Friday, December 5, 2025

Multi-Tasking Reminder Gadget With Electronic Calendar


This multitasking gadget supports elderly patients with memory impairments, individuals with infectious diseases, and students who need help staying organised. Equipped with a real-time clock, it functions year-round as an electronic calendar, accurately displaying the day, date, time, and year.

It reinforces daily routines by issuing timely reminders for medication, study sessions, homework, playtime, and bedtime. If an alarm is ignored, a message is sent to a designated mobile phone, prompting necessary action.

POC Video Tutorial

Required components are listed in Bill of Materials table, while Fig. 1 presents the author’s prototype.

- Advertisement -
Fig. 1: Author’s prototype

Circuit and working

Fig. 2 shows the circuit diagram of the multitasking reminder and electronic calendar. It is built around an Arduino Uno (MOD1), RTC3231 (MOD2), SIM800L GSM module (MOD3), a 16×2 LCD I2C module (MOD4), a buzzer, and a few other components.

Fig. 2: Circuit diagram

The key components include:

- Advertisement -

EFY Icon

Sorry! You cannot read this post further, as this is for EFY PRIME subscribers only.

EFY PRIME subscribers get access to our BEST content, in an AD-free environment for readers who value faster and clutter-free reading experience.

If you're already an EFY PRIME subscriber, please login below. Else, please make a small investment by
CLICKING HERE and upgrade your level to access this and many more of such content.

SHARE YOUR THOUGHTS & COMMENTS

Rakesh Jain
Rakesh Jain
Rakesh Jain, Assistant Professor in ECE Department in Geetanjali Institute of Technical Studies, Udaipur, holds a master’s degree in VLSI, BE degree in electronics and communication, and diploma in electronics. His research areas are sensors and microcontrollers, and he has 31 copyrights, 9 design patent registrations, 3 Indian utility patents. He is recipient of Mewar Scientist Award 2023.
×