A Microwave Kiln, From Scratch
https://hackaday.com/2019/07/20/a-microwave-kiln-from-scratch/
We are normally told that microwave ovens are strictly for food only, and that anything else will cause all sorts of bad things to come our way. There can be few readers who haven’t at some time seen the shower of sparks when an inadvertent metallic object finds its way …read more (https://hackaday.com/2019/07/20/a-microwave-kiln-from-scratch/)
https://hackaday.com/2019/07/20/a-microwave-kiln-from-scratch/
We are normally told that microwave ovens are strictly for food only, and that anything else will cause all sorts of bad things to come our way. There can be few readers who haven’t at some time seen the shower of sparks when an inadvertent metallic object finds its way …read more (https://hackaday.com/2019/07/20/a-microwave-kiln-from-scratch/)
The Case Of The Vintage Computer, The Blown Fuse, And The Diode
https://hackaday.com/2019/07/20/the-case-of-the-vintage-computer-the-blown-fuse-and-the-diode/
If you are the operator of a vintage computer, probably the only one of its type remaining in service, probably the worst thing you can hear is a loud pop followed by your machine abruptly powering down. That’s what happened to the Elliott 803B in the UK’s National Museum Of …read more (https://hackaday.com/2019/07/20/the-case-of-the-vintage-computer-the-blown-fuse-and-the-diode/)
https://hackaday.com/2019/07/20/the-case-of-the-vintage-computer-the-blown-fuse-and-the-diode/
If you are the operator of a vintage computer, probably the only one of its type remaining in service, probably the worst thing you can hear is a loud pop followed by your machine abruptly powering down. That’s what happened to the Elliott 803B in the UK’s National Museum Of …read more (https://hackaday.com/2019/07/20/the-case-of-the-vintage-computer-the-blown-fuse-and-the-diode/)
Designing Compact Gasoline Generator Prototype for Drone Use
https://hackaday.com/2019/07/20/designing-compact-gasoline-generator-prototype-for-drone-use/
Lithium batteries and brushless motors helped make multirotor drones possible, but batteries only last so long. Liquid fuels have far greater energy densities, but have not been widely applied in these roles. [Tech Ingredients] has been experimenting with a compact gasoline-fueled generator, with the aim to extend drone flight times …read more (https://hackaday.com/2019/07/20/designing-compact-gasoline-generator-prototype-for-drone-use/)
https://hackaday.com/2019/07/20/designing-compact-gasoline-generator-prototype-for-drone-use/
Lithium batteries and brushless motors helped make multirotor drones possible, but batteries only last so long. Liquid fuels have far greater energy densities, but have not been widely applied in these roles. [Tech Ingredients] has been experimenting with a compact gasoline-fueled generator, with the aim to extend drone flight times …read more (https://hackaday.com/2019/07/20/designing-compact-gasoline-generator-prototype-for-drone-use/)
Create A Low-Cost, High-Accuracy LCR Meter With An STM32 MCU
https://hackaday.com/2019/07/20/create-a-low-cost-high-accuracy-lcr-meter-with-an-stm32-mcu/
Having a good LCR meter was something which [Adil] had wanted for his personal lab, so as any good university student (and former Hackaday contributor) does, he ended up building his own. Using a Nucleo-F446RE board for the MCU side and a custom PCB for the side that does the …read more (https://hackaday.com/2019/07/20/create-a-low-cost-high-accuracy-lcr-meter-with-an-stm32-mcu/)
https://hackaday.com/2019/07/20/create-a-low-cost-high-accuracy-lcr-meter-with-an-stm32-mcu/
Having a good LCR meter was something which [Adil] had wanted for his personal lab, so as any good university student (and former Hackaday contributor) does, he ended up building his own. Using a Nucleo-F446RE board for the MCU side and a custom PCB for the side that does the …read more (https://hackaday.com/2019/07/20/create-a-low-cost-high-accuracy-lcr-meter-with-an-stm32-mcu/)
A Multi-Layered Spin On Persistence Of Vision
https://hackaday.com/2019/07/20/a-multi-layered-spin-on-persistence-of-vision/
By taking advantage of persistence in human vision, we can use modest bits of hardware to create an illusion of a far larger display. We’ve featured many POV projects here, but they are almost always an exploration in two dimensions. [Jamal-Ra-Davis] extends that into the third dimension with his Volumetric …read more (https://hackaday.com/2019/07/20/a-multi-layered-spin-on-persistence-of-vision/)
https://hackaday.com/2019/07/20/a-multi-layered-spin-on-persistence-of-vision/
By taking advantage of persistence in human vision, we can use modest bits of hardware to create an illusion of a far larger display. We’ve featured many POV projects here, but they are almost always an exploration in two dimensions. [Jamal-Ra-Davis] extends that into the third dimension with his Volumetric …read more (https://hackaday.com/2019/07/20/a-multi-layered-spin-on-persistence-of-vision/)
Breathing LED Done with Raw Logic Synthesized from a Verilog Design
https://hackaday.com/2019/07/20/breathing-led-done-with-raw-logic-synthesized-from-a-verilog-design/
Breathing LEDs are an attractive adornment on many electronic devices. These days they’re typically controlled by software but of course there were fading effects back in the days of analog too. [Pepijn de Vos] mixes a little of the new and the old by building a hardware-based fader from a …read more (https://hackaday.com/2019/07/20/breathing-led-done-with-raw-logic-synthesized-from-a-verilog-design/)
https://hackaday.com/2019/07/20/breathing-led-done-with-raw-logic-synthesized-from-a-verilog-design/
Breathing LEDs are an attractive adornment on many electronic devices. These days they’re typically controlled by software but of course there were fading effects back in the days of analog too. [Pepijn de Vos] mixes a little of the new and the old by building a hardware-based fader from a …read more (https://hackaday.com/2019/07/20/breathing-led-done-with-raw-logic-synthesized-from-a-verilog-design/)
Project Perceives Pondering, Prints Poetry
https://hackaday.com/2019/07/20/project-perceives-pondering-prints-poetry/
If poetry is your thing, this hack might convince you that your brain is more advanced than the rest of us poor sots. [Roni Brandini] designed a system that prints lines of poetry when you concentrate. The Mind Poetry project uses an EEG headset from Mattel’s Mindflex toy and pipes …read more (https://hackaday.com/2019/07/20/project-perceives-pondering-prints-poetry/)
https://hackaday.com/2019/07/20/project-perceives-pondering-prints-poetry/
If poetry is your thing, this hack might convince you that your brain is more advanced than the rest of us poor sots. [Roni Brandini] designed a system that prints lines of poetry when you concentrate. The Mind Poetry project uses an EEG headset from Mattel’s Mindflex toy and pipes …read more (https://hackaday.com/2019/07/20/project-perceives-pondering-prints-poetry/)
Building A Bigger Cloud Chamber
https://hackaday.com/2019/07/20/building-a-bigger-cloud-chamber/
Cloud chambers are an exciting and highly visual science experiment. They’re fascinating to watch as you can see the passage of subatomic particles from radioactive decay with your very own eyes. Many elect to build small chambers based on thermoelectric Peltier elements, but [Cloudylabs] decided to do something on a …read more (https://hackaday.com/2019/07/20/building-a-bigger-cloud-chamber/)
https://hackaday.com/2019/07/20/building-a-bigger-cloud-chamber/
Cloud chambers are an exciting and highly visual science experiment. They’re fascinating to watch as you can see the passage of subatomic particles from radioactive decay with your very own eyes. Many elect to build small chambers based on thermoelectric Peltier elements, but [Cloudylabs] decided to do something on a …read more (https://hackaday.com/2019/07/20/building-a-bigger-cloud-chamber/)
DIY Industrial Oven Brings the Heat
https://hackaday.com/2019/07/21/diy-industrial-oven-brings-the-heat/
When [Turbo Conquering Mega Eagle] tried lost wax casting, he ended up with a fireball and a galvanizing sense of disappointment. There wasn’t enough heat to get all the wax out, and the paraffin ignited. Though a bit burned by the experience, it didn’t extinguish his desire to do lost …read more (https://hackaday.com/2019/07/21/diy-industrial-oven-brings-the-heat/)
https://hackaday.com/2019/07/21/diy-industrial-oven-brings-the-heat/
When [Turbo Conquering Mega Eagle] tried lost wax casting, he ended up with a fireball and a galvanizing sense of disappointment. There wasn’t enough heat to get all the wax out, and the paraffin ignited. Though a bit burned by the experience, it didn’t extinguish his desire to do lost …read more (https://hackaday.com/2019/07/21/diy-industrial-oven-brings-the-heat/)
A New Motherboard For Amiga, The Platform That Refuses To Die
https://hackaday.com/2019/07/21/a-new-motherboard-for-amiga-the-platform-that-refuses-to-die/
If you go out and buy a computer right now, how many choices do you really have? Generally speaking, there’s PC or Mac. If we were being generous you could consider Chromebook and perhaps even mobile, but let’s be honest, computing is a two-party system with the ability to dump …read more (https://hackaday.com/2019/07/21/a-new-motherboard-for-amiga-the-platform-that-refuses-to-die/)
https://hackaday.com/2019/07/21/a-new-motherboard-for-amiga-the-platform-that-refuses-to-die/
If you go out and buy a computer right now, how many choices do you really have? Generally speaking, there’s PC or Mac. If we were being generous you could consider Chromebook and perhaps even mobile, but let’s be honest, computing is a two-party system with the ability to dump …read more (https://hackaday.com/2019/07/21/a-new-motherboard-for-amiga-the-platform-that-refuses-to-die/)
External Buffer Boosts 3D Printer Filament Splicing on the Palette 2
https://hackaday.com/2019/07/21/external-buffer-boosts-3d-printer-filament-splicing-on-the-palette-2/
There was a time when most of us thought the next logical step for desktop 3D printing was to add additional extruders and hotends, allowing the machine to print in multiple colors or materials. Unfortunately such arrangements quickly become ungainly, and even with just two extruders, calibration can be a …read more (https://hackaday.com/2019/07/21/external-buffer-boosts-3d-printer-filament-splicing-on-the-palette-2/)
https://hackaday.com/2019/07/21/external-buffer-boosts-3d-printer-filament-splicing-on-the-palette-2/
There was a time when most of us thought the next logical step for desktop 3D printing was to add additional extruders and hotends, allowing the machine to print in multiple colors or materials. Unfortunately such arrangements quickly become ungainly, and even with just two extruders, calibration can be a …read more (https://hackaday.com/2019/07/21/external-buffer-boosts-3d-printer-filament-splicing-on-the-palette-2/)
An Epic Tale of Thermistors: Tricks for Much Better Temperature Sensing
https://hackaday.com/2019/07/21/an-epic-tale-of-thermistors-tricks-for-much-better-temperature-sensing/
For years [Edward] has been building professional grade underwater sensing nodes at prices approachable for an interested individual without a government grant. An important component of these is temperature, and he has been on a quest to get the highest accuracy temperature readings from whatever parts hit that sweet optimum …read more (https://hackaday.com/2019/07/21/an-epic-tale-of-thermistors-tricks-for-much-better-temperature-sensing/)
https://hackaday.com/2019/07/21/an-epic-tale-of-thermistors-tricks-for-much-better-temperature-sensing/
For years [Edward] has been building professional grade underwater sensing nodes at prices approachable for an interested individual without a government grant. An important component of these is temperature, and he has been on a quest to get the highest accuracy temperature readings from whatever parts hit that sweet optimum …read more (https://hackaday.com/2019/07/21/an-epic-tale-of-thermistors-tricks-for-much-better-temperature-sensing/)
A Baseball Cap That Films The Past
https://hackaday.com/2019/07/21/a-baseball-cap-that-films-the-past/
The vast majority of cameras will start recording at the press of a button. This is perfectly acceptable behaviour if you wish to film something that hasn’t happened yet. If you want to film something that’s already over, you’re out of luck. [Johan Link] has built a camera designed to …read more (https://hackaday.com/2019/07/21/a-baseball-cap-that-films-the-past/)
https://hackaday.com/2019/07/21/a-baseball-cap-that-films-the-past/
The vast majority of cameras will start recording at the press of a button. This is perfectly acceptable behaviour if you wish to film something that hasn’t happened yet. If you want to film something that’s already over, you’re out of luck. [Johan Link] has built a camera designed to …read more (https://hackaday.com/2019/07/21/a-baseball-cap-that-films-the-past/)
Hackaday Links: July 21, 2019
https://hackaday.com/2019/07/21/hackaday-links-july-21-2019/
Ordering a PCB used to be a [Henry Ford]-esque experience: pick any color you like, as long as it’s green. We’ve come a long way in the “express yourself” space with PCBs, with slightly less than all the colors of the rainbow available, and some pretty nice silkscreening options to …read more (https://hackaday.com/2019/07/21/hackaday-links-july-21-2019/)
https://hackaday.com/2019/07/21/hackaday-links-july-21-2019/
Ordering a PCB used to be a [Henry Ford]-esque experience: pick any color you like, as long as it’s green. We’ve come a long way in the “express yourself” space with PCBs, with slightly less than all the colors of the rainbow available, and some pretty nice silkscreening options to …read more (https://hackaday.com/2019/07/21/hackaday-links-july-21-2019/)
Making Instant Ramen a Bit More Instant
https://hackaday.com/2019/07/21/making-instant-ramen-a-bit-more-instant/
Instant ramen, the favoured repast of the impecunious would-be tech genius! It’s cheap, of dubious nutritional value, and it only takes a minute to cook. But what if you are in the creative Zone to the extent that five minutes to boil water is too much? For that you need …read more (https://hackaday.com/2019/07/21/making-instant-ramen-a-bit-more-instant/)
https://hackaday.com/2019/07/21/making-instant-ramen-a-bit-more-instant/
Instant ramen, the favoured repast of the impecunious would-be tech genius! It’s cheap, of dubious nutritional value, and it only takes a minute to cook. But what if you are in the creative Zone to the extent that five minutes to boil water is too much? For that you need …read more (https://hackaday.com/2019/07/21/making-instant-ramen-a-bit-more-instant/)
5G Power Usage Is Making Phones Overheat In Warm Weather
https://hackaday.com/2019/07/21/5g-power-usage-is-making-phones-overheat-in-warm-weather/
As reported by ExtremeTech, the brand new 5G network is running into a major snag with mobile devices as Qualcomm 5G modems literally cannot handle the heat. After just a few minutes of use they’re going into thermal shutdown and falling back to measly 4G data rates. Reports by both …read more (https://hackaday.com/2019/07/21/5g-power-usage-is-making-phones-overheat-in-warm-weather/)
https://hackaday.com/2019/07/21/5g-power-usage-is-making-phones-overheat-in-warm-weather/
As reported by ExtremeTech, the brand new 5G network is running into a major snag with mobile devices as Qualcomm 5G modems literally cannot handle the heat. After just a few minutes of use they’re going into thermal shutdown and falling back to measly 4G data rates. Reports by both …read more (https://hackaday.com/2019/07/21/5g-power-usage-is-making-phones-overheat-in-warm-weather/)
Hydraulic Bench Vise a Masterpiece of Scrap Metal and Angle Grinding
https://hackaday.com/2019/07/22/hydraulic-bench-vise-a-masterpiece-of-scrap-metal-and-angle-grinding/
For most of us, a vise is the sort of thing you clamp onto the edge of a workbench and crank down by hand. It might even be made of plastic, depending on the kind of work you find yourself doing with it. But it’s safe to say that [WorkshopFromScratch] …read more (https://hackaday.com/2019/07/22/hydraulic-bench-vise-a-masterpiece-of-scrap-metal-and-angle-grinding/)
https://hackaday.com/2019/07/22/hydraulic-bench-vise-a-masterpiece-of-scrap-metal-and-angle-grinding/
For most of us, a vise is the sort of thing you clamp onto the edge of a workbench and crank down by hand. It might even be made of plastic, depending on the kind of work you find yourself doing with it. But it’s safe to say that [WorkshopFromScratch] …read more (https://hackaday.com/2019/07/22/hydraulic-bench-vise-a-masterpiece-of-scrap-metal-and-angle-grinding/)
Weather Station Can Rock You Like A Hurricane
https://hackaday.com/2019/07/22/weather-station-can-rock-you-like-a-hurricane/
People love to talk about the weather. It’s the perfect small talk, whether you’re trying to start a conversation or keep one going by avoiding an awkward silence. In the same fashion, weather stations are an ideal starting point for any sort of sensor-related project ideas. You get to familiarizing …read more (https://hackaday.com/2019/07/22/weather-station-can-rock-you-like-a-hurricane/)
https://hackaday.com/2019/07/22/weather-station-can-rock-you-like-a-hurricane/
People love to talk about the weather. It’s the perfect small talk, whether you’re trying to start a conversation or keep one going by avoiding an awkward silence. In the same fashion, weather stations are an ideal starting point for any sort of sensor-related project ideas. You get to familiarizing …read more (https://hackaday.com/2019/07/22/weather-station-can-rock-you-like-a-hurricane/)
Forget the Walkman: It’s the Headphones
https://hackaday.com/2019/07/22/forget-the-walkman-its-the-headphones/
Forty years ago this month, a product was launched in Japan that would have such a huge impact on the consumer electronics market that we are still using its descendants today. The story goes that one of the Sony founders would listen to music while traveling for the business, and …read more (https://hackaday.com/2019/07/22/forget-the-walkman-its-the-headphones/)
https://hackaday.com/2019/07/22/forget-the-walkman-its-the-headphones/
Forty years ago this month, a product was launched in Japan that would have such a huge impact on the consumer electronics market that we are still using its descendants today. The story goes that one of the Sony founders would listen to music while traveling for the business, and …read more (https://hackaday.com/2019/07/22/forget-the-walkman-its-the-headphones/)
Watch Earthquake Roll Across A Continent In Seismograph Visualization Video
https://hackaday.com/2019/07/22/watch-earthquake-roll-across-a-continent-in-seismograph-visualization-video/
If your only exposure to seismologists at work is through film and television, you can be forgiven for thinking they still lay out rolls of paper to examine lines of ink under a magnifying glass. The reality is far more interesting in a field that has eagerly adopted all available …read more (https://hackaday.com/2019/07/22/watch-earthquake-roll-across-a-continent-in-seismograph-visualization-video/)
https://hackaday.com/2019/07/22/watch-earthquake-roll-across-a-continent-in-seismograph-visualization-video/
If your only exposure to seismologists at work is through film and television, you can be forgiven for thinking they still lay out rolls of paper to examine lines of ink under a magnifying glass. The reality is far more interesting in a field that has eagerly adopted all available …read more (https://hackaday.com/2019/07/22/watch-earthquake-roll-across-a-continent-in-seismograph-visualization-video/)