63 lines
4.7 KiB
Markdown
63 lines
4.7 KiB
Markdown
# Read Resistances
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Read the resistance of a voltage divider using ESP32
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## Required & Dependencies
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### Required
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- Python 3 (but below 3.10). And the following packages using `pip`.
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Alternatively, you can just switch the file source of the Command line Prompt by using 'cd <Project_File_Directory>' and after that, run `pip install -r requirements.txt` in to have all packages installed automatically
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- matplotlib
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- pyserial
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- wxPython
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- PlatformIO IDE, which could be downloaded as an extension in vs code
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- ESP32 WROOM-32 Development Board
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### Recommended
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- Code Runner (for VSCode only)
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- wxFormBuilder
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- [Arduino IDE](https://makeabilitylab.github.io/physcomp/arduino/arduino-ide.html)
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## How to use
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### Direct use
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First download the `.ino` file from `espVoltmeter` folder using Arduino IDE. ~~Or if you are using Arduino Mega 2560 you can
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use the code in `ReadAnalog` folder by open the folder in VSCode and run with PlatformIO, or just run `flash.py` in a terminal~~
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(Arduino Mega and Uno boards are no longer supported. Please use [this link](https://docs.espressif.com/projects/arduino-esp32/en/latest/installing.html) to
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use on Arduino IDE or PlatformIO for VSCode)
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For Windows you can just [download the released executable](https://github.com/Seal-Ammonia/Read-Sensor-Resistances/releases/download/beta/SeeDatResistance.exe) to use. Make sure to disable any virus-scanning software when download as Microsoft incorrectly recognized PyInstaller as virus. For non-Windows systems you can just run `python test.py` and start from the UI. Enter the relevant information and start collect and measuring data. If you do not have a board avaliable, leave the dropdown menu in the UI as "no device" and it will run a simulation.
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### develop & build
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Beside the c-based code for the Arduino board to read raw data from the board, everything has now been done in the python
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files. The main program is `test.py`, which calls `UI.py` to prompt for input. It is NOT recommended modifying the `ui.py`
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as it is generated from wxFormBuilder from `sealammonia.fbp`, which could be modified if any frontend feature need to change.
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the main program will generate `settings.json` which saves all required parameters needed to calculate and graph and save the
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sensor's values. It also creates a .csv file under `RecordedData` directory to save all recorded+calculated data.
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`read_arduino.py` read raw data from Arduino board and convert it to the correct resistance, which could be plotted out
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using `serial_plotter.py`. `frontend.py` is the alternative version of the frontend writting using `tkinter`, and `serial_plot.py`
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was an older version of `serial_plotter.py`. They are not longer supported.
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ATTENTION MAC USER: currently the software cannot correctly functional on mac (especially arm-based ones). You might need to consider to use it on a windows VM or using parallel desktop
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## Issues
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- Newer hardware will require 3.3V. ~~Currently can only use 5V as input voltage.~~ May need to change the algorithm in `read_arduino.py`.
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- axis window size is not correct
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- on PyInstaller, windows misdetected our executable as a virus
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- change the scale on Y-axis so that graph looks smoother
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- Errors thrown when >1 reference resistances entered
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## Todos & [Old Specs](https://docs.google.com/document/d/1Km2HZel7rILOvgHG5iXlUcXFx4Of1ot2I7Dbnq8aTwY/edit?usp=sharing):
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- [ ] Fix Issues
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- [ ] Automatically setup the driver for ESP32
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- [ ] programically to stablize the graph (change the y-scale of the graph to make the less dramatic)
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- [ ] (not urgent) make if runnable on Mac
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- [x] display sensor value in either the UI or on the plot
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- [x] Reopen plot window from the UI when closed
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- [x] Need to continue writing to file when graphing window is closed
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- [x] Make it so the time stamp is the actual time
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- [x] No blank line in between lines of csv file (new line may be added when file is closed)
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- [ ] Make it so we have the option to run multiple graphs at the same time, setting window size in UI
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- [x] Inputting value of 0 for window size should have an infinite window size
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- [x] 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
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- [x] Write random values to simulate a sensor if no sensor available (this feature might be removed in the future)
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- [x] Advanced option menu in the UI to allow user to make more adjustments
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- [ ] Add resolution option in the UI to allow interchange between arduino (10bit) and esp32 (12 bits)
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- [x] Possibly adding new module to support ESP32
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- [ ] Support for non-Windows platforms (and maybe mobile)
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- [ ] Make it into one executable
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- [ ] Possibly adding new module to support Arduino MEGA and older firmwares
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