Enhance Your Home: 8025AC Clock Upgrade

If there Building upon the previous discussion concerning the modification of our first LED-equipped clock and the non-LED counterpart, we now embark on the journey of retrofitting an 8025AC electronic clock that operates on a 1.5V power supply.

In essence, this device combines the functionality of a clock with that of a thermometer and humidity sensor. However, it is pertinent to note that the humidity readings may not be entirely precise due to a potential malfunction in the humidity-sensitive resistor.

The power source for this device is a single AAA battery.

Regarding the humidity-sensitive resistor, it is important to highlight the simplicity of this board when compared to the two electronic clocks discussed earlier. 

The temperature-sensitive resistor has been extended with a wire, allowing it to be positioned externally on the electronic clock. During the winter season, this setup facilitates the monitoring of water temperature when affixed to a heating pipe.

The original crystal oscillator frequency from the manufacturer is poised to be substituted with the 8025AC.

Now, let's delve into the specifics of the 8025AC frequency.

The connection should be established at the most recessed point within the rear casing.

With the completion of this project, we can move on to evaluating the operating current of the 8025 under diverse voltage conditions.

Sample 1 of the 8025T, powered by 3V, consumes 1.2uA.

Sample 1 of the 8025T, powered by 5V, consumes 1.6uA.

Sample 2 of the 8025T, powered by 3V, consumes 9.5uA.

While the 5V supply elevates the current consumption to 34.5uA. 

These empirical tests emphasize that higher input voltages lead to an increase in the 8025's operating current, and it is worth noting that there may be variance in the current between different manufacturers or production batches.

To culminate, we present an illustrative depiction of our accomplishments. Over the span of three days, these clocks have undergone rigorous testing, with no errors exceeding 1 second being detected. Their accuracy is indeed remarkable.