters for each An port, where n is an integer from 0-3. Use 0 if none. in Ohms
     input_voltage = 5
     adjusted_volt = 5
     port = get_devices()[0]