The EEVblog Chat system is a place for like minded people to hang out and chat about electronics, or anything in general.
There is just one rule, don’t be a dick.

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    • moe qahtani

      Hello, I have been doing a research on how to measure the energy of a spark. I’m having an issue with the duration of the spark which is about 3 micro seconds. If anyone knows how to deal with that, help is needed.

    • showdoc

      curious –
      have seen a a number of constant volt/current output modules on ebay –

      anybody have one or know how good these are?
      like to build a bench power supply – thought these might work nicely vs one of the cheaper units.


    • 2ontrack

      Forget solar roofs. The world’s first solar road is here, in the small village of Tourouvre-au-Perche in Normandy, France. The 1 kilometer road was opened yesterday by French Ecology Minister Ségolène Royal and could generate enough electricity to power the street lights.

    • Dave, The EEVblog Brymen BM235 Multimeter on Amazon (US) shows “currently unavailable”. Will more be available soon? Looking forward to getting one soon!

    • Rafael Lafuente

      Hello from Spain, Dave. I need a soldering station (only with iron, no air) but under 100 €, and all the models about this price are Aoyue, Yihua, Bakku… Please can you help me about this? (no hakko, please, because hakkos in Spain are all fake. The original Hakko works in 110 V. and the Hakko I can buy here works in 220 V. , fake)
      Best Regards

    • Ali Namazi

      Hello from Germany. Can anyone say that this Desoldering-Unit is good?

    • Marian Calarasu

      Hello from Romania. Any sugestions about Stamos brand?
      I’m interested about a hot air soldering station…

    • Taiga

      I have been waiting for admin approval of my registration since January 4th. Is this normal? What am I supposed to do to get approved?

    • Richard Mellersh

      ‘Gday from Oxfordshire in the UK. Hi Dave, your blogs are becoming addictive – keep it up – firstly, as a result of one of your blogs & after a bit of research I bought ‘The Art of Electronics’ (the real one) and I can’t put it down!. second, I bought one of your EEVBlog DMM’s and it is just as you say a great little thing. third thing, I already had a CEM DT-9663BT and was wondering if it is this maker that you are using for you 121CW? If so would you be able to review this model sometime as I’m curious to know about the trimpots all over the pcb. all the best blue.

    • Andrew Stein

      Love the videos. Would you do a “Tear Down” / “Debunking” of HDMI converters like this? See these examples on Amazon – I would like to know if these things work. Or are they fakes? I don’t want to give up my older receiver that requires RCA input, for 5.1 surround. Amazon link:

      • Gunjan Upadhyay

        can you share details about your HDMI source device and Amp .
        these devices do work there is nothing to Debunk about them ,they take digital input converts it to analog output , they provide additional HDMI & SPDIF out similarly to USB Hubs ,and since HDMI is digital signal there is no degradation in its HDMI out.Because there are so many similar devices before ordering make sure the device you order have minimum 20 to 25 reviews and feedback of 3.5 – 4 star.

        If your source is a P.C. / Mac or a Laptop the best result you will get is by using device like :

        Creative Sound Blaster X-Fi Surround 5.1 Pro USB Audio System Link- or Asus Xonar U7 Link- these two devices are amazing having S/N Ratio greater than 105 – 110 dB.Gunjan ,

    • Fabio Barone

      Hi Dave, I enjoyed watching EEVblog #527, then I searched your blog ( for any new videos or posts regarding Altium CircuitMaker, but got no results for “altium” or “circuit maker” and all permutations of these strings for lower case, upper case, spaces, no spaces, etc. What gives? Has there been any videos on Circuit Maker since #527? Thanks in advance.

    • aljosa mlinaric

      Hi Dave

    • Stephen Low

      Hi Dave,

      I’m staggered by the genius behind some pairs of eyes. This one floored me tonight.
      (No affiliation).

    • Martin C


      Has anyone watched the “The Theory of Everything” a 2014 movie about Stephen Hawking? There is one scene where Stephen Hawking is taken to the lab where Rutherford split the atom. You can see an oscilloscope in the scene.

      I am fairly certain that it is way too modern for an early 1960’s oscilloscope.

      Can anyone out there confirm that?


    • Hi Dave, been watching your chanel for a while now, and love electronics and a master noob in electronics. doesn’t bother me, i enjoy learning, especially from people like you.

      What i notice as an absolute noob is that it is hard to find simple electronic circuits. like a diode in combination with a capacitor produces a way to measure the peak level of an ac input.

      As a noob i am super intrested in these kind of mini circuits. Maybe an idea to do a eevnoob channel or something ?

      good luck mate and thanks so far.

    • Steven Corson

      I’m designing a hand-held device for a
      client, and I’m in need of a membrane switch keypad. One of the requirements is that the
      keypad be manufactured to withstand moisture. Do you know any companies who specialize
      in very tough keypads for rigorous environments?

      • Gregory Heinz

        While I’m not sure where you are located, I’ve used a company called SSI Electronics in The States.
        They had a ton of unique ways to “beef up” a typical keypad to make it stand up to harsh environments. In fact, the project I used them for was a medical one. I typically find that nurses are very hard on equipment(not to mention the chemicals they use), and we’ve had great success after a couple years of our products being in the field. Good Luck!

    • Gabriel Barrandeguy

      what is the best universal programmer ? xeltek vs elnec

    • Ilan Messing

      uh oh! why is chat down?

    • Mounish Periyasamy

      WIll DSO is more enough for power analysis of a crypto system or i need to go with MSO?

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