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AVR

The AVR is a customized Harvard configuration 8-bit RISC single-chip microcontroller, that had been engineered by Atmel in 1996. The AVR was one of the primary microcontroller families to apply on-chip flash memory for program storage, unlike one-time programmable ROM, EPROM, or EEPROM popular among other microcontrollers back then.

The AVR configuration was designed by two learners at the Norwegian Institute of Technology (NTH), Alf-Egil Bogen and Vegard Wollan.

The first AVR MCU was introduced at a inner city ASIC house in Trondheim, Norway, named Nordic VLSI back then, today Nordic Semiconductor, the place Bogen and Wollan were employed as pupils. At that time called a μRISC (Micro RISC) and was obtainable in the form of silicon IP/building board from Nordic VLSI. Once the technological innovation was marketed to Atmel from Nordic VLSI, the in-built structure was more deeply constructed by Bogen and Wollan at Atmel Norway, a subsidiary of Atmel. The developers toiled thoroughly with compiler authors at IAR Systems with the intention that the data set offered more powerful system of high-level languages. Atmel emphasizes that the designation AVR is not an acronym and may not represent something on specific. The researchers of the AVR furnish no conclusive reply to about exactly what the expression "AVR" would mean. Even so, it happens to be typically acknowledged that AVR symbolizes Alf (Egil Bogen) and Vegard (Wollan)'s RISC processor. Take notice the application "AVR" on this page in general describes the 8-bit RISC selection of Atmel AVR Microcontrollers.

Among the foremost of the AVR series was the AT90S8515, which in a 40-pin DIP package carries the matching pinout as an 8051 microcontroller, as well as the superficial multiplexed address and data bus. The polarity of the RESET line was flip sided (8051's containing an active-high RESET, whereas the AVR includes an active-low RESET), but nevertheless aside from that the pinout was all most same.

The AVR 8-bit microcontroller structural design was launched in 1997. By 2003, Atmel had gotten transported 500 million AVR flash microcontrollers to date

In this website you will find a few handpicked best online tutorial articles regarding AVR which could be referred by all the new microcontroller hobbyists desperately seeking to learn AVR from the beginning and quickly without going through much comprehensive time consuming data.

Here are the specific tutorial links you would want to refer for learning AVR quickly.







36 comments:

  1. PLease Sir, I am very new to your site but i took over three hours to see how people thank you for your assistance in different form. I need your help too in how to design 3000 watts transformer-less inverter with full functionality. also how to calculate to rate the inverter wattage, thank you Sir in anticipation

    ReplyDelete
    Replies
    1. Oladimeji, I don't have adequate information regarding transformerless inverter designs, so I'm sorry I won't be able to help you with it.

      Delete
    2. By 'Transformer less' he means, most probably, 'Ferrite based' transformer. A power supply working as S. M. P. S.
      Of course that is not 'transformer less' but much less of it.

      Delete
  2. Hello Swagatam!
    I would really appreciate your interest being hired by me if you are interested in any one of these projects, please inform me ASAP at mjasoj@gmail.com if you are interested and just make a text Message to me at +923052009500 whenever you'll send your response. Thanks in Advance!
    Pure Sine Wave UPS (With or Without MicroController)
    Switch Mode Power Supply Based UPS

    ReplyDelete
    Replies
    1. Hello Muhammad,

      Thank you for your kind proposal, however developing a sine wave inverter could be a long and costly procedure and require many meetings and discussions, this would be possible only if your are situated in Mumbai.
      If you are in Mumbai then probably we could plan it out appropriately.
      Kindly let me know your thoughts on this

      Delete
  3. Hello Swagatam,
    Thanks for your quick and kind response as I get always..!
    Sorry to say that I am not from India and I don't require complete hardware from you, I just want you to help me out providing required circuit diagrams and help out troubleshooting during the time i'll be working on hardware (Through Skype or Mobile Phone) and i'll pay according to your requirements.
    And also please figure out whether you can help me to make Switch Mode Power Supply UPS or not..?

    ReplyDelete
    Replies
    1. Hello Muhammed,

      Making an electronic project as complicated as a sine wave invereter cannot be implemented thoroughly and successfully until it's done under one roof and by communicating side by side.
      So I am sorry the idea that you have suggested is not practically feasible and could result in unnecessary loss of money for you.

      I have a few sine wave circuits in my blog arbitrarily designed by me, you can try them out just to see if it works satisfactorily or not.

      Delete
  4. Hi Swagatam,

    Do u provide consultancy for Inverter based Welding machine.

    ReplyDelete
    Replies
    1. Hi Nishant,

      sorry, I cannot provide consultancy, presently I only prefer R and D jobs and production.

      Delete
  5. Hi Swagatam Majumdar
    can you guide me calcula a ferrit core transformer?

    ReplyDelete
  6. Hi Swagtam Mujumdar
    can you guide me for destroy display of digital energy meter by a circuit which produces a very large frequency

    ReplyDelete
  7. I need a minimal RF tx/rx for a condenser microphone. Operates on a button battery for Tx, but Rx is powered by car battery, 12 V.
    Ed Davis or ed@edsets.com

    ReplyDelete
    Replies
    1. you can try the one that's given in the following link:

      http://homemadecircuitsandschematics.blogspot.in/2011/12/fm-wireless-microphone-circuit-design.html

      Delete
  8. Sir I am intreasted to make amplifier I want to know about its basic also send me a circuit of two transister amp with functioning of all components thankyou sir

    ReplyDelete
  9. Hello Sir,I have read many of your articles and have started to consider you as my 'electronics idol'. I have ultimate love for electronics and embedded programming but unlike you I don't have so much knowledge. My programming skills have always remain a weapon as compared to electronics. I want to pursue a master course but I don't know what kind of specialization I should prefer so that I can use my programming skills

    ReplyDelete
    Replies
    1. Hello Jimit,

      thanks! this will need to be researched online, you can easily Google it and see what exactly fits as per your requirements.

      Delete
  10. Hola k buen blog tienes: felicitaciones lo sigo y me gusat quisiera saber si puedes ayudarme con un inversor onda seno pura y puente H necesito prender un motor para un aire acondicionado ya k con el inversor senomodificado no he podido

    gracias

    ReplyDelete
  11. Hi Swagatam, Your circuit and explanation is awesome. keep up ur good work.

    I would like to design a dc to dc converter, could you please help me to design one for my requirement.
    12 v 7.5 Amp DC to 5 v 7.5 Amp DC, is this possible? if possible could you please help me to design a circuit. please provide me your inputs thank you.

    ReplyDelete
    Replies
    1. Thanks Kishore,

      You could try the buck converter circuit shown in the following link:

      http://homemadecircuitsandschematics.blogspot.in/2014/06/solar-panel-buck-converter-circuit-with.html

      The mosfet could be replaced with a TIP127 if you find the mosfet to be costlier.

      Delete
    2. Thank you so much for the reply Swagatam :)

      I will check this and let u know if i have any questions...

      Delete
  12. i am karthick from chennai. i am doing EIE first year
    i need drive circuit for 100w led [Volts 32V DC to 35V DC,
    Current Approx 3500mAh] from 230v ac supply.
    i want two seperate drive circuits by using transformer and transformerless
    please i will be happy when playing games in outdoor shuttle
    my gmail id is b.karthickmuthurajan@gmail.com

    ReplyDelete
    Replies
    1. For a transformer power supply you'll have to procure a 0-24V 5 amp transformer, rectify its output using a bridge rectifier stage and a 2200uF/50V capacitor, you'll also have to add a current limiter stage with the LEd as shown in the following article (first diagram)

      http://homemadecircuitsandschematics.blogspot.in/2013/06/universal-high-watt-led-current-limiter.html

      use a LM338 IC in it instead of the shown LM117.

      A Transformerless power supply could be difficult for you to make, instead you can buy a ready made SMPS rated at 32V/3amps and use a LM338 circuit in similar manner as suggested above.

      Delete
    2. sorry to ask you again because Transformerless power supply could be cheaper for me to make, instead of buying a ready made SMPS or using transformer power supply

      Delete
    3. You can try the following circuit:

      http://homemadecircuitsandschematics.blogspot.in/2014/03/12v-5-amp-transformerless-battery.html

      You'll have to increase the secondary turns proportionately until 32V is achieved, the associated zener diode will also need to be upgraded to 32V.

      Delete
  13. the circuit is complex and i need somewhat simple one with all safety

    ReplyDelete
    Replies
    1. for a 32V/3amp LED you'll have to go for an SMPS circuit other forms will not work

      Delete
  14. hello, I am Jain here from Techno Micro Systems . Located in Mumbai. Need consultancy for 8 Channel RF Transmitter receiver Circuit.

    ReplyDelete
  15. i need consultancy for 8 channel RF Remote Transmitter Receiver. How can we go about it ???i am located in Mumbai only.

    ReplyDelete
    Replies
    1. Hi, you can refer to the following article, it details a 4 channel Rf device, the connections would be quite identical for a 8 channel RF module also:

      http://homemadecircuitsandschematics.blogspot.in/2013/07/simple-100-meter-rf-module-remote.html

      Delete
  16. Hi Swagatam,
    I have been looking everywhere and yet my request is simple i want to built a timer 5min interval (5 on/5off) that will start a relay 12v to 120v a will go indefinitely until i remove power from this circuit
    Can you help me?

    ReplyDelete
    Replies
    1. Hi Pat,

      you can try the following circuit:

      http://homemadecircuitsandschematics.blogspot.in/2012/01/how-to-make-simple-versatile-timer.html

      replace the buzzer and connect pin3 of the IC with a relay driver stage as explained here:

      http://homemadecircuitsandschematics.blogspot.in/2012/01/how-to-make-relay-driver-stage-in.html

      Delete
  17. Hi Mr Swagatam, I have a UPS that I want to use as inverter by upgrading the battery 🔋 to a car battery rating 12volts. Is there any adjustments I need to make in the inverter for the power supply to last long. Thank you for your reply in advance.

    ReplyDelete
    Replies
    1. Hi Iykmoses, if your UPS is also rated to work with 12V then you can directly use your car battery to operate it as an inverter, no additional modification would be required.

      Delete

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