In this project, the principle change that would be added to the alarm clock is voice recognition. Some of the other modifications would be a larger screen display, larger buttons, louder speakers
and a solar panel that would supply power to the alarm clock which would reduce the usage of ordinary batteries. The primary target audience are the visually impaired while everybody can
use it. This alarm clock would help the user know the time and weather and listen to the radio through their voice commands.
2. Introduction
Description of the product
17.5 x 10.7 x 5.8 cm (Dimensions)
181 g (Weight)
Corded power source
Power requirement: 100-240V AC
3. Introduction
Reasons for choosing this product
Great potential for improvement
Extremely high availability
Low cost
Possible business ventures
4. Introduction
How does it meet the criteria of the reverse engineering topic?
It is reversible
Useful for visionary disabilities as well as the population with hearing
difficulties
Contains a sufficient amount of components
5. Introduction
Goals for performing the reverse engineering study
Describe the background of the Digital Alarm Clock
Dissemble the product
Explain and describe each different component
Relate the suggested improvements to the theoretical explanation of the
components
6. Background
Product was initially derived from two inventions by D.E. Protzmann
and Josef Pallweber.
Satisfies the functional need to be alarmed at a specific time with
convenience
Targeted towards the majority of the population in specific the elderly
and those with disabilities in vision and hearing
The model at hand is CR1388B, Radio (AM/FM), LED display, Curved
edges for easier grip to be moved
24. Application details
(Digital display screen)
1. Oscillator
2. Crystal
3. The display screen is often made of a liquid crystal display (LCD) or light
emitting diode (LED).
27. Future work
Main idea- Voice recognition (take voice commands from the user and perform
tasks like changing time, weather update, play radio and more)
Other tweaks-
Bigger screen and simple larger buttons(convenient for near-blind people)
Louder speakers
Vibrating Wrist-band that connects to the alarm-clock via Wi-Fi (for deaf
people
Solar-energy panel (lessen the usage of batteries)
33. Distribution of tasks
Intro: Dylan
Background/Powerpoint: Ahmed
Evaluation Methods: Ramy
App details + Results: Sameh + Mahdi
Future works: Shivam
Marketing: Nicole
Resources: Everyone
References: Everyone
Proof reading, consistency and coordination: Mohammed
34. References
Churm, Thomas M. (September 26, 2010). “A Short History of Digital Clocks
and Watches.”
JosefPallweber.com.
Http://www.iec.ch/worldplugs/typeA.htm
(difference between current and voltage)
https://learn.sparkfun.com/tutorials/voltage-current-resistance-and-ohms-
law
http://www.explainthatstuff.com/howtransistorswork.html
This is the motherboard connected to the power board and the input circuit/keys circuit, we are going to explain how they work shortly. The motherboard processes signals and directs the power flow within the system. For example, when you set an alarm, you use the keys to make an input to the motherboard, the motherboard will give priority to the numbers you’re inputting and display them instead of time (so you will be able to see exactly what time you’re setting the alarm to), then when the alarm time is set, and the time comes, it allows the current to go to the speakers and then the speaker beeps for a number of times, if you click snooze, it stop for 5 minutes and so on. So the motherboard is the most intricate piece in the alarm clock.
there is a quartz crystal “oscillator”,figure 12, that, when electricity is inducted to it, it oscillates at a particular frequency and produces a voltage. And, so the signal the quartz crystal generates is an accurate 60 Hz (oscillations/sec). And, because of this accuracy, one could acquire of a very precise division of time. In order to use this signal to measure time, one needs to separate these divisions into minutes and hours . Thus, the signal is picked up by an Integrated Circuit (IC) that works as a divider/counter.
The counter serves to divide this frequency from 60 Hz per second to 1 Hz per second, and so we have accurate seconds that is also divided to have the minute counter and then divided again to create the hour counter.
