Forgot About Valentine’s Day? A Quick IoT Valentine

Did you forget about Valentine’s Day? Do you need a quick project to get ready for Valentine’s Day? [Becky Stern] has you covered. She’s whipped up a neat Internet-enabled Valentine project which should be pretty quick to put together.

At its heart (pun intended) is an ESP8266 microcontroller, in this case an Adafruit Feather Huzzah. Several layers of tissue paper heart are stitched together and cut out into a heart shape and then attached to a spring. A vibrating pager motor is used to shake the it when a signal comes in. Two buttons are used to send the message and a red LED is used to light the heart up. The whole thing is enclosed in a shadow box. [Becky] also put together another controller with a similar setup in a plastic enclosure. When the buttons are pressed on either controller, the other gets a signal and the heart shakes and lights up.

These projects send and receive Valentines, but they could be programmed to send whatever information you’d like. If you’re looking for a quick Valentine’s Day project, this is a great one, and you might have all you need already in your component drawer. Break out the soldering iron and send your Valentine a message! If you’re still looking for a quick Valentine’s Day project, check out this animated heart or this PCB Valentine.

Continue reading “Forgot About Valentine’s Day? A Quick IoT Valentine”

Valentine’s Heart with Awesome Animations

January has drawn to a close, and for many of you that means: “Oh no! Less than two weeks’ time until Valentine’s day.” But for us here at Hackaday, it means heart-themed blinky projects. Hooray!

[Dmitry Grinberg] has weighed in with his version of the classic heart-shaped LED ring. It’s hard to beat the BOM on this one: just a microcontroller, five resistors, and twenty LEDs. The rest is code, and optionally putting the name of your beloved into the copper layer. Everything is there for you to download.

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A Heart for His Girlfriend

[Decino] made a nice LED animated blinking heart box for his girlfriend. That’s a nice gesture, but more to the point here, it’s a nice entrée into the world of custom hardware. The project isn’t anything more than a home-etched PCB, a custom 3D-printed case, a mess of LEDs and current-limiting resistors, a shift register, and a microcontroller. (OK, we’re admittedly forgetting the Fifth Element.) The board is even single-sided with pretty wide traces. In short, it’s a great first project that ties together all of the basics without any parts left over. Oh, and did we mention Valentine’s day?

Once you’ve got these basics down, though, the world is your oyster. Building almost anything you need is just a matter of refining the process and practice. And if you’ve never played around with shift registers, a mega-blinker project like this is a great way to learn hands-on.

Not everything we write up on Hackaday has to be neural nets and JTAG ports. Sometimes a good beginner project that hits the fundamentals with no extra fat is just the ticket. What’s your favorite intro project?

Magic 8 of Hearts Plies Your True Love with Cheesy Sayings

Just in time for Valentine’s Day, here’s a project out of the LVL1 hackerspace in Louisville that should warm the heart of that special someone in your life. Behold the Magic 8 of Hearts.

The metaphors are somewhat mixed here, what with the heart-shaped box, the mysterious black window of a Magic 8-ball, and the cheesy once-a-year sayings like those printed on Sweethearts candies. [JAC_101] began surgery by punching a hole in the plastic heart for an OLED display. The white on black display evokes the Magic 8-Ball look, although adding a blue filter would have nailed it. A 3-axis accelerometer detects shaking motion and an Arduino Nano selects a message to display. Some white LEDs light up the enclosure and add a little pizzazz. As a bonus, the whole thing is inductively charged – no extra holes needed in this heart.

If your true love would appreciate something a little flashier, try this animated LED Valentine heart. And if you’re successful in your romantic endeavors, you might just find yourself building these ultra-geeky wedding invitations.

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Hackaday Links: February 15, 2015

[Matthias Wandel], also known as the genius/demigod that can make anything out of wood, put together a mount for a Raspberry Pi and a camera. Yes, it’s just a holder for a Raspi, but some of our readers who aren’t up to speed with [Matthias] might want to check out his Youtube channel. There are hundreds of awesome videos. Report back in a month.

[Evan], the guy working his butt off for the MidAtlantic Retro Computing Hobbyists, and the organizer for the Vintage Computer Festival East (we’re going, April 17-19, Wall, NJ) has been working on a book. It’s about mobile computing, and he’s crowdfunding it.

Your keyboard has buttons, and so does and Akai MPC. Daft PunKonsole! Press the space bar for  instrumental part. There is, as yet, no video of someone doing this correctly.

Valentine’s Day was yesterday, and that means Valentine’s Day builds started rolling in on the tip line. Here’s something that’s actually a very simple circuit that’s inspired from an old ‘Electronic Games and Toys’ book by [Len Buckwalter]. Here’s a video of it in action.

A few years ago the name of the game was tiny, credit card-sized ARM boards. It had to come to this: a 64-bit board. ARM Cortex A53 running at 1.2GHz. It also costs $120 and only has a gig of RAM, but there you go.

Animated LED Valentine Heart

With only a week left until Valentine’s day, [Henry] needed to think on his feet. He wanted to build something for his girlfriend but with limited time, he needed to work with what he had available. After scrounging up some parts and a bit of CAD work, he ended up with a nice animated LED Valentine heart.

[Henry] had a bunch of WS2812 LEDs left over from an older project. These surface mount LED’s are very cool. They come in a small form factor and include red, green, and blue LEDs all in a single package. On top of that, they have a built-in control circuit which makes each LED individually addressable. It’s similar to the LED strips we’ve seen in the past, only now the control circuit is built right into the LED.

Starting with the LEDs, [Henry] decided to build a large animated heart. Being a stickler for details, he worked out the perfect LED placement by beginning his design with three concentric heart shapes. The hearts were plotted in Excel and were then scaled until he ended up with something he liked. This final design showed where to place each LED.

The next step was to design the PCB in Altium Designer. [Henry’s] design is two-sided with large copper planes on either side. He opted to make good use of the extra copper surface by etching a custom design into the back with his girlfriend’s name. He included a space for the ATMega48 chip which would be running the animations. Finally, he sent the design off to a fab house and managed to get it back 48 hours later.

After soldering all of the components in place, [Henry] programmed up a few animations for the LEDs. He also built a custom frame to house the PCB. The frame includes a white screen that diffuses and softens the light from the LEDs. The final product looks great and is sure to win any geek’s heart. Continue reading “Animated LED Valentine Heart”

Hackaday Links: January 26, 2014

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The automotive industry is rolling more and more tech into their offerings. This is great for us because replacement or salvaged parts are great for projects. Here’s one component to look for. [MikesElectricStuff] tears apart the thermal imaging camera form an Audi. [via Hacked Gadgets]

Give your valentine an analog love note on the big day. [Tom’s] LED heart chaser design does it without any coding. It’s a 555 timer with CD4017 decade counter. The nice thing about the setup is a trimpot adjusts the chaser speed.

[Jan] is overclocking his Arduino to 32 MHz. For us that’s kind of an “eh” sort of thing. But his statement that you need to use a clock generator because the chip won’t work with an oscillator at that frequency raised an eyebrow. We saw an AVR chip running from a 32MHz crystal oscillator in the RetroWiz project from yesterday. So do we have it wrong or does [Jan]? Share your opinion in the comments.

Download a copy of the Apple II DOS source code… legally. Yay for releasing old code into the wild! The Computer History Museum has the DOS source code and a bunch of interesting history about it. [via Dangerous Prototypes]

While we were prowling around DP for the last link we came across [Ian’s] post on a new version of Bus Pirate cables. We’ve got the old rainbow cables which are pretty convenient. But if you’ve used them you’ll agree, hunting for the correct color for each connection isn’t anywhere near a fool-proof method. The new cable uses shrink tube printed with probe labels. They sound like a huge pain to manufacture. But this makes connections a lot easier. In our experience, when it doesn’t work its always a hardware problem! Hopefully this will mean fewer botched connections.

Make your tiny LiPo cells last longer. Not capacity wise, but physically. The delicate connections to the monitor PCB break easily, and the plug is really hard to connect and disconnect. [Sean] shows how he uses electrical tape for strain relief, and a bit of filing to loosen up the connector.

KerbalEdu: Kerbal Space Program for education. That’s right, you can play Kerbal as part of school now. Some may shake their heads at this, but school should be fun. And done right, we think gaming is a perfect way to educate. These initiatives must be the precursor to A Young Lady’s Illustrated Primer method of education. Right?