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Shahariar
Published © CC BY-SA

Portable Medical Commode for Mobility Impaired Patients

A demonstration of touch control-based user interface for portable medical commode with all the quirks of a fully-fledged toilet

IntermediateWork in progress12 hours531
Honorable Mention Mobility Impairments
Build2gether 2.0 β€” Inclusive Innovation Challenge
Portable Medical Commode for Mobility Impaired Patients

Things used in this project

Hardware components

PSoC 4 Prototyping Kit
Cypress PSoC 4 Prototyping Kit
×1
SG90 Micro-servo motor
SG90 Micro-servo motor
×2
Fermion: Voice Recorder Module (Breakout)
DFRobot Fermion: Voice Recorder Module (Breakout)
×1
Grove - OLED Display 1.12'' V2
Seeed Studio Grove - OLED Display 1.12'' V2
×1
Stereo Enclosed Speaker - 3W 8Ξ©
DFRobot Stereo Enclosed Speaker - 3W 8Ξ©
×1
Grove - Vibration Motor
Seeed Studio Grove - Vibration Motor
×4
BOOSTXL-ULN2003 ULN2003A Dual Stepper Motor BoosterPack
Texas Instruments BOOSTXL-ULN2003 ULN2003A Dual Stepper Motor BoosterPack
×2
Laser Diode, Visible
Laser Diode, Visible
×4
Axial Fan, 10" Exhaust
Axial Fan, 10" Exhaust
×1
DFRobot Water Pump
×1
Hair Dryer 2000W Generic
×1
Plastic Portable Commode
×1
Flexible Pipes
×1

Software apps and online services

Cypress PSoC Creator

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)

Story

Read more

Schematics

sch int

PSoC Internal Schematic

sch_final_corrv1_veHabqF3TD.bmp

Code

main.c

C/C++
final code (bug fixed)
#include <project.h>
#include <stdlib.h>
#include <stdio.h>
#include "ssd1306.h"

#define DISPLAY_ADDRESS 0x3C // I2C Oled address 0x3C

uint8_t which_button; // keeps track of which button is touched
uint8_t wash_speed = 0; //  finger position on linear slider
uint16_t x_pos; //  x position of finger on trackpad
uint16_t y_pos; //  y position of finger on trackpad


// following function will display text msg on OLED screen //

void show_info_on_OLED (char line1[7],char line2[7])
{
        display_clear();    
        gfx_setCursor(0,0);
        gfx_print(line1);
        gfx_setCursor(0,32);
        gfx_print(line2);
        display_update();
    
}

// main loop

int main()
{
    // Start I2C to drive OLED display
    I2COLED_Start();
    
    // start 2 PWM blocks to control servos 
    PWM_1_Start();
    PWM_2_Start();
    //PWM_3_Start();
    
    // enable global interrupt
    CyGlobalIntEnable;
    
    // start capsense and set baseline for parasitic capacitance compensation
    CapSense_Start();
    CapSense_InitializeAllBaselines();
    // Baseline is critical for proper operation of capsense
    // when this function is doing its thing, do not touch anything !
    
    // init OLED display and set font, orientation, color
    display_init(DISPLAY_ADDRESS);
    gfx_setRotation(2);
    gfx_setTextSize(3);   
    gfx_setTextColor(WHITE);
    
          /// welcome message /// 
    //    show_info_on_OLED("CAPSENS"," PSOC 4");
    //    CyDelay(2000);
    //    show_info_on_OLED(" TOUCH ","CONTROL");    
            
        
    for(;;)
{

        
        while ( CapSense_IsBusy() !=0 )
        {
        } // wait until something is being sensed on capsense electrodes    
         
          // process all capsense interfaces/sensors
            CapSense_ProcessAllWidgets();
            CapSense_IsAnyWidgetActive();
        
        // get latest finger position on touchpad 
        if( CapSense_IsWidgetActive(CapSense_TOUCHPAD0_WDGT_ID)) 
        {
        uint32_t xy = CapSense_GetXYCoordinates(CapSense_TOUCHPAD0_WDGT_ID);
        show_info_on_OLED(" AIMING"," NOZZLE");
                
        // separate xy coordinate of finger pos on touchpad 
            if (xy != 0xFFFF)
            {
            y_pos = xy >> 16;
            x_pos = (uint16)xy; 
            }

        }
        
        
    // process touch buttons pressed by user and perform operation
        if( CapSense_IsWidgetActive(CapSense_BUTTON0_WDGT_ID)) 
        {
        which_button = 0;
        show_info_on_OLED("HOT AIR"," DRYER");
        Hot_Air_Dryer_Write(!(Hot_Air_Dryer_Read()));
        ButtonLED2_Write(!ButtonLED2_Read());
        CyDelay(700);
        }    
        else if( CapSense_IsWidgetActive(CapSense_BUTTON1_WDGT_ID))
        {
        which_button = 1;
        show_info_on_OLED("ENABLE","WASHING");
        ButtonLED6_Write(!ButtonLED6_Read());
        CyDelay(700);
        }    
        else if( CapSense_IsWidgetActive(CapSense_BUTTON2_WDGT_ID))
        {
        which_button = 2;              
        show_info_on_OLED("DISABLE","WASHING");
       // ButtonLED5_Write(!ButtonLED5_Read());
       CyDelay(700);
  
        }    
        else if( CapSense_IsWidgetActive(CapSense_BUTTON3_WDGT_ID))
        {
        which_button = 3;
        show_info_on_OLED("ANTINUM","MASSAGE");
        Anti_Numb_Massage_Write(!(Anti_Numb_Massage_Read()));
        ButtonLED1_Write(!ButtonLED1_Read());
        CyDelay(700);
        }    
        else if( CapSense_IsWidgetActive(CapSense_BUTTON4_WDGT_ID))
        {
        which_button = 4;
        show_info_on_OLED("NO ODOR","EXT FAN");
        Odor_Extractor_Fan_Write(!(Odor_Extractor_Fan_Read()));
        ButtonLED3_Write(!ButtonLED3_Read());
        CyDelay(700);
        }
        else if( CapSense_IsWidgetActive(CapSense_BUTTON5_WDGT_ID))
        {
         which_button = 5;
         show_info_on_OLED("PRIVACY","  MODE ");
         ButtonLED4_Write(!ButtonLED4_Read());
         for(int i = 0; i <3; i ++)
        {
         WhiteNoise_PrivacyMode_Write(0);
         CyDelay(250);
         WhiteNoise_PrivacyMode_Write(1);
         CyDelay(250);
         } 
        }
        
        // process touch slider to adjust wash speed
        
        if(CapSense_IsWidgetActive(CapSense_LINEARSLIDER0_WDGT_ID))
        {
        wash_speed = CapSense_GetCentroidPos(CapSense_LINEARSLIDER0_WDGT_ID);
        show_info_on_OLED("WASHING"," SPEED ");
        }
        
        // control servo to aim water sprayer nozzle
        
        if (x_pos<=100 && which_button == 1)
        {
        PWM_1_WriteCompare(4380+(x_pos));
        }
        
         if (y_pos<=100 && which_button == 1)
        {
        PWM_2_WriteCompare(4460+(y_pos));
        }
        
        //  disable spray water pump's pwm drive 
        if (which_button == 2)
        {
        PWM_3_Stop();
        }
        
        //  enable spray water pump's pwm drive 
        
        if (which_button == 1)
        {
        PWM_3_Start();
        
        // adjust water flow rate with pwm ducy
            if (wash_speed>=10 &&  wash_speed<=100 )
            {
            PWM_3_WriteCompare(480*(wash_speed/10));    
            }
        }
        
        // scan all capsense for new user input
        CapSense_ScanAllWidgets();     
        //CapSense_UpdateEnabledBaselines();
         
    } // end of forever
} // end of main

full code

C/C++
Unzip and Import to PSoC Creator 4.4 IDE
No preview (download only).

Credits

Shahariar
77 projects β€’ 275 followers
"What Kills a 'Great life' is a 'Good Life', which is Living a Life Inside While Loop"

Comments

Awards
Honorable Mention Mobility Impairments
Build2gether 2.0 β€” Inclusive Innovation Challenge
Related channels and tags
  • Cypress
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  • Infineon
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  • Sensors
  • Texas Instruments