What is it?

My project is a Smart Butter Lamp case that will automatically play prayers when a sudden rise in temperature is sensed inside the case when a butter lamp is placed. It will also have a LCD display screen to be able to display a burn timer or if needed it will also display the temperature inside the case. For storing the burn timer for conveinience. My butter lamp case has 4 buttons, One identified as "Store" that will be clicked before recording the burn time in Buttons identified as "A,B, and C"

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Concept mapping

1. How are you going to determine the burning time of a lamp based on its size.

  • When the store button is pressed, the program enters a listening state, waiting for a button press event from buttons A, B, or C. Upon button press detection, the button will start recording until the butter lamp has completed burning. Which means that when bigger butter lamp sizes are placed the time recorded will be for a longer duration and smaller butter lamp sizes will have shorter burn duration. The store button will be pressed when you first place a lamp and the timer will be stopped when you exchange your buttter lamp.

    2. How are you going to use the NTC Thermistor module and where can you buy one?

    I was planning on using the NTC thermistor module as a temperature sensor and to trigger the sound module and sound box. Since the thermistor is able to detect temperature ranging from -44-+200 degree celsius, it will be perfect for my project which needs a sensor that can detect differences in temperature before and after putting the lamp in the glass block enclosure. I will then display the temperature in the LCD screen along with r=the timer. When a strike in temperature is sensed after adding the butter lamp in, I want the NTC thermistor module to send trigger to the sound module to start playing the pre-recorded prayers.

    I was planning on purcahsing a NTC Thermistor module from Amazon

    3. Detail out the Components. List your specific component suggestion.

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  • Detailed information(Datasheet) on Microcontroller: ATtiny44
  • This is the circuit diagram of the Attiny44(Board)
    Opearting voltage : 2.7-5.5
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  • Buttons
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  • LCD
    Operating voltage : 5 V
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  • NTC20D-9 Thermistor
    -40-+200 degree celsuis
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  • ISD1820 Voice Recorder and player
    Operating Voltage: DC 3V-5V.
  • This is how to use and the pinout details of ISD1820(I will not be using it anymore)

    • Where will the prayers be stored (storage device?).

    In the design of the Smart, the prayers will be stored in a sound module. The sound module is a type of electronic device that can store and play audio recordings.It includes memory storage where audio files, in this case, the prayers, are stored digitally. When activated, the sound module plays the stored audio through a speaker.The prayers for the butter lamp will be stored in the memory of the sound module within the overall design. When the system is triggered, the sound module retrieves and plays the pre-recorded prayers. The sound module will be triggered by the NTC Thermistor module, to play the prayers, When the NTC experiencing a strike in the temperature, it will trigger the sound .

    When the store button is pressed, the program enters a listening state, waiting for a button press event from buttons A, B, or C. Upon button press detection, the program shifts to listening for a trigger event from the NTC Thermistor module, sensing a strike in the temperature because of the butter lamp placed..

    Once heat is detected,The sound module is triggered to play the already recorded prayer, alsostarting a timer to record lamp burning duration when the prayers are played and a strike of temperature is experienced. The timer stops when the NTC ceases to send a signal, indicating the lamp's burnout.Recorded time is then temporarily saved on the circuit board and can be overwritten bypressing the store button and pressing the corresponding key, corresponding to the specific button pressed (e.g., button A).

    Who it is going to help?

    The Smart Butter Lamp, designed for Buddhist monks and households, seamlessly blends tradition with modern technology to enhance spiritual practices. In this innovative device, a 9V battery powers a motor for spinning the prayer wheel and plays prayers through the sound module when users are away. Meanwhile, the thermoelectric generator (TEG) takes on a dual role: primarily recharging the 9V battery and functioning as a heat detector. This unique design ensures continuous operation without relying solely on the TEG as the primary power source. The inclusion of a switch allows users to set and monitor the expected duration of the butter lamp, providing a sense of when it will finish burning. The Smart Butter Lamp stands as a purposeful creation, supporting daily rituals and spiritual moments with efficiency and convenience.

    Component Inventory
    Component Inventory(not the final, scroll down for the finalized list)
    NTC Thermistor module 1 NTC Thermistor module
    ISD1820 Voice recording module with sound box 1 ISD1820
    LCD display screen with I2C module 1 LCD display screen
    Button 4 Button
    ATtiny44 1