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dany_boy

Member
  • Content Count

    933
  • Joined

  • Last visited

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5 Followers

About dany_boy

  • Title
    Gimme coffee and I'll give you code
  • Birthday 1997-08-31

Profile Information

  • Gender
    Male
  • Location
    Mexico City
  • Interests
    Electronics, Robotics, Mechanics, Physics, Maths, Coding, Computers, RC stuff, Photography, Gaming, and Scuba Diving.
  • Biography
    I was born, I grew up, I study. Not much else
  • Occupation
    Engineering student

System

  • CPU
    6600k @4.6GHz 1.285v
  • Motherboard
    Asus Z170-A
  • RAM
    2x 8GB HyperX @2133MHz
  • GPU
    G1 gaming 1060 @2150MHz with white paintjob
  • Case
    S340 White with custom smart LED lighting
  • Storage
    Adata SX8000 NVME 256GB + 2TB HDD
  • PSU
    EVGA 600W 80+Bronze
  • Display(s)
    1080p Ultrawide
  • Cooling
    Corsair H100i V2
  • Keyboard
    Corsair K70 with cherry reds
  • Mouse
    Logitech G502 spectrum
  • Sound
    HyperX Cloud + Mini sound system
  • Operating System
    Win10

Recent Profile Visitors

1,374 profile views
  1. dany_boy

    Measuring Current on LED's with a Multimeter

    Hot damn! salt much? I feel like we both need to calm down and watch this video instead of turning the forums into youtube comment section: That being said, I still stand by the point I said, specially given the lack of concrete evidence that you have provided. Either way, on Monday I'll borrow some equipment from my Uni labs and perform measurements with a remote sense feature to eliminate the small resistance in the wires. I will use a clamp meter too if I can and we can them compare concrete results. Cheers!
  2. dany_boy

    Measuring Current on LED's with a Multimeter

    Ok Im back (the seafood was absolutely awesome BTW). HAHAHA it really cracked me up. Almost reminds me of the YouTube comment section. For your peace of mind, here are my meters: And here is why I say that that the shunt resistor in the mA range of a meter is only a couple of ohms: I have been doing electronics for the last 7 years of my life, 2 of my uncles (who have masters degrees in electrical telecommunications engineering), as well as my professor of electric circuits (with a PH.D in some digital electronics design subject) have taught me that the resistance in a good meter while measuring current, is not significant to the current measurement value for any given range. If you have another explanation, or you feel like I have been lied to, please explain yourself with actual theory, data, and calculations. I am more than happy to listen and change my mind. But the way I see it, a component with an ESR of 83 ohms is not gonna be hugely affected by 3 ohms more in a very significant way. @5chmidti Here are some measurements that I took with a 30cm length of wire between the ardiuno and the LED strip: 1 LED all white: 3.945v -- 16.35mA 2 LEDs all white: 3.832v -- 31.31mA 5 LEDs all white: 3.702v -- 72mA (had to change the scale) This is of course a non-ideal scenario, since I'm feeding the arduino + LEDs with a PC USB 1m long cable. But it should give you a rough idea of what to expect. Next week I might have time to collect some more controlled data. Let me know if you want me to do this full on "lab report" along with uncertainties and all that cool stuff. Cheers!
  3. dany_boy

    Measuring Current on LED's with a Multimeter

    <sarcasm> sure I'm just pulling all of this out of my ass to troll people </sarcasm> Ill be back in a couple of hours, then we'll keen on discussing.
  4. dany_boy

    Measuring Current on LED's with a Multimeter

    I just went out to eat, if you give me a couple of hours I can provide you with a detailed explanation and calculations. In a nutshell, at full brightness a single well fed led will consume a little under 60 mA. (Big emphasis on single and well fed) Cheers!
  5. dany_boy

    Measuring Current on LED's with a Multimeter

    Dude, come on man. Ok Here we go. First of all I apologize if I come across as pedantic or condescending, it is really not my intention. That being said, please inform yourself before giving ill advice on how to use electronic equipment. Take a look at the uni-t product specification for the clamp mete, particularly at the current capabilities: DC Current (A) 2A/20A/100A ±(2%+3) and consider this is a 2000 count meter. that means that if you are gonna measure a current in the order of (3*10^-2) A, your precision is gonna be ±2% (not a big issue), and ±3 counts which considering the order of magnitude of your measurement will equate to about 10% of additional relative error, which is huge! Plus the fact that even after zeroed out, clamp meters tend to drift. This one in particular has been found to drift in the 2A range up to 40 counts after 1 minute with crappy batteries and 10 counts in a minute with decent batteries (source). Again, for big currents, that is really not a big issue, but for the case here it is. Now take a cheap-o multi-meter without a μA range. This is important because the μA range has a rather large 400-ish ohm shunt in series. The mA range on the other hand, will have a shunt of a couple of ohms for most meters. Looking back at the error, most crappy meters will have 2000 counts too, with a precision of 2% ± 5 counts (based on experience with them). At a current in the order of (3*10^-2) A, you will get ± 2% (again not a big deal), but now with the 200mA range those 5 counts will only equate to about 1% of added relative error. So for small currents, a crappy meter is somewhat better than a clamp meter. And if @5chmidti does not have a clamp meter already, then that is money he could have spent buying a good multi-meter in the first place. Cheers!
  6. dany_boy

    Measuring Current on LED's with a Multimeter

    Keep using the meter that you have, clamp meters are only good for fairly high currents otherwise the precision will screw you over big time.
  7. dany_boy

    Measuring Current on LED's with a Multimeter

    Are you for real? Or just trolling?
  8. dany_boy

    7 or 5 channel audio reactive led lighting...

    Something like this but on a bigger scale? http://www.ebay.com/itm/DIY-KIT-AS1424-digital-Level-Meter-Audio-LED-Display-Flashing-Spectrum-Analyzer-/282217008133?var=&hash=item41b571cc05:m:mnp9OmwUrJIY6aYDgS6893w Sure its more than possible. Look into arduino FFT as a way to start
  9. dany_boy

    DJI's "fun-sized" drone.. isn't that fun...

    Not as portable though. The really amazing thing about the spark is all the technology they managed to put into such a tiny form factor while still maintaining a 10+ minutes flight time.
  10. dany_boy

    DJI's "fun-sized" drone.. isn't that fun...

    DJi dominating the drone enthusiast market? HAHAHAHA yeah right. Still a great vid though
  11. dany_boy

    Soldering a USB instead of DC input.

    If the amp works with 5v and draws less than 1A, then it should be perfectly fine.
  12. dany_boy

    Looking for a solution.

    You can use the str.split() method with the colon as your separator. Create an array containing the separated words "Linus" "Tech" "Tips" and return the third element don't forget to destroy the array so that it does not clog up your memory. As @M.Yurizaki pointed out, you might want to try with readline() instead of read().
  13. dany_boy

    New LG IPS Monitor not diplaying correctly?

    Use HDMI. VGA is garbage in this day and age, stay away from it. Some "DVI-d" cables are actually fake, try to stay away from the cheap and thin ones.
  14. dany_boy

    LED Strip Power Supply?

    Just provide the strip with 12v and enjoy the lights. The strip has integrated current limiting resistors. Cheers!
  15. dany_boy

    OFFGRID SOLAR GAMING PC

    What I'm trying to say is that connecting the solar array directly to the battery without any form of proper charging circuitry will significantly reduce the lifespan of the battery. Most Lead-Acid batteries don't even like being charged at more than 0.5C, and given the capacity of the battery (what I estimated) the solar array will charge it way too fast, not to mention the lack of proper monitoring. Sure it can be done, but its janky AF.
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