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21CommentsConstanţa, RomaniaJoined December 8th, 2008
toying around! :)
  • Component Tester - Test Almost Anything !!

    first thing after you finished this build is calibrating the tester.the procedure is described in manual: https://github.com/svn2github/transistortester/tre...so, looks like you don't calibrated the tool for caps...and as a side note, try to measure more than one electrolytic, because is a well-known issue about measuring these!and about your message: i'm sorry, but i became aware of this today! :(and, for some mysterious reasons, i wasn't able to read my own inbox until i relogged on instructables...anyway, i'm not familiar with pinouts of all modules, what i have is a bare rotary encoder, so, for my variant this part is different than of those who use arduino modules...

    sorry for delay, but looks like i'm not get notifications... :)the link: https://www.mikrocontroller.net/svnbrowser/transistortester/

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  • mistrije followed neelandan3 days ago
      • Gooseneck Light and Magnifier
      • Wireless L E D
      • 9V Battery Case for Projects
  • Infrared Remote and IR Receiver (TSOP1738) With Arduino

    if you constantly press any button of remote, you will get a line of "FFFFFFF"'s, and no codes.press shortly, and you will get the code, unless your remote is defective!or is an very old remote, ultrasonic type, not an infrared one! :D

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  • Small Variable Power Supply With Selectable Current Limiter

    ... oooook!i'm (very) sure someone here is tempted to made this power supply, but BRY39 is an old and obsolete part... maybe you can find some NOS on ebay... at "nice" prices (i already checked! :))but this part can be replaced with two ordinary BJT transistors, as in image.if someone already has a similar transformer in his/her junkbox, and a suitable meter, it's ok. :)

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  • mistrije commented on Mr innovative's instructable DIY MINI CNC DRAWING MACHINE2 months ago
    DIY MINI CNC DRAWING MACHINE

    github link: https://github.com/martymcguire/inkscape-unicornsimply, some unwanted characters added at link...link for inkscape: https://inkscape.org/and the link for extensions: https://inkscape.org/gallery/=extension/but looks like in version 0.92 gcodetools are already included in Inkscape, so... :)

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  • mistrije followed cookies, speakers, reuse, leds and 51 others channel 2 months ago
  • mistrije commented on Peter Balch's instructable Oscilloscope in a Matchbox - Arduino2 months ago
    Oscilloscope in a Matchbox - Arduino

    i was meant an oled screen as in this image.same controller, but i think is clearly unusable if you want an oscilloscope... maybe if you have very good eyes! :Pbut is a nice fit for any project using a classical 2x16 LCD... :)oh, in some days i will join to "i made it" club.is interesting, anyway, and... multimeters, soldering irons and stabilized power supplies aren't "too few"! :P

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  • mistrije commented on Peter Balch's instructable Oscilloscope in a Matchbox - Arduino2 months ago
    Oscilloscope in a Matchbox - Arduino

    yeah, i already get an DSO138: he's not a "true" scope, but close enough... you can consider this as a very cheap "scopemeter", with some nice features. ah, and some other guys think the software can be improved a bit, so... DLO138 was born! :)but this "matchscope" can be nice to have on the way: pretty small, cheap and enough features...and about 3.3V: not sure about "genuine" Nano, but chinese clones get this 3.3V from CH34x, used as a USB/serial converter, so, this current cannot be very high (i learned this in hard way: some OLEDS can need an high amount of current!).i heard about some clones using a cascade of two ams1117, a 5V one, and a 3.3V one.if someone is having problems with reference, maybe is need to use an ams1117-3.3 for this porti...

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    yeah, i already get an DSO138: he's not a "true" scope, but close enough... you can consider this as a very cheap "scopemeter", with some nice features. ah, and some other guys think the software can be improved a bit, so... DLO138 was born! :)but this "matchscope" can be nice to have on the way: pretty small, cheap and enough features...and about 3.3V: not sure about "genuine" Nano, but chinese clones get this 3.3V from CH34x, used as a USB/serial converter, so, this current cannot be very high (i learned this in hard way: some OLEDS can need an high amount of current!).i heard about some clones using a cascade of two ams1117, a 5V one, and a 3.3V one.if someone is having problems with reference, maybe is need to use an ams1117-3.3 for this portion...on top of that, this thing can make useful a Pro Mini. as a side note: some (long) years ago, i stumbled upon "superprobe" (from http://mondo-technology.com/), a pic-based thingie able to measure and generate some signals.i think i can get an "arduino superprobe" taking your software and modifying for a "horizontal" version of SH1106, and trying to keep "probe" look and feel.unfortunately, this means i cannot keep the scope part... but i can made it same as MasterLaptopP made his version, with a "normal" version of OLED!... :)

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  • mistrije commented on Peter Balch's instructable Oscilloscope in a Matchbox - Arduino2 months ago
    Oscilloscope in a Matchbox - Arduino

    "Is it worth it? The number of features is getting ridiculous. OK, why not?"maybe an external adc will make the scope a little bit faster. maybe tlc5510 will be a fit, but this means locking 8 Arduino pins for scope!...ads1015 is an iic adc, so... but i missed his data rate! BUT... we can add an digital pot to ad9833' out, to have a digitally/controlled signal level? :Pjust for the sake of features! :angelface:

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  • mistrije commented on Peter Balch's instructable Oscilloscope in a Matchbox - Arduino2 months ago
    Oscilloscope in a Matchbox - Arduino

    ... ads1015? :D

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  • FX2LP CY7C68013A USB Dev Board (Logic Analyzer)

    1 day update.that solution works in this very moments, but after a day, nothing!PulseView find the device, but wasn't able to open and control... so... again, look at drivers! :)as i already said, for whatever reason, even if you download a 64bit build, you will get a 32bit build of Sigrok/PulseView, so, if you install WinUSB drivers, the device will be seen, but unusable.so, open Zadig again, search for "libusb-win32" in the right tab, and install! :)i tried the max possible rate... 12 microseconds of data! :))))))))))))))))))))

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  • FX2LP CY7C68013A USB Dev Board (Logic Analyzer)

    i got today my FX2 board from aliexpress.i used the same (i think, we're in 2019, the 'ible was written in 2016) driver from Cypress website, downloaded the last version available of Sigrok/Pulseview for windows 7_64 (but this was a 32bit build, so... hmmmm!), and used Zadig, as is advised here.but BAM, after Zadig was "succesfully updated" the driver, Pulseview was given that error message, even before he was able to see and use the board.after a reboot (we're under Windows, remember? :P), and uninstalling driver installed by Zadig with Zadig (yes, he can do this finely) and reinstalling Cypress driver (with Zadig, too! not manually), all was fine, again! :)so... either driver was updated, or Sigrok/PulseView code was updated, and now Sigrok is working fine with Cypress drive...

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    i got today my FX2 board from aliexpress.i used the same (i think, we're in 2019, the 'ible was written in 2016) driver from Cypress website, downloaded the last version available of Sigrok/Pulseview for windows 7_64 (but this was a 32bit build, so... hmmmm!), and used Zadig, as is advised here.but BAM, after Zadig was "succesfully updated" the driver, Pulseview was given that error message, even before he was able to see and use the board.after a reboot (we're under Windows, remember? :P), and uninstalling driver installed by Zadig with Zadig (yes, he can do this finely) and reinstalling Cypress driver (with Zadig, too! not manually), all was fine, again! :)so... either driver was updated, or Sigrok/PulseView code was updated, and now Sigrok is working fine with Cypress driver... :)the relevant details of my installed version of Sigrok/|PulseView:Versions, libraries and features:PulseView 0.4.1Qt 5.7.1glibmm 2.42.0Boost 1_60libsigrok 0.5.1/5:0:1 (rt: 0.5.1/5:0:1)- glib 2.44.1 (rt: 2.44.1/4401:1)- libzip 1.5.1- libserialport 0.1.1/1:0:1 (rt: 0.1.1/1:0:1)- libusb-1.0 1.0.20.11003-rc3 API 0x01000104- libftdi 1.2- Host x86_64-w64-mingw32.static.posix, little-endian- SCPI backends TCP, serial, USBTMClibsigrokdecode 0.5.2/6:0:2 (rt: 0.5.2/6:0:2)- glib 2.44.1 (rt: 2.44.1/4401:1)- Python 3.4.4 / 0x30404f0 (API 1013, ABI 3)- Host x86_64-w64-mingw32.static.posix, little-endian

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  • mistrije commented on lonesoulsurfer's instructable Variable Power Supply V23 months ago
    Variable Power Supply V2

    is right and wrong in the same time! :)phone batteries have own charging and protection circuit inside, so, if you have a "dead phone battery" you can to pry it off, and get the bare element inside.with a bit of luck is ok and chargeable, so, you need to connect it to charger as is shown in module diagram.but you can use is as is, with lonesoulsurfer's connections...and as a side note, some (old) phone batteries have 3 pins: two plus and one minus.one of those pluses goes right to the li-ion element, the other is going through a protection/charging circuit inside.

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  • mistrije commented on Jan_Henrik's instructable USB Oscilloscope With Signal Generator5 months ago
    USB Oscilloscope With Signal Generator

    .. nope, read it again: maximum of 7 Volts, not 70 Volts!not with those dividing resistances, anyway!normally, a souncard is having a maximum 0,7 V input capability.

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  • Component Tester - Test Almost Anything !!

    yes, you can. :)check the svn repository: in /software/trunk you will find an already compiled firmware to use with an arduino uno, and in /hardware you will find a folder "ArduinoUno_shield" with schematic for a shield.of course, you can use an uno, nano or mini pro, because all three are 328 based arduinos.oh, and this is the newest version, 1.13k... 1.12k is now outdated...

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  • Component Tester - Test Almost Anything !!

    try the Ardutester project, but is a very basic one, and his precision is... a mess! :)

    use a TL431.do some measurements first, modify the relevant makefile line(s), and it will be ok.

    ... this is not a Bascom project, but an avr-gcc instead!no wonder you get errors: install winavr, and try again.

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  • Setting the DS1307 Real Time Clock Using the Serial Monitor

    if you get funny settings like "(undescifrable random stuff) 165, 165, 165", there are some reasons:- SCL and SDA inverted;- wrong pins connection;- you try to use another pin for DS's Vcc than 5V;- your DS chip is fried,- your 'duino is fried, partly or at all.my Nano seems to be fried on his I2C port, but other pins are working, on my Mega i get normal responses on I2C port, so...in a pinch, you can try a "breadboarduino", and see what you get with that...

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  • The Idiot's Guide to Programming AVR's on the Cheap (with the Arduino IDE!)

    "avrdude: warning: cannot set sck period. please check for usbasp firmware update."- this is only about firmware for your usbasp, it's not important at all, you can live well with this! :)"avrdude: error: programm enable: target doesn't answer. 1avrdude: initialization failed, rc=-1Double check connections and try again, or use -F to override this check."- this IS your real problem: avrdude don't detect an mcu, -1 error is an hardware error code, meaning any of:- no mcu at all- mcu is working with another clock, or you disabled reset pin mai function, so, usbasp cannot detect the mcu. to solve this thing, you need an HV rescuer... search here, dmjlambert put a nice instructable on this subject.- mcu is connected to the wrong pins- usbasp connection cable is broken- ...

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    "avrdude: warning: cannot set sck period. please check for usbasp firmware update."- this is only about firmware for your usbasp, it's not important at all, you can live well with this! :)"avrdude: error: programm enable: target doesn't answer. 1avrdude: initialization failed, rc=-1Double check connections and try again, or use -F to override this check."- this IS your real problem: avrdude don't detect an mcu, -1 error is an hardware error code, meaning any of:- no mcu at all- mcu is working with another clock, or you disabled reset pin mai function, so, usbasp cannot detect the mcu. to solve this thing, you need an HV rescuer... search here, dmjlambert put a nice instructable on this subject.- mcu is connected to the wrong pins- usbasp connection cable is broken- mcu dont get his 5 (or 3.3) V to work- you fried the mcu! :)

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  • Joule Thief Low Voltage Battery Charger

    a common mistake on this type of circuits: do you made connections accordingly with starts and ends of the windings?points next of windings are starts, if you wire it "normally", exactly as you wind it up, this circuit will not work.so, you need to cross terminals of one of the windings, and it will work! :)

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  • mistrije commented on MustafaK6's instructable PCB Box3 years ago
    PCB Box

    ... you can go for more! :Dclean all soldering, rub traces with some sand paper to remove soldering mask, use a bottle of older but usable chloric ferride to dissolve all copper traces, and use some adhesive to close the box...next, you can use some selfadhesive vinyl, wallpare, etc, and you'll get a little box to encase a small project...

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