Collaborate Disseminate
Sometimes, projects start in somewhat unlikely places. This one began when [Istvan Raduly] scored a fake raven at a neighbor’s garage sale and decided to turn it into a thunder-and-lightning …read more Continue reading 2023 Halloween Hackfest: Quoth the Raven, “Caww!”
While some of us can fall asleep anywhere from a noisy auditorium to a brightly lit train station, others are more fussy, requiring quiet and dark to nod off. [Craig …read more Continue reading Motion-Activated Clock Only Lights Up On Command
Working from home with regular video meetings has its challenges, especially if you add kids to the mix. To help avoid embarrassing situations, [Charitha Jayaweera] created Present!, a USB device …read more Continue reading Avoid Awkward Video Conference Situations With PIR and Arduino
While there are loads of impressive and complex projects here on Hackaday, sometimes it’s the simple ones that really speak to us. In this case we were presented with [Isabell Park]’s easy-to-follow instructable on how to build an anti-procrastination device.
On the hardware side there are no surprises, it consists …read more
Continue reading PIR Sensor In A Jar Helps You Keep Your Concentration
Most of us currently have to deal with wearing face masks in our daily life. An experience that is not entirely pleasurable as it is more difficult to breathe under the mask and can become hot after a while. In addition, you have to take off the mask whenever you …read more
Continue reading Self-Shutting Face Mask is Hacker’s Delight
The idea behind a dummy security camera is that people who are up to no good might think twice about doing anything to your property when they think they’re being recorded. Obviously a real security camera would be even better, but sometimes that’s just not economically or logistically possible. Admittedly …read more
Continue reading Dummy Security Camera Is Smarter Than It Looks
Getting young kids excited about technology and engineering can be a challenge, and getting them interested in the environment isn’t exactly a walk in the park either. So any project that can get them simultaneously engaged in both is a considerable achievement, especially when they can do the work themselves and see how creating something can have a positive impact on their little corner of the world.
[Robert Hart] writes in to tell us about a project that challenged elementary school students to help make sure their peers put trash in its place. The kids came up with some predictably …read more
Continue reading Talking Garbage Can Keeps Eye on Playground
Getting young kids excited about technology and engineering can be a challenge, and getting them interested in the environment isn’t exactly a walk in the park either. So any project that can get them simultaneously engaged in both is a considerable achievement, especially when they can do the work themselves and see how creating something can have a positive impact on their little corner of the world.
[Robert Hart] writes in to tell us about a project that challenged elementary school students to help make sure their peers put trash in its place. The kids came up with some predictably …read more
Continue reading Talking Garbage Can Keeps Eye on Playground
Thieves beware. If you prowl around [Matthew Gaber]’s place, you get soaked by his motion activated super-squirter. Even if he’s not at home, he can aim and fire it remotely using an iPhone app. And for the record, a camera saves photos of your wetted-self to an SD card.
The whole security system is handled by three subsystems for target acquisition, photo documentation, and communications. The first subsystem is centered around an ESPino which utilizes a PIR sensor to detect motion. It then turns on a windscreen washer pump and uses pan and tilt servos to squirt water in a …read more
Continue reading Motion Activated Super-Squirter Stands Guard
In order to get the most out of the batteries connected to your microcontroller, you’ll probably need to put it to sleep, the deeper the better. [Rgrokett] was curious about the nighttime habits of his cat, and came up with a nice little hack to get more battery life out of the ESP8266 that he was using.
[rgrokett]’s cat enters and leaves through a cat-door. He figured a PIR sensor would let him know when there was movement around the door. He could then tell if the cat was around. Leaving the PIR sensor and the ESP8266 microcontroller (an Adafruit …read more
