Tablet Reminder Uses Watch Module
The medication reminder device is designed to provide an effective solution for individuals needing assistance in adhering to their medication schedules. The core of the system is a crystal watch, which ensures accurate timekeeping, while the 4001 quad 2-input NOR gate serves as the primary logic component. The RS flip-flop configuration, utilizing gates IC1a and IC1b, allows for a stable state to be maintained until the alarm is triggered.
When the set time for medication arrives, a high signal is generated through diode D1, leading to the setting of the RS flip-flop. This mechanism ensures that the alarm can be activated reliably at the designated time. The oscillator, constructed with gates IC1c and IC1d, functions to produce a periodic output that drives an LED indicator. The choice of a 10% duty cycle for the LED ensures that it flashes at intervals that are noticeable yet conserves battery power.
The inclusion of a 10nF capacitor plays a crucial role in the reset function of the watch alarm. When a positive voltage is detected on pin 3 of IC1, the capacitor discharges, effectively resetting the alarm and preparing the system for the next cycle. This design element contributes to the overall reliability of the device.
Operating at a mere 50 µA with a 3V battery, the circuit is highly efficient, allowing for extended use without frequent battery replacements. This low power consumption is particularly advantageous for a device intended for daily use, ensuring that users can rely on its functionality without the inconvenience of constant charging or battery changes. The combination of these elements creates a user-friendly and effective medication reminder system.This device is used as a reminder to take medicine every day. This device actually contains a crystal watch and a 4001 quad 2-input NOR gate with two of the gates (IC1a & IC1b) wired as an RS flipflop. The watch is set to tablet time , usually mornings, when an alarm is activated with a high signal fed via diode D1 which sets the RS flipflop and
enables the oscillator comprising gates IC1c & IC1d. This drives the LED with a 10% duty cycle. The 10nF capacitor resets the watch alarm when positive voltage appears on pin 3 of IC1. The circuit consumes only 50 µA with a 3V battery. 🔗 External reference
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