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14 CommentsBuon Ma Thuot, DakLak Province, VietNam

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  • The Definitive Guide to LED Accent Lighting

    Re: "Waterproof"The company I work for designs LED applications for buildings and automotive 'bling' applications.Your description of "waterproof" is misleading, splashproof is likely what you have."Splashproof" strip lighting is terminated in a pair of wires and covered with usually, white, heatshrink."Waterproof" strip lighting is terminated in a plastic cover that is molded on to the lighting strip. There is also about a 30-40% premium charged for this. Additionally, the plastic covering the LEDs is far less likely to discolour due to UV (sunlight) exposure.There is, also, consideration to be given to the safety aspects of these LED strips and how/what they powered by.

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  • DakLak commented on Constructed's instructable 100w LED Flashlight 9 months ago
    100w LED Flashlight

    Have a look at < >. The presenter uses a variable power supply to show that many of the LEDs are actually defective!

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  • Program & Control Arduino + PHIRO robot simultaneously with Pocket Code smartphone app

    After writing our own App for controlling military-type robots (the types that go BANG!), for developing countries, I sure appreciate learning about the Google App, thanks to you we have improved out products!

    After writing our own Apps for controlling military/industrial-type robots (the types that go BANG!), for developing countries, I sure appreciate learning about the Google App, thanks to you we have improved our products!And our App writers don't look so clever now.

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  • DakLak commented on edy's instructable Easy GoPro Macro Ring Light10 months ago
    Easy GoPro Macro Ring Light

    GoPro (at least my model) has a round lens bezel and my SJCAM SJ5000X (by far a superior range of cameras given their price/feature ratio) has a square lens bezel. For both I have manufactured polycarbonate sleeves that slip firmly over the appropriate lens for attaching to a copying frame which I place over the object to be photographed.Now, having seen your concept, and excellent article, I have changed my configuration so that your ring-light is attached to the lens sleeves and the camera's mounts are used to attach to the stand.GoPro cameras have to be used with their cases since part of the lens is within the camera case.The lens of SJ5000X is wholly within the camera, which means the case can be dispensed with for this use, allowing the camera to hold the light-ring even more clos...see more »GoPro (at least my model) has a round lens bezel and my SJCAM SJ5000X (by far a superior range of cameras given their price/feature ratio) has a square lens bezel. For both I have manufactured polycarbonate sleeves that slip firmly over the appropriate lens for attaching to a copying frame which I place over the object to be photographed.Now, having seen your concept, and excellent article, I have changed my configuration so that your ring-light is attached to the lens sleeves and the camera's mounts are used to attach to the stand.GoPro cameras have to be used with their cases since part of the lens is within the camera case.The lens of SJ5000X is wholly within the camera, which means the case can be dispensed with for this use, allowing the camera to hold the light-ring even more closer to the lens, giving a better quality photograph.I have my own Argon stainless steel welding set so manufacturing stands is no problem. Next I intend to make a microscope-like stand so I can use a knob to frame the object being shot.Keep up the great work!

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  • DakLak commented on jaksherry's instructable 100W LED in PVC Flashlight10 months ago
    100W LED in PVC Flashlight

    An alumin(i)um tube would be best as that metal has superior heat conducting propertoes.

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  • DakLak commented on Constructed's instructable 100w LED Flashlight 10 months ago
    100w LED Flashlight

    I have a bit of a fetish for LEDs and LED lasers, especially since living next to China, in VietNam, where we buy LEDs by weight and not by the count - at least up to 3W units.My LEDs are from an importer which means my supplies are 'loose' - and one of the things I buy are circular alumin(i)um PCBs. The conductive tracks are insulated from the alumin(i)um by a carrier film.Where the LEDs are situated are naked circles of exposed alumin(i)um so that heat transfer, using heat conductive paste, is optimised.The LEDs are of the builders choice, the only constraint being the PCB, but I use 3W units connected in series / parallel which is the choice of the professional illumination companies. They never use a single high-power LED. The series / parallel configuration allows the LEDs to be dr...see more »I have a bit of a fetish for LEDs and LED lasers, especially since living next to China, in VietNam, where we buy LEDs by weight and not by the count - at least up to 3W units.My LEDs are from an importer which means my supplies are 'loose' - and one of the things I buy are circular alumin(i)um PCBs. The conductive tracks are insulated from the alumin(i)um by a carrier film.Where the LEDs are situated are naked circles of exposed alumin(i)um so that heat transfer, using heat conductive paste, is optimised.The LEDs are of the builders choice, the only constraint being the PCB, but I use 3W units connected in series / parallel which is the choice of the professional illumination companies. They never use a single high-power LED. The series / parallel configuration allows the LEDs to be driven at optimum levels from a 12V power source. And don't forget a breaker or fuse in the power feed.Power consumption is minimised by use of PWM based on a 555-timer chips and a handful of components. The frequency and waveform ratio can be preset or brought out as controls.In a couple of my larger 'flashlights' I have mounted a single LED laser - green is best for temporarily blinding people - under a separate control. I use stainless steel Grade 302 for my cases.I use LEDs on my motorcycles for daylight running lights, the headlight, etc. Bus drivers, who tend not to dip their headlights for motorcycles, get respect when I crank all the LEDs up to brightest.///

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  • DakLak commented on Just4Fun Media's instructable Fix Your QuadCopter10 months ago
    Fix Your QuadCopter

    BENT PROPS, if commercially moulded - not 3D - can sometimes be returned to their original profile by very, very, gently heating them in an oven - whilst you monitor their resurrection through the viewing window.Leave them alone and they might melt!

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  • Phosphorescent Bike With Ultraviolet LEDS

    You have a great looking workshop there, sign of a true craftsman. About those wine bottles - are they for a mid-project break?

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  • DakLak commented on MichaelA29's instructable Iphone Cable Repair10 months ago
    Iphone Cable Repair

    Apple thinks of everything to keep on making that money. Perhaps they even have a patent on that cheap cable sheath that fails when someone tries to repair it.

    I have used heat shrink tubing but it has a shirt finite life until it splits.

    Great implementation! Pity IVES didn't have enough practical smarts as you have.Of course, we should remember Apple depends on cheap quality cables to leep their cash flow, flowing.

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