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Huaxing Intelligent Control UWBLOC positioning system adopts self-developed wireless pulse ranging technology to achieve precise positioning of exhibition hall personnel and exhibits. The positioning accuracy is better than 30 cm. By setting the base...
Dyson V6 Setup and Running System Dyson handheld vacuum cleaners utilize high RPM brushless DC motors. Specifications indicate that some models can reach as high as 125000 RPM. I’ve disassembled DC56(V2), V6, and V10 models. Each has a brushless single-phase...
Some people say that if LED street lights are not powered by solar energy, they will have no further value for use; Some people also say that solar power supply will only make the production cost of LED street lights more expensive, making it difficult...
AC servo motor and DC servo motor are two classifications of servo motors. In this article, we'll briefly cover some of the main differences between AC and DC servo motors and their respective advantages and disadvantages, but let's start with some basics.DC...
Some manufacturers make low power AC-DC modules for small appliances, IoT devices and smart meters. MeanWell may come to mind (IRM-05-3.3), but one of the most cost-competitive modules is the Hi-Link HLK-PM03. Here I will have a closer look at how the...
For the maintenance of ACservo motor control systems, the following are some common precautions:(1) Clean the servo motor and controller regularly to ensure that their surfaces are clean and to prevent dust, oil and other impurities from entering the...
So while still waiting for HBSound's Prototyping sponsor, PCBWay, to finish up and ship off the prototypes for that project. I did have some time to work on the ZX81 Restoration. I am still working through the best way to clean...
Well here's another year :) I've made this as a space to manage my thoughts on this Zx81. To be honest there's probably better examples out there as to the correct way to do this. I would direct you to these places first. But if you're interested...
Continuing from my last post, I had some time waiting on parts to finish the analog prototype testing for HBSound so I set up the new scope and ... It lives: I like to think about the video output as the consciousness of these old home computers....
Having trouble uploading?Curious about what we want from your design files?Here are some help pages for using common CAD packages with OSH Park:Altium CircuitMakerAltium DesignerCadence Allegro (OrCAD)Copper ConnectionDesignSparkDipTraceEagleEasy-PCFreePCBFritzingGerbVKiCADMentor...
Most clocks use sound to wake you up. This clock is no exception. A little "DFPlayer Mini" module does all of that, also MP3 decoding. It even includes a speaker driver. Yue Xin YX5200-24SS module! Check for short circuit between pin 3 and...
No, this isn't like the sound of one hand clapping. Several popular ham antennas depend on multiple sections of coax, which act alternately as radiators and delay lines. The velocity of propagation in the delay lines is well known, being 66% for solid...
A80 Teardown The newer A80 with QHD at 30 fps and 4K24p capabiltiy (20MP still frames) has a lens shroud that is tucked under the front cover (left), which needs careful persuasion for its clips to release without breaking. The short sides appeared to...
Long ago, in a land called Kettering, OH, my 14-year-old self got bored, restless and discontent, but this was no ordinary case of adolescent ennui. I was jealous, longing, consumed by the desire to do one thing above all else. It was a crazy...
This article shows the basics of capacitor safety. 1. My Story When I was a teenager we used to Soviet mains powered have film projector. This project had a small AC motor, that was used to roll the film. It had a capacitor or varistor connected in parallel...