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  1. #31
    In The Zone Mr.Kickass's Avatar
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    Default re: the Open Source hardware thread

    Quote Originally Posted by icebags View Post
    ^ interesting. but where to find a beaglebone black at suitable price ? saw one @ ebay @4.5k but is that a proper price ? raspberry seems a bit cheaper.
    Is this of any help ?


    Besides, I'd prefer the BeagleBone

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  2. #32
    Wise Old Owl icebags's Avatar
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    Default re: the Open Source hardware thread

    Quote Originally Posted by quagmire View Post
    I bought an Atmega32 (40pin) for 190/- from SP Road, Bangalore.. Why did you pay so much for Atmega328?
    Since you have a Atmega8 you can take a look at this : USBASP. Programmer for AVR uC..
    I made the same a few days ago. Both on a perfboard and PCB . Works perfectly fine. (Better than max232 types..)
    i asked local shops for 328, they were saying ~300, so just thought of buying one with bootloader at some extra price, to escape the process of bootloading for the first time.

    saw that usbasp link too, did not read details yet, but i would like to ask, how u loaded the usbasp firmware onto that atmega8 ? having an usbasp is a good idea, i read it can program sketches directly to chips, saving the bootloader space - good for standalone projects with atmega8s.
    i am trying to use max232 for direct serial interfacing, for realtime arduino access, is it possible with usbasp ?

    Quote Originally Posted by Mr.Kickass View Post
    thinking of making a query to borderless electronics if they are enthuciastic about launching a similar campain for beaglebone like they did with arduino. anyways, i will play with arduino for a while now.

    Quote Originally Posted by gopi_vbboy View Post
    Started reading operating systems by william stalling..intresting till now.

    Planning to buy beglebone or pi soon
    i have 0 beaglebone specific knowledge, only saw a few codes where they were using shell scripts to read/write data to pins, it appeared kinda similar to file programming to me. may be kickass will be able to help.

    but this will probably be a good watch for u.

    Luck goes through an AND gate.

  3. #33
    Allllright ! quagmire's Avatar
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    Default re: the Open Source hardware thread

    Quote Originally Posted by icebags View Post
    i asked local shops for 328, they were saying ~300, so just thought of buying one with bootloader at some extra price, to escape the process of bootloading for the first time.

    saw that usbasp link too, did not read details yet, but i would like to ask, how u loaded the usbasp firmware onto that atmega8 ? having an usbasp is a good idea, i read it can program sketches directly to chips, saving the bootloader space - good for standalone projects with atmega8s.
    i am trying to use max232 for direct serial interfacing, for realtime arduino access, is it possible with usbasp ?



    thinking of making a query to borderless electronics if they are enthuciastic about launching a similar campain for beaglebone like they did with arduino. anyways, i will play with arduino for a while now.
    1.I have an Arduino Uno. I used it as a ISP (alongwith avrdude) and uploaded the firmware from the website.
    2. Yes, you can simply connect MISO, MOSI, SCLK, VCC, GND from USBasp to target board and upload the hex file.
    3. I am not sure. Also a disadvantage is that it is not supported by Atmel Studio, which gives you great tools for debugging..
    4. Exactly. I'm dying to get my hands on a BeagleBone, but here the price from a authorised distributor is 4k
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  4. #34
    In The Zone Mr.Kickass's Avatar
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    Default re: the Open Source hardware thread

    Quote Originally Posted by quagmire View Post
    4. Exactly. I'm dying to get my hands on a BeagleBone, but here the price from a authorised distributor is 4k
    Get the new BeagleBone Black. It's cheaper than the 4K one



    Quote Originally Posted by gopi_vbboy View Post
    hi to @Kickass, @Icebags, @Quagmire and all

    Started reading operating systems by william stalling..intresting till now.
    Yep. That's the standard text. The very foundation


    Quote Originally Posted by gopi_vbboy View Post
    Have a few questions on beagleboard
    ^Beagleboard experts please...

    IMO, you can ask in their forums as I'm sure they must be having an answer to that. And I'm yet to get a Beaglebone Black
    Last edited by Mr.Kickass; 17-09-2013 at 01:43 AM.
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  5. #35
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    Default re: the Open Source hardware thread

    ok

  6. #36
    Wise Old Owl icebags's Avatar
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    Default re: the Open Source hardware thread

    ^yes, please enlighten us with the overseas forum knowledge once in a while here.
    Luck goes through an AND gate.

  7. #37
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    Default re: the Open Source hardware thread

    Hey guys just a query..45$ Beaglebone black is Rs 4490. .Do you think its a good deal? .. Is this imported or local manufactured?
    BeagleBone Black. A Competitor to Raspberry Pi | eBay

  8. #38
    Alpha Geek TheHumanBot's Avatar
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    Default re: the Open Source hardware thread

    :lol:

  9. #39
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  10. #40
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    Default re: the Open Source hardware thread

    few months back BeagleBone Black was 3.5k in element14.
    now with 4.5k this sucks for amateur like me.
    G6-2313AX -- Arduino R3 UNO -- STM32 Value Discovery -- Pantech Burst -- SBS A335
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  11. #41
    Simply a DIGITian krishnandu.sarkar's Avatar
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    Default re: the Open Source hardware thread

    What are the chances of damaging the board (Pi and Arduino) if I do the circuit wrong? Asking this, as I'm a newbie to electronics and if I mistakenly do anything wrong and power it up.
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  12. #42
    Human Spambot amjath's Avatar
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    Default re: the Open Source hardware thread

    Quote Originally Posted by krishnandu.sarkar View Post
    What are the chances of damaging the board (Pi and Arduino) if I do the circuit wrong? Asking this, as I'm a newbie to electronics and if I mistakenly do anything wrong and power it up.
    When i connect my components doing electronics projects, i end up burning IC's. So I suggest you to read the link and use the fix befoer doing anything wrong
    10 Ways to Destroy an Arduino : Application Note ANCP01

    PS: I even burnt a solar panel [small one for a project] when trying to charge a battery, from then i came to know why exactly Diode is used

  13. #43
    Simply a DIGITian krishnandu.sarkar's Avatar
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    Default re: the Open Source hardware thread

    Quote Originally Posted by amjath View Post
    When i connect my components doing electronics projects, i end up burning IC's. So I suggest you to read the link and use the fix befoer doing anything wrong
    10 Ways to Destroy an Arduino : Application Note ANCP01

    PS: I even burnt a solar panel [small one for a project] when trying to charge a battery, from then i came to know why exactly Diode is used
    Thanks a lot

    I thought I read, somewhere, that Arduino and Pi is built like that way, if I do anything wrong, current won't pass backwards. I guess it was wrong.
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  14. #44
    Alpha Geek TheHumanBot's Avatar
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    Default re: the Open Source hardware thread

    last day i was also going through some video tutorials and noticed too much electronics things going on and wonder the same thing what are the chances that it will give me electric shock? if i messed up anything the whole board will go kaput but then i also watched their documentry on how they got started and everything and it seems that its build that way that beginners can hardly blew it up if they mess up while doing something.

    just 1 thing that do not connect usb cable while your doing programming when you done connect the cable and run your codes.
    :lol:

  15. #45
    Wise Old Owl icebags's Avatar
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    Default re: the Open Source hardware thread

    ^get a main cord and put the wire ends into pi holes. make the switch on and see if it blows up or not ?


    (for personal security, please don't forget to wear safety goggles and position urself atleast 10mts away while trying the above experiment with ur favourite pi board.)
    Luck goes through an AND gate.

  16. #46

  17. #47
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    Default re: the Open Source hardware thread

    My 7 segment display from 0 to 9 using stm32 discovery.

    IMG_20130930_000031.jpg
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  18. #48
    Wise Old Owl icebags's Avatar
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    Default re: the Open Source hardware thread

    pic not showing, share it via image hosting site ?
    Luck goes through an AND gate.

  19. #49
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    Default re: the Open Source hardware thread

    ^ Here
    Picture is little dark.

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  20. #50
    Wise Old Owl icebags's Avatar
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    Default re: the Open Source hardware thread

    ^good. so, it does count from 0 to 9 ?

    and educate us a bit about stm32 board, how to use it and where to get it from ?
    Luck goes through an AND gate.

  21. #51
    In The Zone Mr.Kickass's Avatar
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    Default re: the Open Source hardware thread

    Oh man this is great news

    Arduino Announces new Boards and Collaboration with Intel and T.I.

    A sneak preview of Arduino TRE powered by Texas Instruments


    One cannot even begin to imagine the magnitude of awe and amusement that is caused by this kind of collaboration. Back in the day it was really impossible to learn about x86 without going through a few hoops because the hardware just wasn't available. The only x86 machine popular was the Windows machine(practically every PC) but the problem was that develompent wasn't as slick as Arduino or Beaglebone.

    But this is.... just wow. An excellent platform for anyone interested in learning to code an x86(the Intel Galileo) or an ARM based machine(Arduino TRE)

    Now this goes without saying, I never ever ever, put a random link off the web. So these are the standard forums where you get highly detailed answers to even simple questions. Now, digit people are the best guys around so everybody knows AnandTech but for the uninformed there is this electronics hobbyist site called adafruit created by a person known by the pseudonym Ladyada having quite a history. The company is known as the Adafruit industries. So, the links...

    Intel Announces Galileo: Quark Based Arduino Compatible Developer Board
    (Sorry for the jargon heavy post but that is AnandTech for you )

    BREAKING NEWS – There is now an Intel based Arduino – Galileo
    (News from Adafruit)
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  22. #52
    Simply a DIGITian krishnandu.sarkar's Avatar
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    Default re: the Open Source hardware thread

    Wow..!! That's really great

    I must learn basics as fast as possible. Hope I can utilize the festive season holiday coming
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  23. #53
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    Default re: the Open Source hardware thread

    Quote Originally Posted by krishnandu.sarkar View Post
    Wow..!! That's really great

    I must learn basics as fast as possible. Hope I can utilize the festive season holiday coming
    This => Tutorial 14 for Arduino: Holiday Lights and Sounds Spectacular! - YouTube
    :lol:

  24. #54
    Wise Old Owl icebags's Avatar
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    Default re: the Open Source hardware thread

    ^ arduino holiday guide, lol.
    Luck goes through an AND gate.

  25. #55
    Simply a DIGITian krishnandu.sarkar's Avatar
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    Default re: the Open Source hardware thread

    Thanks a lot I'll surely go through those series and the ones posted above on this holiday

    Any specific site you would like to recommend for learning electronics basics? Though I'm doing that by googling around, managed to learn how breadboard is designed internally, which helped me understand how can I connect components and all. Need to know more and more

    Came to know basic things of basic components like Resistors, Capacitors, Diode and all

    You see, I'm still struggling on basic electronics as I'm not from that background
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  26. #56
    Alpha Geek TheHumanBot's Avatar
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    Default re: the Open Source hardware thread

    ^ that guy has covered some of the basic electronics which you will need to understand his tutorials.

    IF i get my diwali bonus early then i will build that thing for sure.
    :lol:

  27. #57
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    Default re: the Open Source hardware thread

    @all
    Buy BeagleBone Black from here - http://tenettech.com/product/2912/beaglebone-black (not available at the moment)

    ^^ this site is good.
    Quote Originally Posted by gopi_vbboy View Post
    1.Is Uboot/Any bootloader the only thing used to initialize the hardware in board?
    Can we initialize hardware later in kernel space from linux?
    Do we have to initialize them again from user space though drivers written inorder to use them?
    U-Boot's job is simply that of a desktop computer bootloader. Load an operating system.

    Beaglebone, Raspberry Pi, Pandaboard etc are essentially computers. A secondary media needs to have an operating system.

    You use a SD Card flash an operating system on it. U-Boot's job is to boot that. Get the kernel running in the memory, mount devices as filesystems etc.

    Quote Originally Posted by gopi_vbboy View Post
    2.I am just confused how hardware pins maps to registers and peripherals are initialized?
    Are they done in user space or driver or bootloader?
    When i compare with microcontroller i get confused.In microcntroller we only have a C language
    code with infinite while(1){} loop.Before that Oscillators ,Ports ,peripherals are initialized.
    Howz that done by Beagleboard and at what stage?
    In Linux, you can mess around with the hardware by editing simple text files.

    The /sys folder in the filesystem contains these files. So, you can use a program in any language like Python, C etc to edit the content of those files and do the desired task.

    Quote Originally Posted by gopi_vbboy View Post
    3.How does processor know that our Uboot binary is at particular SPI flash?
    I mean how is the processor configured/initialized before loading boot-loader to ram i.e the moment we power on?
    Embedded Linux platforms like Beaglebone, Raspberry Pi etc are NOT microcontrollers. They are like your normal desktop computers.

    You're confusing them with something like Arduino. The 'bootloader' when we talk about Arduino is different and works differently. U-boot is more like the bootloader you see on desktop computers.

    In embedded Linux platforms, everything will happen after the operating system boots. Just like it is with your computer.

    Quote Originally Posted by gopi_vbboy View Post
    4.Why do we have some co processor in beaglebone?Is it to program the SPI flash though Serial/USB?
    This will tell you more - BeagleBone Black: BBB - Working with the PRU-ICSS/PRUSSv2 - element14

  28. #58
    In The Zone Mr.Kickass's Avatar
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    Default Re: the Open Source hardware thread

    Quote Originally Posted by krishnandu.sarkar View Post
    Any specific site you would like to recommend for learning electronics basics? Though I'm doing that by googling around, managed to learn how breadboard is designed internally, which helped me understand how can I connect components and all. Need to know more and more

    Came to know basic things of basic components like Resistors, Capacitors, Diode and all

    You see, I'm still struggling on basic electronics as I'm not from that background
    Oh c'mon, I already wrote such a huge post pointing you to the resources(with the links). We even had a conversation in this thread and you forgot all about that ? I'll re-post all that minus the description.

    All About Circuits
    Basic Electronics Tutorials
    edaboard(Not a tutorial but a forum where you can always ask for help when buidling a circuit and btw they really DO help)

    Spoiler:
    Now, this has got NOTHING to do with your query but this is so awesome that I just couldn't help but mention it anyway
    letsmakerobots(If you want to make a robot then you should definitely visit this)

    Finally, the obvious...

    Jeremy Blum's Arduino Tutorial(Both TheHumanBot and quagmire mentioned it sometime ago)



    EDIT: Now that you've learnt about breadboards its about time you started building some simple circuits to get a hang of it so that you can move on to the next level
    Last edited by Mr.Kickass; 05-10-2013 at 06:47 PM.
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  29. #59
    Wise Old Owl icebags's Avatar
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    Default Re: the Open Source hardware thread

    Quote Originally Posted by krishnandu.sarkar View Post
    You see, I'm still struggling on basic electronics as I'm not from that background
    go for kickass no.1 link : Volume I - DC : All About Circuits

    its as basic as possible.
    Luck goes through an AND gate.

  30. #60
    Simply a DIGITian krishnandu.sarkar's Avatar
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    Default Re: the Open Source hardware thread

    Thanks a lot to both of you

    No Mr.Kickass I didn't forget the discussions. But it's just the thing that after returning from office I don't get much time

    But now I'm determined, I'll do something. Thanks a lot again for all your help
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