Two Vintage Calculators In One
https://hackaday.com/2019/11/13/two-vintage-calculators-in-one/
The FPGA revolution that occurred within the past few decades was a boon to many people interested in “antique” electronics. The devices “wire together” logic elements as needed rather than emulating chips completely in a software layer, which makes them uniquely suited for replicating chips that are rare, no longer …read more (https://hackaday.com/2019/11/13/two-vintage-calculators-in-one/)
https://hackaday.com/2019/11/13/two-vintage-calculators-in-one/
The FPGA revolution that occurred within the past few decades was a boon to many people interested in “antique” electronics. The devices “wire together” logic elements as needed rather than emulating chips completely in a software layer, which makes them uniquely suited for replicating chips that are rare, no longer …read more (https://hackaday.com/2019/11/13/two-vintage-calculators-in-one/)
Upgrade Board Turns Typewriter into a Teletype
https://hackaday.com/2019/11/14/upgrade-board-turns-typewriter-into-a-teletype/
It may come as little surprise to find that Hackaday does not often play host to typewriter projects. While these iconic machines have their own particular charm, they generally don’t allow for much in the way of hardware modification. But then the IBM Wheelwriter 1000 isn’t exactly a traditional typewriter, …read more (https://hackaday.com/2019/11/14/upgrade-board-turns-typewriter-into-a-teletype/)
https://hackaday.com/2019/11/14/upgrade-board-turns-typewriter-into-a-teletype/
It may come as little surprise to find that Hackaday does not often play host to typewriter projects. While these iconic machines have their own particular charm, they generally don’t allow for much in the way of hardware modification. But then the IBM Wheelwriter 1000 isn’t exactly a traditional typewriter, …read more (https://hackaday.com/2019/11/14/upgrade-board-turns-typewriter-into-a-teletype/)
Aging Alcohol In 30 Minutes
https://hackaday.com/2019/11/14/aging-alcohol-in-30-minutes/
Many alcoholic beverages are aged in barrels for long periods of time. The aim is to impart flavors from the wood of the barrel into the liquid, and allow a whole host of chemical reactions to happen, changing the character of the taste. However, this takes time, and time is …read more (https://hackaday.com/2019/11/14/aging-alcohol-in-30-minutes/)
https://hackaday.com/2019/11/14/aging-alcohol-in-30-minutes/
Many alcoholic beverages are aged in barrels for long periods of time. The aim is to impart flavors from the wood of the barrel into the liquid, and allow a whole host of chemical reactions to happen, changing the character of the taste. However, this takes time, and time is …read more (https://hackaday.com/2019/11/14/aging-alcohol-in-30-minutes/)
Jubilee: A Toolchanging Homage to 3D Printer Hackers Everywhere
https://hackaday.com/2019/11/14/jubilee-a-toolchanging-homage-to-3d-printer-hackers-everywhere/
I admit that I’m late to the 3D printing game. While I just picked up my first printer in 2018, the rest of us have been oozing out beautiful prints for over a decade. And in that time we’ve seen many people reimagine the hardware for mischief besides just printing …read more (https://hackaday.com/2019/11/14/jubilee-a-toolchanging-homage-to-3d-printer-hackers-everywhere/)
https://hackaday.com/2019/11/14/jubilee-a-toolchanging-homage-to-3d-printer-hackers-everywhere/
I admit that I’m late to the 3D printing game. While I just picked up my first printer in 2018, the rest of us have been oozing out beautiful prints for over a decade. And in that time we’ve seen many people reimagine the hardware for mischief besides just printing …read more (https://hackaday.com/2019/11/14/jubilee-a-toolchanging-homage-to-3d-printer-hackers-everywhere/)
Ethernet, Over DC Power
https://hackaday.com/2019/11/14/ethernet-over-dc-power/
We’re used to extending our network connections and being no longer constrained in our use of Ethernet by proximity to a switch or hub. Our houses routinely contain wireless networks, and of course powerline-Ethernet units passing data over our mains wiring. [Peter Franck] had a similar problem but without the …read more (https://hackaday.com/2019/11/14/ethernet-over-dc-power/)
https://hackaday.com/2019/11/14/ethernet-over-dc-power/
We’re used to extending our network connections and being no longer constrained in our use of Ethernet by proximity to a switch or hub. Our houses routinely contain wireless networks, and of course powerline-Ethernet units passing data over our mains wiring. [Peter Franck] had a similar problem but without the …read more (https://hackaday.com/2019/11/14/ethernet-over-dc-power/)
Best Buy’s IoT Goes Dark, Leaving Some “Smart” Products Dumbfounded
https://hackaday.com/2019/11/14/best-buys-iot-goes-dark-leaving-some-smart-products-dumbfounded/
Bad news if you bought several Insignia-branded smart devices from Best Buy. The company has decided to shut down the back end systems that make them work — or at least work as a smart device. On the chopping block are smart outlets, switches, a security camera, and an upright …read more (https://hackaday.com/2019/11/14/best-buys-iot-goes-dark-leaving-some-smart-products-dumbfounded/)
https://hackaday.com/2019/11/14/best-buys-iot-goes-dark-leaving-some-smart-products-dumbfounded/
Bad news if you bought several Insignia-branded smart devices from Best Buy. The company has decided to shut down the back end systems that make them work — or at least work as a smart device. On the chopping block are smart outlets, switches, a security camera, and an upright …read more (https://hackaday.com/2019/11/14/best-buys-iot-goes-dark-leaving-some-smart-products-dumbfounded/)
Detecting Water Before it’s Too Late
https://hackaday.com/2019/11/14/detecting-water-before-its-too-late/
[mcu_nerd] is like any engineer, which is why his problem of an occasionally leaky water heater sure looks like a research project with no end in sight. Sure there’s probably a commercial product out there that can be had for half the cost and a few clicks of the mouse, …read more (https://hackaday.com/2019/11/14/detecting-water-before-its-too-late/)
https://hackaday.com/2019/11/14/detecting-water-before-its-too-late/
[mcu_nerd] is like any engineer, which is why his problem of an occasionally leaky water heater sure looks like a research project with no end in sight. Sure there’s probably a commercial product out there that can be had for half the cost and a few clicks of the mouse, …read more (https://hackaday.com/2019/11/14/detecting-water-before-its-too-late/)
5 Kilowatts In A 3D Printed Jet Boat
https://hackaday.com/2019/11/14/5-kilowatts-in-a-3d-printed-jet-boat/
Radio control projects used to be made of materials such as metal or wood, and involve lots of hand crafted parts. That’s still one way to go about things, but 3D printing has become a popular tool in recent years. [RCLifeOn] has been working on a 3D printed jet boat, …read more (https://hackaday.com/2019/11/14/5-kilowatts-in-a-3d-printed-jet-boat/)
https://hackaday.com/2019/11/14/5-kilowatts-in-a-3d-printed-jet-boat/
Radio control projects used to be made of materials such as metal or wood, and involve lots of hand crafted parts. That’s still one way to go about things, but 3D printing has become a popular tool in recent years. [RCLifeOn] has been working on a 3D printed jet boat, …read more (https://hackaday.com/2019/11/14/5-kilowatts-in-a-3d-printed-jet-boat/)
Giant Analog CO2 Meter Sweeps Away Doubt
https://hackaday.com/2019/11/14/giant-analog-co2-meter-sweeps-away-doubt/
Most of us are aware that trees turn CO₂ into oxygen, but we’d venture to guess that many people’s knowledge of this gas ends there. Is it feast or famine out there for the trees? Who can say? We admire [rabbitcreek]’s commitment to citizen science because he’s so focused on …read more (https://hackaday.com/2019/11/14/giant-analog-co2-meter-sweeps-away-doubt/)
https://hackaday.com/2019/11/14/giant-analog-co2-meter-sweeps-away-doubt/
Most of us are aware that trees turn CO₂ into oxygen, but we’d venture to guess that many people’s knowledge of this gas ends there. Is it feast or famine out there for the trees? Who can say? We admire [rabbitcreek]’s commitment to citizen science because he’s so focused on …read more (https://hackaday.com/2019/11/14/giant-analog-co2-meter-sweeps-away-doubt/)
Audio Processing in Rust
https://hackaday.com/2019/11/14/audio-processing-in-rust/
[Michael] volunteers with emergency services, and sometimes has to monitor radio traffic. Sometimes there’s a lot to review, and to make it easier he wrote a noise gate — think of it as a squelch — to break apart recorded audio into parts. Rust has been gaining popularity for writing …read more (https://hackaday.com/2019/11/14/audio-processing-in-rust/)
https://hackaday.com/2019/11/14/audio-processing-in-rust/
[Michael] volunteers with emergency services, and sometimes has to monitor radio traffic. Sometimes there’s a lot to review, and to make it easier he wrote a noise gate — think of it as a squelch — to break apart recorded audio into parts. Rust has been gaining popularity for writing …read more (https://hackaday.com/2019/11/14/audio-processing-in-rust/)
Quick And Dirty Digital Conversion For Analog SLR
https://hackaday.com/2019/11/14/quick-and-dirty-digital-conversion-for-analog-slr/
The unarguable benefits of digital photography has rendered the analog SLR obsolete for most purposes. This means that a wide selection of cameras and lenses are available on the second hand market for pennies on the dollar, making them ripe targets for hacking. [drtonis] decided to experiment with a quick …read more (https://hackaday.com/2019/11/14/quick-and-dirty-digital-conversion-for-analog-slr/)
https://hackaday.com/2019/11/14/quick-and-dirty-digital-conversion-for-analog-slr/
The unarguable benefits of digital photography has rendered the analog SLR obsolete for most purposes. This means that a wide selection of cameras and lenses are available on the second hand market for pennies on the dollar, making them ripe targets for hacking. [drtonis] decided to experiment with a quick …read more (https://hackaday.com/2019/11/14/quick-and-dirty-digital-conversion-for-analog-slr/)
A Radio for the Apocalypse
https://hackaday.com/2019/11/15/a-radio-for-the-apocalypse/
There’s been a spate of apocalypse related articles over the last few weeks, but when I saw an AM radio made from a hand-wound coil and an oxidized British penny, I couldn’t help but be impressed. We’ve covered foxhole radios, stereotypical radios that are cobbled together from found parts during …read more (https://hackaday.com/2019/11/15/a-radio-for-the-apocalypse/)
https://hackaday.com/2019/11/15/a-radio-for-the-apocalypse/
There’s been a spate of apocalypse related articles over the last few weeks, but when I saw an AM radio made from a hand-wound coil and an oxidized British penny, I couldn’t help but be impressed. We’ve covered foxhole radios, stereotypical radios that are cobbled together from found parts during …read more (https://hackaday.com/2019/11/15/a-radio-for-the-apocalypse/)
Credit Card Skimmers Evolve – Shimmers Are Here
https://hackaday.com/2019/11/15/credit-card-skimmers-evolve-shimmers-are-here/
Credit cards are loaded with security features, but the game of cat and mouse goes on. Nefarious syndicates continue to develop technology to steal data in new and innovate ways. After SparkFun did a teardown on some illicit hardware, they were visited by local law enforcement, who requested their help …read more (https://hackaday.com/2019/11/15/credit-card-skimmers-evolve-shimmers-are-here/)
https://hackaday.com/2019/11/15/credit-card-skimmers-evolve-shimmers-are-here/
Credit cards are loaded with security features, but the game of cat and mouse goes on. Nefarious syndicates continue to develop technology to steal data in new and innovate ways. After SparkFun did a teardown on some illicit hardware, they were visited by local law enforcement, who requested their help …read more (https://hackaday.com/2019/11/15/credit-card-skimmers-evolve-shimmers-are-here/)
This Week in Security: Fuzzing Fixes, Foul Fonts, TPM Timing Attacks, and More!
https://hackaday.com/2019/11/15/this-week-in-security-fuzzing-fixes-foul-fonts-tpm-timing-attacks-and-more/
An issue was discovered in libarchive through Google’s ClusterFuzz project. Libarchive is a compression and decompression library, widely used in utilities. The issue here is how the library recovers from a malformed archive. Hitting an invalid header causes the memory in use to be freed. The problem is that it’s …read more (https://hackaday.com/2019/11/15/this-week-in-security-fuzzing-fixes-foul-fonts-tpm-timing-attacks-and-more/)
https://hackaday.com/2019/11/15/this-week-in-security-fuzzing-fixes-foul-fonts-tpm-timing-attacks-and-more/
An issue was discovered in libarchive through Google’s ClusterFuzz project. Libarchive is a compression and decompression library, widely used in utilities. The issue here is how the library recovers from a malformed archive. Hitting an invalid header causes the memory in use to be freed. The problem is that it’s …read more (https://hackaday.com/2019/11/15/this-week-in-security-fuzzing-fixes-foul-fonts-tpm-timing-attacks-and-more/)
Needling Your Projects: 3D Printed PCB Probing Jig Uses Accupuncture Needles
https://hackaday.com/2019/11/15/needling-your-projects-3d-printed-pcb-probing-jig-uses-accupuncture-needles/
Trying to probe a modern electronic circuit with tiny SMD components, without letting the magic smoke escape in the process, can be quite a challenge. Especially since we hackers have not yet developed the number of appendages required to hold 3 different probes in place while operating both an oscilloscope …read more (https://hackaday.com/2019/11/15/needling-your-projects-3d-printed-pcb-probing-jig-uses-accupuncture-needles/)
https://hackaday.com/2019/11/15/needling-your-projects-3d-printed-pcb-probing-jig-uses-accupuncture-needles/
Trying to probe a modern electronic circuit with tiny SMD components, without letting the magic smoke escape in the process, can be quite a challenge. Especially since we hackers have not yet developed the number of appendages required to hold 3 different probes in place while operating both an oscilloscope …read more (https://hackaday.com/2019/11/15/needling-your-projects-3d-printed-pcb-probing-jig-uses-accupuncture-needles/)
DSP Spreadsheet: IQ Diagrams
https://hackaday.com/2019/11/15/dsp-spreadsheet-iq-diagrams/
In previous installments of DSP Spreadsheet, we’ve looked at generating signals, mixing them, and filtering them. If you start trying to work with DSP, though, you’ll find a topic that always rears its head: IQ signals. It turns out, these aren’t as hard as they appear at first and, as …read more (https://hackaday.com/2019/11/15/dsp-spreadsheet-iq-diagrams/)
https://hackaday.com/2019/11/15/dsp-spreadsheet-iq-diagrams/
In previous installments of DSP Spreadsheet, we’ve looked at generating signals, mixing them, and filtering them. If you start trying to work with DSP, though, you’ll find a topic that always rears its head: IQ signals. It turns out, these aren’t as hard as they appear at first and, as …read more (https://hackaday.com/2019/11/15/dsp-spreadsheet-iq-diagrams/)
Finally Your Air Drumming Has an Outlet
https://hackaday.com/2019/11/15/finally-your-air-drumming-has-an-outlet/
Two engineering students are hard at work on this air drum which they hope will help disabled people and people in nursing homes. Though, we think it just looks fun!
Each board is its own module consisting of the electronics and 3D printed cases. The modules each contain an arduino …read more (https://hackaday.com/2019/11/15/finally-your-air-drumming-has-an-outlet/)
https://hackaday.com/2019/11/15/finally-your-air-drumming-has-an-outlet/
Two engineering students are hard at work on this air drum which they hope will help disabled people and people in nursing homes. Though, we think it just looks fun!
Each board is its own module consisting of the electronics and 3D printed cases. The modules each contain an arduino …read more (https://hackaday.com/2019/11/15/finally-your-air-drumming-has-an-outlet/)
A Self-Expanding PWM Driver
https://hackaday.com/2019/11/15/a-self-expanding-pwm-driver/
For smaller microcontrollers, having enough outputs for the job is sometimes a challenge. A common solution is to do some sort of multiplexing with the available outputs or perhaps something more advanced such as Charlieplexing, but another good option is to use a specialized driver board. What’s even better is …read more (https://hackaday.com/2019/11/15/a-self-expanding-pwm-driver/)
https://hackaday.com/2019/11/15/a-self-expanding-pwm-driver/
For smaller microcontrollers, having enough outputs for the job is sometimes a challenge. A common solution is to do some sort of multiplexing with the available outputs or perhaps something more advanced such as Charlieplexing, but another good option is to use a specialized driver board. What’s even better is …read more (https://hackaday.com/2019/11/15/a-self-expanding-pwm-driver/)
Music Box Paper-Punching Machine Settles The Score
https://hackaday.com/2019/11/15/music-box-paper-punching-machine-settles-the-score/
As soon as [pashiran] laid eyes on his first hand-cranked music box, he knew he was in love. Then, he started punching the holes for his first ditty. As the repetitive stress of punching heated up his arm, his love cooled a bit. Annealed by the ups and downs of …read more (https://hackaday.com/2019/11/15/music-box-paper-punching-machine-settles-the-score/)
https://hackaday.com/2019/11/15/music-box-paper-punching-machine-settles-the-score/
As soon as [pashiran] laid eyes on his first hand-cranked music box, he knew he was in love. Then, he started punching the holes for his first ditty. As the repetitive stress of punching heated up his arm, his love cooled a bit. Annealed by the ups and downs of …read more (https://hackaday.com/2019/11/15/music-box-paper-punching-machine-settles-the-score/)
Double Pendulum Uses Custom Slip Rings
https://hackaday.com/2019/11/15/double-pendulum-uses-custom-slip-rings/
Rotating mechanisms can be a headache when it becomes necessary to deliver power through them. [Igor Brkic] faced just such a challenge when creating his double-pendulum build, and solved it with a little DIY.
The project is known as KLAATNO, inspired by the Croatian word for pendulum, klatno. It’s a …read more (https://hackaday.com/2019/11/15/double-pendulum-uses-custom-slip-rings/)
https://hackaday.com/2019/11/15/double-pendulum-uses-custom-slip-rings/
Rotating mechanisms can be a headache when it becomes necessary to deliver power through them. [Igor Brkic] faced just such a challenge when creating his double-pendulum build, and solved it with a little DIY.
The project is known as KLAATNO, inspired by the Croatian word for pendulum, klatno. It’s a …read more (https://hackaday.com/2019/11/15/double-pendulum-uses-custom-slip-rings/)