Keep Pesky Cats At Bay With A Machine-Learning Turret Gun
https://hackaday.com/2019/07/12/keep-pesky-cats-at-bay-with-a-machine-learning-turret-gun/
It doesn’t take long after getting a cat in your life to learn who’s really in charge. Cats do pretty much what they want to do, when they want to do it, and for exactly as long as it suits them. Any correlation with your wants and needs is strictly …read more (https://hackaday.com/2019/07/12/keep-pesky-cats-at-bay-with-a-machine-learning-turret-gun/)
https://hackaday.com/2019/07/12/keep-pesky-cats-at-bay-with-a-machine-learning-turret-gun/
It doesn’t take long after getting a cat in your life to learn who’s really in charge. Cats do pretty much what they want to do, when they want to do it, and for exactly as long as it suits them. Any correlation with your wants and needs is strictly …read more (https://hackaday.com/2019/07/12/keep-pesky-cats-at-bay-with-a-machine-learning-turret-gun/)
You Are Probably Using NASA Technology
https://hackaday.com/2019/07/12/you-are-probably-using-nasa-technology/
You often hear people — especially non-hacker types — complain that money spent on space travel would be better off spent here on Earth. Of course that ignores one big factor, that space programs have resulted in a host of spin off technologies, many of which you use every day. …read more (https://hackaday.com/2019/07/12/you-are-probably-using-nasa-technology/)
https://hackaday.com/2019/07/12/you-are-probably-using-nasa-technology/
You often hear people — especially non-hacker types — complain that money spent on space travel would be better off spent here on Earth. Of course that ignores one big factor, that space programs have resulted in a host of spin off technologies, many of which you use every day. …read more (https://hackaday.com/2019/07/12/you-are-probably-using-nasa-technology/)
Simple Simon Says Looks Sharp
https://hackaday.com/2019/07/12/simple-simon-says-looks-sharp/
Simon was a popular toy, launching at the very end of the 1970s, and cribbed from earlier work by Atari with their game Touch Me. The gameplay is simple, and while we suspect it won’t last quite as long as the several thousand years we’ve so far had chess, it’s …read more (https://hackaday.com/2019/07/12/simple-simon-says-looks-sharp/)
https://hackaday.com/2019/07/12/simple-simon-says-looks-sharp/
Simon was a popular toy, launching at the very end of the 1970s, and cribbed from earlier work by Atari with their game Touch Me. The gameplay is simple, and while we suspect it won’t last quite as long as the several thousand years we’ve so far had chess, it’s …read more (https://hackaday.com/2019/07/12/simple-simon-says-looks-sharp/)
3D Printing An Old-School Coherer
https://hackaday.com/2019/07/13/3d-printing-an-old-school-coherer/
Coherers were devices used in some of the very earliest radio experiments in the 19th century. Consisting of a tube filled with metal filings with an electrode at each end, the coherer would begin to conduct when in the presence of radio frequency energy. Physically tapping the device would then …read more (https://hackaday.com/2019/07/13/3d-printing-an-old-school-coherer/)
https://hackaday.com/2019/07/13/3d-printing-an-old-school-coherer/
Coherers were devices used in some of the very earliest radio experiments in the 19th century. Consisting of a tube filled with metal filings with an electrode at each end, the coherer would begin to conduct when in the presence of radio frequency energy. Physically tapping the device would then …read more (https://hackaday.com/2019/07/13/3d-printing-an-old-school-coherer/)
A Wedding Gift Fit For A Hardware Hacker
https://hackaday.com/2019/07/13/a-wedding-gift-fit-for-a-hardware-hacker/
If you read Hackaday on a regular basis, there are some names you will have seen more than once. People who continually produce fascinating and inventive projects that amaze and delight us, and who always keep us coming back for more. One such hacker is [Jeroen Domberg], perhaps better known …read more (https://hackaday.com/2019/07/13/a-wedding-gift-fit-for-a-hardware-hacker/)
https://hackaday.com/2019/07/13/a-wedding-gift-fit-for-a-hardware-hacker/
If you read Hackaday on a regular basis, there are some names you will have seen more than once. People who continually produce fascinating and inventive projects that amaze and delight us, and who always keep us coming back for more. One such hacker is [Jeroen Domberg], perhaps better known …read more (https://hackaday.com/2019/07/13/a-wedding-gift-fit-for-a-hardware-hacker/)
Minivac 601 Replica Gets A Custom Motorized Rotary Switch
https://hackaday.com/2019/07/13/minivac-601-replica-gets-a-custom-motorized-rotary-switch/
One of the joys of electronics as a hobby is how easy it is to get parts. Literally millions of parts are available from thousands of suppliers and hundreds of distributors, and everyone competes with each other to make it as easy as possible to put together an order from …read more (https://hackaday.com/2019/07/13/minivac-601-replica-gets-a-custom-motorized-rotary-switch/)
https://hackaday.com/2019/07/13/minivac-601-replica-gets-a-custom-motorized-rotary-switch/
One of the joys of electronics as a hobby is how easy it is to get parts. Literally millions of parts are available from thousands of suppliers and hundreds of distributors, and everyone competes with each other to make it as easy as possible to put together an order from …read more (https://hackaday.com/2019/07/13/minivac-601-replica-gets-a-custom-motorized-rotary-switch/)
Project Egress: Two Ways to Latch the Hatch
https://hackaday.com/2019/07/13/project-egress-two-ways-to-latch-the-hatch/
With July slipping away and the deadline approaching, the Project Egress builds are pouring in now. And we’re starting to see more diversity in the choice of materials and methods for the parts being made, like these two latches made with very different methods by two different makers.
For the …read more (https://hackaday.com/2019/07/13/project-egress-two-ways-to-latch-the-hatch/)
https://hackaday.com/2019/07/13/project-egress-two-ways-to-latch-the-hatch/
With July slipping away and the deadline approaching, the Project Egress builds are pouring in now. And we’re starting to see more diversity in the choice of materials and methods for the parts being made, like these two latches made with very different methods by two different makers.
For the …read more (https://hackaday.com/2019/07/13/project-egress-two-ways-to-latch-the-hatch/)
A PDP Laptop, For Various Definitions Of A Laptop
https://hackaday.com/2019/07/13/a-pdp-laptop-for-various-definitions-of-a-laptop/
Digital Equipment Corp.’s PDP-11 is one of the most important computers in history. It’s the home of Unix, although that’s arguable, and it’s still being used in every application, from handling nuclear control rods to selling Ed Sheeran tickets on Ticketmaster. As the timeline of PDP-11 machines progressed, the hardware …read more (https://hackaday.com/2019/07/13/a-pdp-laptop-for-various-definitions-of-a-laptop/)
https://hackaday.com/2019/07/13/a-pdp-laptop-for-various-definitions-of-a-laptop/
Digital Equipment Corp.’s PDP-11 is one of the most important computers in history. It’s the home of Unix, although that’s arguable, and it’s still being used in every application, from handling nuclear control rods to selling Ed Sheeran tickets on Ticketmaster. As the timeline of PDP-11 machines progressed, the hardware …read more (https://hackaday.com/2019/07/13/a-pdp-laptop-for-various-definitions-of-a-laptop/)
A Lot Of Volts For Not A Lot
https://hackaday.com/2019/07/13/a-lot-of-volts-for-not-a-lot/
There was a time when high voltage in electronic devices was commonplace, and projects driving some form of vacuum or ionisation tube simply had to make use of a mains transformer from a handy tube radio or similar. In 2019 we don’t often have the need for more than a …read more (https://hackaday.com/2019/07/13/a-lot-of-volts-for-not-a-lot/)
https://hackaday.com/2019/07/13/a-lot-of-volts-for-not-a-lot/
There was a time when high voltage in electronic devices was commonplace, and projects driving some form of vacuum or ionisation tube simply had to make use of a mains transformer from a handy tube radio or similar. In 2019 we don’t often have the need for more than a …read more (https://hackaday.com/2019/07/13/a-lot-of-volts-for-not-a-lot/)
Fourier Explained: [3Blue1Brown] Style!
https://hackaday.com/2019/07/13/fourier-explained-3blue1brown-style/
If you ask most people to explain the Fourier series they will tell you how you can decompose any particular wave into a sum of sine waves. We’ve used that explanation before ourselves, and it is not incorrect. In fact, it is how Fourier first worked out his famous series. …read more (https://hackaday.com/2019/07/13/fourier-explained-3blue1brown-style/)
https://hackaday.com/2019/07/13/fourier-explained-3blue1brown-style/
If you ask most people to explain the Fourier series they will tell you how you can decompose any particular wave into a sum of sine waves. We’ve used that explanation before ourselves, and it is not incorrect. In fact, it is how Fourier first worked out his famous series. …read more (https://hackaday.com/2019/07/13/fourier-explained-3blue1brown-style/)
Isomorphic Keyboards With CV Out
https://hackaday.com/2019/07/13/isomorphic-keyboards-with-cv-out/
A piano keyboard can be much more than a linear row of white keys and black keys. Over the history of the keyboard, different arrangement have been made, and in the late 19th century, the Janko keyboard was developed. This keyboard that was a series of buttons laid out on …read more (https://hackaday.com/2019/07/13/isomorphic-keyboards-with-cv-out/)
https://hackaday.com/2019/07/13/isomorphic-keyboards-with-cv-out/
A piano keyboard can be much more than a linear row of white keys and black keys. Over the history of the keyboard, different arrangement have been made, and in the late 19th century, the Janko keyboard was developed. This keyboard that was a series of buttons laid out on …read more (https://hackaday.com/2019/07/13/isomorphic-keyboards-with-cv-out/)
The Demise Of The Password
https://hackaday.com/2019/07/14/the-demise-of-the-password/
Although we hackers will sometimes deliberately throw away our passwords and then try and hack our own phones / WIFI systems for self amusement, for many people including the actual inventor of the password, Fernardo “Corby” Corbató (1926-2019), passwords have become extremely burdensome and dis-functional.
Sadly, Fernando (according to the …read more (https://hackaday.com/2019/07/14/the-demise-of-the-password/)
https://hackaday.com/2019/07/14/the-demise-of-the-password/
Although we hackers will sometimes deliberately throw away our passwords and then try and hack our own phones / WIFI systems for self amusement, for many people including the actual inventor of the password, Fernardo “Corby” Corbató (1926-2019), passwords have become extremely burdensome and dis-functional.
Sadly, Fernando (according to the …read more (https://hackaday.com/2019/07/14/the-demise-of-the-password/)
LEGO-Based Robot Arm With Motion Planning
https://hackaday.com/2019/07/14/lego-based-robot-arm-with-motion-planning/
Robotic arms have found all manner of applications in industry. Whether its welding cars, painting cars, or installing dashboards in cars, robotic arms can definitely do the job. However, you don’t need to be a major automaker to experiment with the technology. You can build your own, complete with proper …read more (https://hackaday.com/2019/07/14/lego-based-robot-arm-with-motion-planning/)
https://hackaday.com/2019/07/14/lego-based-robot-arm-with-motion-planning/
Robotic arms have found all manner of applications in industry. Whether its welding cars, painting cars, or installing dashboards in cars, robotic arms can definitely do the job. However, you don’t need to be a major automaker to experiment with the technology. You can build your own, complete with proper …read more (https://hackaday.com/2019/07/14/lego-based-robot-arm-with-motion-planning/)
A Power Bank For Soldering On The Go
https://hackaday.com/2019/07/14/a-power-bank-for-soldering-on-the-go/
If you have a portable gadget, the chances are you’ve probably used power banks before. What few could have predicted when these portable battery packs first started cropping up is that they would one day be used to power soldering irons. Dissatisfied with the options currently available on the market, …read more (https://hackaday.com/2019/07/14/a-power-bank-for-soldering-on-the-go/)
https://hackaday.com/2019/07/14/a-power-bank-for-soldering-on-the-go/
If you have a portable gadget, the chances are you’ve probably used power banks before. What few could have predicted when these portable battery packs first started cropping up is that they would one day be used to power soldering irons. Dissatisfied with the options currently available on the market, …read more (https://hackaday.com/2019/07/14/a-power-bank-for-soldering-on-the-go/)
Homekit Compatible Sonoff Firmware Without A Bridge
https://hackaday.com/2019/07/14/homekit-compatible-sonoff-firmware-without-a-bridge/
Generally speaking, home automation isn’t as cheap or as easy as most people would like. There are too many incompatible protocols, and more often than not, getting everything talking requires you to begrudgingly sign up for some “cloud” service that you didn’t ask for. If you’re an Apple aficionado, there …read more (https://hackaday.com/2019/07/14/homekit-compatible-sonoff-firmware-without-a-bridge/)
https://hackaday.com/2019/07/14/homekit-compatible-sonoff-firmware-without-a-bridge/
Generally speaking, home automation isn’t as cheap or as easy as most people would like. There are too many incompatible protocols, and more often than not, getting everything talking requires you to begrudgingly sign up for some “cloud” service that you didn’t ask for. If you’re an Apple aficionado, there …read more (https://hackaday.com/2019/07/14/homekit-compatible-sonoff-firmware-without-a-bridge/)
The Proof Is In The Box
https://hackaday.com/2019/07/14/the-proof-is-in-the-box/
Making bread dough is simple — it’s just flour and water, with some salt and yeast if you want to make things easy on yourself. Turning that dough into bread is another matter entirely. You need to punch that dough down, you need to let it rise, and you need …read more (https://hackaday.com/2019/07/14/the-proof-is-in-the-box/)
https://hackaday.com/2019/07/14/the-proof-is-in-the-box/
Making bread dough is simple — it’s just flour and water, with some salt and yeast if you want to make things easy on yourself. Turning that dough into bread is another matter entirely. You need to punch that dough down, you need to let it rise, and you need …read more (https://hackaday.com/2019/07/14/the-proof-is-in-the-box/)
Hackaday Links: July 14, 2019
https://hackaday.com/2019/07/14/hackaday-links-july-14-2019/
The M5Stack is a plastic box loaded up with an ESP32, a display, some pin headers, and a few buttons. Why does this exist? It’s a platform of sorts, and we’ve seen people adding LoRa to the M5Stack as well as thermal cameras. Hot from random online retailers is the …read more (https://hackaday.com/2019/07/14/hackaday-links-july-14-2019/)
https://hackaday.com/2019/07/14/hackaday-links-july-14-2019/
The M5Stack is a plastic box loaded up with an ESP32, a display, some pin headers, and a few buttons. Why does this exist? It’s a platform of sorts, and we’ve seen people adding LoRa to the M5Stack as well as thermal cameras. Hot from random online retailers is the …read more (https://hackaday.com/2019/07/14/hackaday-links-july-14-2019/)
The Basics Of SCRs
https://hackaday.com/2019/07/14/the-basics-of-scrs/
Although the silicon controlled rectifier or SCR has been around since 1957, it doesn’t get nearly the love an ordinary transistor does. That’s a shame because they are quite handy when it comes to controlling AC and DC voltages in things such as lamp dimmers, motor speed controllers, and even …read more (https://hackaday.com/2019/07/14/the-basics-of-scrs/)
https://hackaday.com/2019/07/14/the-basics-of-scrs/
Although the silicon controlled rectifier or SCR has been around since 1957, it doesn’t get nearly the love an ordinary transistor does. That’s a shame because they are quite handy when it comes to controlling AC and DC voltages in things such as lamp dimmers, motor speed controllers, and even …read more (https://hackaday.com/2019/07/14/the-basics-of-scrs/)
Pedal Faster! I Need To Join A Conference Call!
https://hackaday.com/2019/07/14/pedal-faster-i-need-to-join-a-conference-call/
It is rare to find a car these days without some mechanism for charging a cell phone. After all, phones need charging all the time and we spend a lot of time in our cars. But what if you spend a lot of time on your bike? Five teens from …read more (https://hackaday.com/2019/07/14/pedal-faster-i-need-to-join-a-conference-call/)
https://hackaday.com/2019/07/14/pedal-faster-i-need-to-join-a-conference-call/
It is rare to find a car these days without some mechanism for charging a cell phone. After all, phones need charging all the time and we spend a lot of time in our cars. But what if you spend a lot of time on your bike? Five teens from …read more (https://hackaday.com/2019/07/14/pedal-faster-i-need-to-join-a-conference-call/)
A Stacked Peltier Cloud Chamber Build
https://hackaday.com/2019/07/15/a-stacked-peltier-cloud-chamber-build/
Subatomic particles are remarkably difficult to see, but they can be made visible with the right techniques. Building a cloud chamber with dry ice is a common way to achieve this, but coming by the material can be difficult. [The Thought Emporium] wanted a more accessible build, and went for …read more (https://hackaday.com/2019/07/15/a-stacked-peltier-cloud-chamber-build/)
https://hackaday.com/2019/07/15/a-stacked-peltier-cloud-chamber-build/
Subatomic particles are remarkably difficult to see, but they can be made visible with the right techniques. Building a cloud chamber with dry ice is a common way to achieve this, but coming by the material can be difficult. [The Thought Emporium] wanted a more accessible build, and went for …read more (https://hackaday.com/2019/07/15/a-stacked-peltier-cloud-chamber-build/)
Curbing Internet Addiction In A Threatening Manner
https://hackaday.com/2019/07/15/curbing-internet-addiction-in-a-threatening-manner/
Those who have children of their own might argue that the youth of today are getting far too much internet time. [Nick] decided to put an emergency stop to it and made this ingenious internet kill switch to threaten teenagers with. Rather unassuming on the outside, the big red button …read more (https://hackaday.com/2019/07/15/curbing-internet-addiction-in-a-threatening-manner/)
https://hackaday.com/2019/07/15/curbing-internet-addiction-in-a-threatening-manner/
Those who have children of their own might argue that the youth of today are getting far too much internet time. [Nick] decided to put an emergency stop to it and made this ingenious internet kill switch to threaten teenagers with. Rather unassuming on the outside, the big red button …read more (https://hackaday.com/2019/07/15/curbing-internet-addiction-in-a-threatening-manner/)