Logitech c270 waves nx1/2/2023 ![]() Since the charge stays constant, changing the capacitance causes a tiny voltage fluctuation that can be retrieved as the audio signal from the microphone. If that capacitance is incorporated into an RC circuit with a very high impedance and a high voltage is applied, a near constant charge is placed upon it. Sound waves cause the diaphragm to vibrate, and these vibrations change the capacitance between diaphragm and mesh. It’s a capacitor formed from a very thin conductive sheet that functions as the diaphragm, mounted in front of another conductor, usually a piece of mesh. It was only upon submitting the order that I had a thought for the first time in my life: Just what IS an electret condenser microphone?Ī condenser microphone is easy enough to explain. To be strictly accurate I ordered a pack of them, these small cylindrical microphones are of extremely high quality for their relatively tiny price. When designing a microphone assembly the other day, I reached for an electret condenser microphone capsule without thinking. Ĭontinue reading “Customizing STLs For Off-Brand Devices” → Posted in 3d Printer hacks, digital cameras hacks, Peripherals Hacks Tagged 3d printed, camera mount, sketchup, stl If you’re interested in learning more about using SketchUp for designing 3D printed parts, check out this excellent guide by our very own. event went ahead and released his modified STLs as a remix of the original case he found on Thingiverse for anyone else that has the same camera. To adjust the depth of the mount, he simply stretched the model out on the Z axis. This gave him a clean slate to add the appropriate openings for his camera’s USB port and microSD card. He loaded the STL into SketchUp, deleted the two sides, and replaced them with new surfaces. He found a GoPro mount that was about 90% there, he just needed to adjust the depth and change the positioning of the holes on the side. ![]() That being said, got rather lucky in this case. The final output has been “flattened”, so that granular control is lost. It’s a bit like trying to take an edited image and get back to the layers that were used to create it in Photoshop or GIMP. An STL is essentially a completed solid model, and not really meant to be fiddled around with. Luckily, a check with his calipers confirmed his camera is just about the same size as an old GoPro Hero 3, so all he had to do was modify an existing design to fit his needs.Īs anyone who’s worked with STL files will tell you, they are a pain to modify. To make matters worse, it turns out the camera is so low-key that he couldn’t find a 3D printable mount for it either. needed a mount for his off-brand action camera, but it’s not exactly the kind of thing with a bustling accessory market. Posted in hardware, Tool Hacks Tagged germanium, optics, thermal imaging, zinc selenide Given their utility as a diagnostic tool, a thermal camera might be something worth adding to your bag of tricks. We’ve seen an impressive array of thermal camera hacks and projects recently, no doubt due to the falling prices of consumer-level imaging hardware. The majority of that is for the special lenses though, so if you can score some on the second-hand market it can drop the cost significantly. gives a complete bill of materials and cost breakdown for his telephoto converter, but prepare for a bout of sticker shock: the total cost with all new hardware is nearly $500 USD. But telephoto is a bit more involved, and the rest of the whitepaper details the math and construction techniques used to assemble it the optics. He suggests keeping an eye out on eBay for surplus optics you could pull them out of to keep costs down.Ĭreating the macro adapter is easy enough, you simply put a convex lens in front of the thermal camera. These aren’t exactly the kind of thing you can pick up at the local camera shop, and even small lenses made of these materials can cost hundreds of dollars. ![]() Glass doesn’t transmit the wavelengths that thermal camera is looking for, so the lenses need to be made of either germanium or zinc selenide. In his detailed whitepaper, starts by describing the types of lenses that are appropriate for thermal imaging. ![]() He’s working with the Seek RevealPro, but the concept should work on hardware from other manufacturers as well. With his custom designed and built optics, he’s demonstrated the ability to not only zoom in on distant targets, but get up close and personal with small objects. Writes in to tell us about his recent experiments with building lenses for thermal imaging cameras, which to his knowledge is a first (at least as far as DIY hardware is concerned). ![]()
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