Latest Simple Electronic Projects for Beginners in 2016

This article is a collection of simple electronic projects that are helpful for the beginners. During practice, implementation of simple electronic projects helps to deal with complex circuits.

Therefore, we recommend beginners to start these projects as these are capable of working for them on their first attempt itself. Before proceeding with these projects the beginners should know how to use a breadboard and basic Components used in Electronics.

Electronic Projects for Beginners
Electronic Projects for Beginners

1. FM Transmitter

FM Transmitter allows you to send as well as receive any external audio source played through MIC with FM (frequency modulator) band. It is also called as RF (Radio Frequency) modulator or FM modulator.

When the audio from portable audio devices like iPod, phone, mp3 player, CD player is connected to the FM Transmitter, then the sound from the audio device is broadcasted through the transmitter as an FM station. This is then picked up on your car radio or other FM receivers when the tuner is tuned to transmitted FM band or frequency.

This is the first stage wherein the converter converts the external audio source output to frequency signals. In the second stage the modulation of the audio signal takes place by using FM Modulation circuit. This FM modulated signal is then laid on to a Radio frequency transmitter. So, by tuning the FM receiver or local FM devices one can hear the audio that is actually sent by the transmitter.

The Required components for this project include

  • Q1 transistor-BC547
  • Capacitor-4.7pF,20pF,0.001uF(has code 102),22nF(has code for 223)
  • Variable Capacitor VC1
  • Resistors-4.7 kilo ohm,3300 ohm
  • Condenser/electrets microphone
  • Inductor-0.1uF
  • 6-7 turns using 26 SWG wire/0.1uH inductor
  • Antenna -5cm to 1meter long wire for antenna
  • 9V Battery

The schematic of FM transmitter

FM Transmitter Circuit
FM Transmitter Circuit

This circuit is used to transmit noise-free FM signal up to 100meters by using one transistor. The transmitted message from the FM transmitter is then received by the FM receiver passing through three stages: oscillator, modulator, and amplifier stages.

By adjusting voltage controlled oscillator: VC1, the transmitting frequency of 88-108MHZ is generated. The input voice given to the microphone is changed into an electric signal and is then given to base of the transistor T1. The oscillated frequency depends upon the values of R2, C2, L2, and L3. The transmitted signal from the FM transmitter is received and tuned by the FM receiver.

2. RAIN ALARM

This circuit alerts the user when it’s going to rain. This is helpful for the home maids to protect their washed cloths and other material and things that are vulnerable to rain when they remain inside the home most of the time for their work.

Components Required

  • Probes
  • Resistors 330K, 10K
  • Transistors BC 548, BC 558
  • Speaker
  • Battery 3V
  • Capacitor .01mf

The circuit diagram of the rain alarm is shown below.

Rain Alarm Circuit
Rain Alarm Circuit

The rain alarm begins to work and becomes operational when rain water comes in contact with the probe, and once this happens; there is a flow of current through it, which enables the transistor Q1 that is NPN transistor. Conduction of the Q1 makes Q2 become active which is a PNP transistor.

Subsequently the Q2 transistor conducts and the current flows through the speaker and the speaker alarms. Until the probe is in contact with the water, this process repeats again and again. In this system, the oscillation circuit changes the vibration frequency, and thus changes the tone.

Applications:

The rain alarm system is used for

  • Irrigation purposes
  • Increasing the signal strength in antennas
  • Industrial purpose

3. Flashing Lamps Using 555 Timer

The basic idea here is to vary the intensity of the lamps at a frequency of one minute interval, and to achieve this, we have to provide oscillating input to the switch or the relay that drives the lamps.

  • R1(Potentiometer)-1KOhms
  • R2-500Ohms
  • C1-1uF
  • C2-0.01uF
  • Diode-IN4003
  • Timer-555 IC
  • 4 Lamps-120V, 100W
  • Relay-EMR131B12

In this system, a 555 timer is used as an oscillator that is capable of generating pulses at a maximum of 10 minutes time interval. The frequency of this time interval can be adjusted by using the variable resistor connected between the discharge pin 7 and the Vcc pin 8 of the timer IC. The other resistor value is set at 1K, and the capacitor between the pin 6 and pin 1 is set at 1uF.

Flashing Lamps Using 555 Timer
Flashing Lamps Using 555 Timer

The output of the timer at pin 3 is given to the parallel combination of a diode and the relay. The system uses a normally closed contact relay. The system uses 4 lamps: two of which are connected in series, and the other two pair of series lamps are connected in parallel to each other. A DPST switch is used to control the switching of each pair of lamps.

When this circuit receives a power supply of 9V (It can be 12 or 15V as well), the timer 555 generates oscillations at its output. The diode at the output is used for protection. When the relay coil gets pulses, it gets energized.

The common contact of the DPST switch is connected in such a way that the upper pair of lamps receives the supply of 230 V AC. As the switching operation of the relay varies due to oscillations, the intensity of the lamps also varies and they appear flashing. The same operation occurs for the other pair of lamps as well.

These are the three basic electronic projects for beginners to make them to learn about the components’ working and the way of implementing the projects. If you have any doubts regarding these projects or any other information regarding latest projects and their implementation, you can comment in the comments section given below.

Photo Credits

16 Comments

  1. Ajay Katariya says:

    Thanku very much for providing us to ,
    A valuable advice and guidance to make project in easy way,,,
    I really like this???

  2. Chachameow says:

    Hello sir, May I ask about the RAIN ALARM PROJECT, instead using of speaker can we use buzzer? And about the probe, whats the specific name of it? What should we name in when buying in the electrical shop? Thanks

  3. Logapriya says:

    Hi sir, I have to do a project based on only resistors, capacitors and inductors.. Can you pls suggest me…

  4. It is very useful for me.thanks

    1. Hi Divya, Thank you for your appreciation. Also, please check the user friendly website http://www.edgefxkits.com for project ideas on all the latest technologies. You can download project abstract and seminar presentation also from the website. Please check the website for complete details in the kit content section: http://www.edgefxkits.com/kitdetails/ and go through the FAQ: http://www.edgefxkits.com/contact-us/#faq. Further if you have any queries you can call us on the toll free no. 1800 108 7475 for clarifications/personal counseling. Niveditha (Mobile: +91 9959178000)

  5. Radu Postolache says:

    For the FM transmitter, how do you have a capacitor with multiple capacitances?
    It says: Capacitor-4.7pF,20pF,0.001uF(has code 102)

    1. Hello, Click the links below for help:
      http://www.edgefxkits.com/long-range-fm-transmitter-with-audio-modulation
      http://www.edgefxkits.com/wireless-audio-transmitter-for-tv
      Please check the user friendly website http://www.edgefxkits.com for complete details in the kit content section: http://www.edgefxkits.com/kitdetails/ and go through the FAQ: http://www.edgefxkits.com/contact-us/#faq for details.Further if you have any queries you can call us on the toll free no. 1800 108 7475 for clarifications/personal counseling. Raji (Mobile: +91 9959178000)

  6. thank you very much to giving like this….its very useful to us… we need it…we expand it..

    1. Team Elprocus says:

      Hi Aravindh,

      Thanks for your appreciation.

  7. i get some idea.. when sea this project.. thank u

    1. Team Elprocus says:

      Hi Karthika,

      Please check our new wonderful and user friendly website http://www.edgefxkits.com for all the details.

      Please get back to us at info@edgefxkits.in or call the undersigned on 0 99591 78000 or our toll free no. 1800 108 7475 for clarifications/personal counseling.

  8. Nice information but I want some other projects for water lever detector

    1. Team Elprocus says:

      Hi Naveen,

      Please check our new wonderful and user friendly website http://www.edgefxkits.com for all the details.

      Please get back to us at info@edgefxkits.in or call the undersigned on 0 99591 78000 or our toll free no. 1800 108 7475 for clarifications/personal counseling.

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