Maker Pro

MedUino - Smart Medicine Reminder with Arduino

September 24, 2018 by Ashraf Minhaj

An automated Medicine Reminder that reminds you to take your medicine in time.



1 Arduino.ide

An arduino Based smart device that helps you to take medicine in time.

We all need to take medicine at some time. Also, we do need to look after our parents or elderly and giving medicine in time is the most Important task, specially when they are antibiotics. I decided to make one for my mother. I feel relieved that even when I'm not be around, as my automatic medicine reminder, MeDuino, will take care of her. Love you, mother!


I have wanted to make this as simple as possible. So I didn't use any RTC module but I've used Arduino delay function to work.

24 hours = 24 * 60 minutes

= 24 * 60 * 60 seconds

= 24 * 60 * 60 * 1000 miliseconds (1sec = 1000mili second)

= 86400000 ms

After restarting the Arduino it waits for 24 hours and then keeps on buzzing. Change the delay as your requirement. It won't stop until you press the restart button, which means you have to get to your medicine box in order to stop the alarm. And after you press the button it'll alarm again after 24 hours.

Upload the following code onto the Arduino Pro Mini. To program the Arduino Pro Mini, you need to use a USB to TTL converter but you can also use your Arduino Uno as USB to TTL converter.

We don't have a USB programming option on Pro Mini. Use a USB to TTL converter or an Arduino Uno. We all have an Uno, right? So why waste money? Just remove the ATmega328P IC from the Uno using a screwdriver to lift it up.

Then connect the pins as following:

  • UNO -------- Pro mini
  • 5v---------------vcc
  • Gnd------------Gnd
  • tx----------------tx
  • rx----------------rx
  • reset----------- rst

Then up the Code.

Circuit Diagram

/* MeDuino: Automatic Medicine reminder.
 *  By Ashraf Minhaj
 *  For any query mail at [email protected]
 *  Use this and you'll never miss your medicine.
 *  This is made for my Mother - Sahida Rahman.

const int blue = 3;     // Connect BLUE LED to pin 3
int buz = 2;            // Buzzer on pin 2

void setup() 
   // initialize the LED & Buzzer pin as Output:
  pinMode(blue, OUTPUT);

void loop() 
  tone(buz,1000,100); //Beep for 1 second- Starting Sound
  delay(86400000);   /*delay 24 hrs. untill next period to take med.
                      * 24hr * 300s * 1000ms */
  goto buz;         //going to buz: goto Statement

    digitalWrite(blue, HIGH);  //Blue led on
    digitalWrite(blue,LOW);  //LEd off --thus BLINK
    tone(buz,1000,150); //Start beeping
    goto buz;

    /*going again to buz: so that the Code runs 
     untill you come near the 
     Medicine Box and Push the reset switch*/


Ashraf Minhaj

A Computer Science and Engineering student and a Hobbyist. Love to make robots, DIY gadgets. Interested in robotics and AI. 

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