Developing Guidelines for Sustainable Spaceflight
https://hackaday.com/2019/10/22/developing-guidelines-for-sustainable-spaceflight/
In the early days of spaceflight, when only the governments of the United States and the Soviet Union had the ability to put an object into orbit, even the most fanciful of futurists would have had a hard time believing that commercial entities would one day be launching sixty satellites …read more (https://hackaday.com/2019/10/22/developing-guidelines-for-sustainable-spaceflight/)
https://hackaday.com/2019/10/22/developing-guidelines-for-sustainable-spaceflight/
In the early days of spaceflight, when only the governments of the United States and the Soviet Union had the ability to put an object into orbit, even the most fanciful of futurists would have had a hard time believing that commercial entities would one day be launching sixty satellites …read more (https://hackaday.com/2019/10/22/developing-guidelines-for-sustainable-spaceflight/)
Creepy Halloween Doll Might Make You Betsy Wetsy
https://hackaday.com/2019/10/22/creepy-halloween-doll-might-make-you-betsy-wetsy/
If you want to terrify your neighborhood this Halloween, you might go for the old standbys like skeletons or zombies. But you don’t have to go gory to find glory. Consider the talking doll. Those things are creepy enough already, right? Well, [cabuu] says no, the doll should be animated …read more (https://hackaday.com/2019/10/22/creepy-halloween-doll-might-make-you-betsy-wetsy/)
https://hackaday.com/2019/10/22/creepy-halloween-doll-might-make-you-betsy-wetsy/
If you want to terrify your neighborhood this Halloween, you might go for the old standbys like skeletons or zombies. But you don’t have to go gory to find glory. Consider the talking doll. Those things are creepy enough already, right? Well, [cabuu] says no, the doll should be animated …read more (https://hackaday.com/2019/10/22/creepy-halloween-doll-might-make-you-betsy-wetsy/)
Grind Your Welds With Pride, If That’s The Way You Do It
https://hackaday.com/2019/10/22/grind-your-welds-with-pride-if-thats-the-way-you-do-it/
To grind or not to grind? What a question! It all depends on what you’re really trying to show, and in the case of welded joints, I often want to prove the integrity of the weld.
Recently, I wrote a piece in which I talked about my cheap inverter welder …read more (https://hackaday.com/2019/10/22/grind-your-welds-with-pride-if-thats-the-way-you-do-it/)
https://hackaday.com/2019/10/22/grind-your-welds-with-pride-if-thats-the-way-you-do-it/
To grind or not to grind? What a question! It all depends on what you’re really trying to show, and in the case of welded joints, I often want to prove the integrity of the weld.
Recently, I wrote a piece in which I talked about my cheap inverter welder …read more (https://hackaday.com/2019/10/22/grind-your-welds-with-pride-if-thats-the-way-you-do-it/)
Building A Laser Head With High Speed, High Resolution
https://hackaday.com/2019/10/22/building-a-laser-head-with-high-speed-high-resolution/
Typically, when it comes to scanning a laser, it’s done with galvos or a rotating mirror assembly. However, these methods can be slow and cumbersome, or restricted due to existing patents. [Rick] aimed to find an alternative solution with the Hexastorm project, using a rotating prism to build a high …read more (https://hackaday.com/2019/10/22/building-a-laser-head-with-high-speed-high-resolution/)
https://hackaday.com/2019/10/22/building-a-laser-head-with-high-speed-high-resolution/
Typically, when it comes to scanning a laser, it’s done with galvos or a rotating mirror assembly. However, these methods can be slow and cumbersome, or restricted due to existing patents. [Rick] aimed to find an alternative solution with the Hexastorm project, using a rotating prism to build a high …read more (https://hackaday.com/2019/10/22/building-a-laser-head-with-high-speed-high-resolution/)
A Miniature Radio Telescope in Every Backyard
https://hackaday.com/2019/10/22/a-miniature-radio-telescope-in-every-backyard/
You probably wouldn’t expect to see somebody making astronomical observations during a cloudy day in the center of a dense urban area, but that’s exactly what was happening at the recent 2019 Philadelphia Mini Maker Faire. Professor James Aguirre of the University of Pennsylvania was there demonstrating the particularly compact …read more (https://hackaday.com/2019/10/22/a-miniature-radio-telescope-in-every-backyard/)
https://hackaday.com/2019/10/22/a-miniature-radio-telescope-in-every-backyard/
You probably wouldn’t expect to see somebody making astronomical observations during a cloudy day in the center of a dense urban area, but that’s exactly what was happening at the recent 2019 Philadelphia Mini Maker Faire. Professor James Aguirre of the University of Pennsylvania was there demonstrating the particularly compact …read more (https://hackaday.com/2019/10/22/a-miniature-radio-telescope-in-every-backyard/)
Steering By Touch And Haptic Feedback
https://hackaday.com/2019/10/22/steering-by-touch-and-haptic-feedback/
Scribble is a haptic interface lets you draw your way through traffic. In an environment where fully automated vehicles are becoming the expectation for the next step in transportation, Scribble provides a friendly alternative that allows you to guide your car around, while the automation makes decisions on how to …read more (https://hackaday.com/2019/10/22/steering-by-touch-and-haptic-feedback/)
https://hackaday.com/2019/10/22/steering-by-touch-and-haptic-feedback/
Scribble is a haptic interface lets you draw your way through traffic. In an environment where fully automated vehicles are becoming the expectation for the next step in transportation, Scribble provides a friendly alternative that allows you to guide your car around, while the automation makes decisions on how to …read more (https://hackaday.com/2019/10/22/steering-by-touch-and-haptic-feedback/)
Advertise Your Conference Schedule Via SSID
https://hackaday.com/2019/10/22/advertise-your-conference-schedule-via-ssid/
Whether it’s been a Python script running on a Linux box or an ESP8266, abusing using WiFi SSIDs to convey messages is hardly a new trick. But for DerbyCon 2019, [vgrsec] wanted to do put together something a little unique. Dare we say, even useful. Rather than broadcast out SSID …read more (https://hackaday.com/2019/10/22/advertise-your-conference-schedule-via-ssid/)
https://hackaday.com/2019/10/22/advertise-your-conference-schedule-via-ssid/
Whether it’s been a Python script running on a Linux box or an ESP8266, abusing using WiFi SSIDs to convey messages is hardly a new trick. But for DerbyCon 2019, [vgrsec] wanted to do put together something a little unique. Dare we say, even useful. Rather than broadcast out SSID …read more (https://hackaday.com/2019/10/22/advertise-your-conference-schedule-via-ssid/)
The Future’s So Bright, I Gotta Wear LCDs
https://hackaday.com/2019/10/22/the-futures-so-bright-i-gotta-wear-lcds/
Whether it was rays from the Sun that made a 150 million kilometer trip just to ruin your day or somebody’s unreasonably bright aftermarket headlights, at some point or another we’ve all experienced the discomfort of bright spots in our eyes. But short of wearing welder’s goggles all the time, …read more (https://hackaday.com/2019/10/22/the-futures-so-bright-i-gotta-wear-lcds/)
https://hackaday.com/2019/10/22/the-futures-so-bright-i-gotta-wear-lcds/
Whether it was rays from the Sun that made a 150 million kilometer trip just to ruin your day or somebody’s unreasonably bright aftermarket headlights, at some point or another we’ve all experienced the discomfort of bright spots in our eyes. But short of wearing welder’s goggles all the time, …read more (https://hackaday.com/2019/10/22/the-futures-so-bright-i-gotta-wear-lcds/)
Big Beautiful Vintage Computers, and Where To Find Them
https://hackaday.com/2019/10/23/big-beautiful-vintage-computers-and-where-to-find-them/
[Ken Shirriff] recently shared some pictures and a writeup from his visit to the Large Scale Systems Museum, a remarkable private collection of mainframes and other computers from the 1970s to the 1990s. Housed in a town outside Pittsburgh, it contains a huge variety of specimens including IBM mainframes and …read more (https://hackaday.com/2019/10/23/big-beautiful-vintage-computers-and-where-to-find-them/)
https://hackaday.com/2019/10/23/big-beautiful-vintage-computers-and-where-to-find-them/
[Ken Shirriff] recently shared some pictures and a writeup from his visit to the Large Scale Systems Museum, a remarkable private collection of mainframes and other computers from the 1970s to the 1990s. Housed in a town outside Pittsburgh, it contains a huge variety of specimens including IBM mainframes and …read more (https://hackaday.com/2019/10/23/big-beautiful-vintage-computers-and-where-to-find-them/)
Perler Printer Pushes Pixel-Art like No Sprite Artist Could
https://hackaday.com/2019/10/23/perler-printer-pushes-pixel-art-like-no-sprite-artist-could/
There’s something oddly soothing about the practice of laying down Perler Beads on a casual weekend to make your favorite classic Nintendo characters. But seriously, why use our grubby hands like a caveman when we could leverage a machine to do the heavy-lifting for us? That’s exactly what [knezuld11] did! …read more (https://hackaday.com/2019/10/23/perler-printer-pushes-pixel-art-like-no-sprite-artist-could/)
https://hackaday.com/2019/10/23/perler-printer-pushes-pixel-art-like-no-sprite-artist-could/
There’s something oddly soothing about the practice of laying down Perler Beads on a casual weekend to make your favorite classic Nintendo characters. But seriously, why use our grubby hands like a caveman when we could leverage a machine to do the heavy-lifting for us? That’s exactly what [knezuld11] did! …read more (https://hackaday.com/2019/10/23/perler-printer-pushes-pixel-art-like-no-sprite-artist-could/)
The Worst Greenhouse Gasses You Haven’t Heard Of
https://hackaday.com/2019/10/23/the-worst-greenhouse-gasses-you-havent-heard-of/
Carbon dioxide has long drawn the ire of an environmentally-conscious humanity. Released from combustion of fossil fuels, levels of CO2 in the atmosphere are higher now than at any point in the past 400,000 years. With the warming effects this has on the global environment, bringing these numbers down …read more (https://hackaday.com/2019/10/23/the-worst-greenhouse-gasses-you-havent-heard-of/)
https://hackaday.com/2019/10/23/the-worst-greenhouse-gasses-you-havent-heard-of/
Carbon dioxide has long drawn the ire of an environmentally-conscious humanity. Released from combustion of fossil fuels, levels of CO2 in the atmosphere are higher now than at any point in the past 400,000 years. With the warming effects this has on the global environment, bringing these numbers down …read more (https://hackaday.com/2019/10/23/the-worst-greenhouse-gasses-you-havent-heard-of/)
Creating a Bode Analyzer from a Microcontroller
https://hackaday.com/2019/10/23/creating-a-bode-analyzer-from-a-microcontroller/
Electrical engineers will recognize the Bode plot as a plot of the frequency response of a system. It displays the frequency on the x-axis and the phase (in degrees) or magnitude (in dB) on the y-axis, making it helpful for understanding a circuit or transfer function in frequency domain analysis. …read more (https://hackaday.com/2019/10/23/creating-a-bode-analyzer-from-a-microcontroller/)
https://hackaday.com/2019/10/23/creating-a-bode-analyzer-from-a-microcontroller/
Electrical engineers will recognize the Bode plot as a plot of the frequency response of a system. It displays the frequency on the x-axis and the phase (in degrees) or magnitude (in dB) on the y-axis, making it helpful for understanding a circuit or transfer function in frequency domain analysis. …read more (https://hackaday.com/2019/10/23/creating-a-bode-analyzer-from-a-microcontroller/)
Arm Allows Custom Instructions
https://hackaday.com/2019/10/23/arm-allows-custom-instructions/
We’re surrounded by ARM processors, which enjoy a commanding foothold in the consumer market, especially with portable electronics. However, Arm Holdings has never focused its business model on manufacturing chips, instead licensing its CPUs to others who make the physical devices. There is a bit of a tightrope to walk, …read more (https://hackaday.com/2019/10/23/arm-allows-custom-instructions/)
https://hackaday.com/2019/10/23/arm-allows-custom-instructions/
We’re surrounded by ARM processors, which enjoy a commanding foothold in the consumer market, especially with portable electronics. However, Arm Holdings has never focused its business model on manufacturing chips, instead licensing its CPUs to others who make the physical devices. There is a bit of a tightrope to walk, …read more (https://hackaday.com/2019/10/23/arm-allows-custom-instructions/)
Daisy Chained Seven Segment Art Display
https://hackaday.com/2019/10/23/daisy-chained-seven-segment-art-display/
This seven segment art display makes use of a 81 seven segment red common cathode LED displays. The LEDs are arranged onto 100x100mm boards that each contain an Arduino Nano and 9 seven segment displays, daisy chained through three-pin headers located on the sides of the boards. The pins (power, …read more (https://hackaday.com/2019/10/23/daisy-chained-seven-segment-art-display/)
https://hackaday.com/2019/10/23/daisy-chained-seven-segment-art-display/
This seven segment art display makes use of a 81 seven segment red common cathode LED displays. The LEDs are arranged onto 100x100mm boards that each contain an Arduino Nano and 9 seven segment displays, daisy chained through three-pin headers located on the sides of the boards. The pins (power, …read more (https://hackaday.com/2019/10/23/daisy-chained-seven-segment-art-display/)
Build This Handy Leak Detector For $1.02
https://hackaday.com/2019/10/23/build-this-handy-leak-detector-for-1-02/
You’ve probably noticed that modern life has become rather complicated, and the projects we cover here on Hackaday have not been immune to the march of progress. We certainly aren’t complaining, but we’ll admit to the occasional wistful daydream of returning to the days when the front page of Hackaday …read more (https://hackaday.com/2019/10/23/build-this-handy-leak-detector-for-1-02/)
https://hackaday.com/2019/10/23/build-this-handy-leak-detector-for-1-02/
You’ve probably noticed that modern life has become rather complicated, and the projects we cover here on Hackaday have not been immune to the march of progress. We certainly aren’t complaining, but we’ll admit to the occasional wistful daydream of returning to the days when the front page of Hackaday …read more (https://hackaday.com/2019/10/23/build-this-handy-leak-detector-for-1-02/)
A Double-Hybrid Mini-Lathe, From Scratch
https://hackaday.com/2019/10/23/a-double-hybrid-mini-lathe-from-scratch/
It’s a treadle lathe! No, it’s a power lathe! It’s a wood lathe! No, it’s a metal lathe! Actually, [Uri Tuchman]’s homebrew lathe is all of the above, and it looks pretty snazzy too.
To say that [Uri]’s creations are quirky is a bit of an understatement – birds, crustaceans, …read more (https://hackaday.com/2019/10/23/a-double-hybrid-mini-lathe-from-scratch/)
https://hackaday.com/2019/10/23/a-double-hybrid-mini-lathe-from-scratch/
It’s a treadle lathe! No, it’s a power lathe! It’s a wood lathe! No, it’s a metal lathe! Actually, [Uri Tuchman]’s homebrew lathe is all of the above, and it looks pretty snazzy too.
To say that [Uri]’s creations are quirky is a bit of an understatement – birds, crustaceans, …read more (https://hackaday.com/2019/10/23/a-double-hybrid-mini-lathe-from-scratch/)
Top Off A Dry Electrolytic
https://hackaday.com/2019/10/23/top-off-a-dry-electrolytic/
Making a capacitor is pretty easy. Just get two conductors close together. The bigger area you can get and the closer you can get them, the bigger the capacitor you can make. [BigClive] found some fake capacitors that were supposed to be very high value, but weren’t. Taking them apart …read more (https://hackaday.com/2019/10/23/top-off-a-dry-electrolytic/)
https://hackaday.com/2019/10/23/top-off-a-dry-electrolytic/
Making a capacitor is pretty easy. Just get two conductors close together. The bigger area you can get and the closer you can get them, the bigger the capacitor you can make. [BigClive] found some fake capacitors that were supposed to be very high value, but weren’t. Taking them apart …read more (https://hackaday.com/2019/10/23/top-off-a-dry-electrolytic/)
LED Skirt Is Stealth By Day, Party By Night
https://hackaday.com/2019/10/23/led-skirt-is-stealth-by-day-party-by-night/
Versatility is always a boon in any outfit. [Mikaela Holmes] wanted to create a skirt that could be unassuming by day, but be the life of the party when the lights go down. Her Day-To-Night Light Skirt achieves just that!
The build is one that should be achievable by anyone …read more (https://hackaday.com/2019/10/23/led-skirt-is-stealth-by-day-party-by-night/)
https://hackaday.com/2019/10/23/led-skirt-is-stealth-by-day-party-by-night/
Versatility is always a boon in any outfit. [Mikaela Holmes] wanted to create a skirt that could be unassuming by day, but be the life of the party when the lights go down. Her Day-To-Night Light Skirt achieves just that!
The build is one that should be achievable by anyone …read more (https://hackaday.com/2019/10/23/led-skirt-is-stealth-by-day-party-by-night/)
Retro Hardware Plots Again Thanks to Grbl and ESP32
https://hackaday.com/2019/10/24/retro-hardware-plots-again-thanks-to-grbl-and-esp32/
When it comes to building a new CNC machine, you’ve got a wide world of controller boards to choose from. Whether you’re building a 3D-printer or a CNC plasma cutter, chances are good you’ll find a controller that fits your needs and your budget. Not so much, though, when you …read more (https://hackaday.com/2019/10/24/retro-hardware-plots-again-thanks-to-grbl-and-esp32/)
https://hackaday.com/2019/10/24/retro-hardware-plots-again-thanks-to-grbl-and-esp32/
When it comes to building a new CNC machine, you’ve got a wide world of controller boards to choose from. Whether you’re building a 3D-printer or a CNC plasma cutter, chances are good you’ll find a controller that fits your needs and your budget. Not so much, though, when you …read more (https://hackaday.com/2019/10/24/retro-hardware-plots-again-thanks-to-grbl-and-esp32/)
Student-Built Rocket Engine Packs a Punch
https://hackaday.com/2019/10/24/student-built-rocket-engine-packs-a-punch/
A group of students at Boston University recently made a successful test of a powerful rocket engine intended for 100km suborbital flights. Known as the Iron Lotus (although made out of mild steel rather than iron), this test allowed them to perfect the timing and perfect their engine design (also …read more (https://hackaday.com/2019/10/24/student-built-rocket-engine-packs-a-punch/)
https://hackaday.com/2019/10/24/student-built-rocket-engine-packs-a-punch/
A group of students at Boston University recently made a successful test of a powerful rocket engine intended for 100km suborbital flights. Known as the Iron Lotus (although made out of mild steel rather than iron), this test allowed them to perfect the timing and perfect their engine design (also …read more (https://hackaday.com/2019/10/24/student-built-rocket-engine-packs-a-punch/)