Are you guys tired of redesigned Arduinos yet? Usually we are, but [Ray] just released the SquareWear 2.0, and we have to admit, it’s a pretty slick design.
It’s an update to SquareWear 1.1 which we covered a year ago. That version made use of a 18F14K50 microcontroller, measured a tiny 1.6″ x 1.6″ and could easily be sewn into wearable circuits. But after receiving lots of requests to design a new Arduino based board, [Ray] obliged and made v2.0.
The new SquareWear is slightly bigger, measuring in at 1.7″ x 1.7″, but it packs a much bigger and more functional punch — just check out the image schematic above! The only catch is it doesn’t actually have a USB-to-serial chip on-board, which is why [Ray] was able to get the board so small and inexpensive. Instead it simulates USB in the software using the V-USB library. That method is much slower but still functional. To perform serial communication through the USB port it uses the onboard USBasp bootloader.
The board also features large through-holes to accommodate sew-able pin pads, making it super easy to integrate this into fabric!
For a complete explanation of the SquareWear 2.0, check out the video after the break.
Photoluminescent stars on your bedroom wall or ceiling are pretty cool, though the stationary shapes can become boring. [Adi] felt this way, too. While doodling with a bright white light on some glow in the dark vinyl, it occurred to him that this could make for an interesting display. He set about making GLO, the midnight message board and RSS display.
[Adi]‘s light writer uses 12 UV LEDs on a linear axis powered by a stepper motor to write RSS headlines, Twitter trends, or custom text on his wall. He finds the slow fade of the text very soothing to fall asleep by, and it’s easy to see why. The LED array imprints a section of a character consisting of a 6×5 bit pattern. The 12 LEDs are split into two groups, so it can write two lines at 45-50 characters each. [Adi] designed his own pixel font for this project, and advises that only upper case letter forms be used.
[Adi]‘s write-up is quite admirable and comprehensive. In the circuit build section, he advises that the LEDs must be very close to the vinyl for optimum results, but that they should protrude farther than the shift registers so the chips don’t rub the vinyl. Of course you could opt for more intense light sources, like laser. See it in action after the break.
Massimo Banzi and Mike Senese of Make Magazine met up early in the morning at the Las Vegas Convention Center coffee shop and had at chat about consumer electronics, crowd funding campaigns, Atmel’s booth and Arduino at CES! Watch the video below:
He started with an old HP 2500C A3 printer, which he had planned to salvage for parts only. While he was taking it apart he realized the chassis would make a great frame for his actual CNC machine! With that in mind he quickly changed his game plan to making each axis inside of the printer.
He’s using regular ball bearing drawer runners for both the X and Z axes, covered with a clever design of aluminum angle to keep any possible chips from jamming them. The Y axis on the other hand makes use of the original shaft runners from the print head carriage. Each axis is driven by threaded rod using recycled stepper motors from the printer.
An Arduino UNO sits at the heart of the project with a Protoneer CNC shield to control the stepper drivers. He’s also included an emergency stop, hold, resume, and cancel buttons for manual control.
It’s a great project, and an amazing example of using what is on hand for a project. Stick around after the break to see a demonstration of it printing!
When your name is Simon and you want to build your own circuit board business card, it makes perfect sense to incorporate a game of Simon Says, and that’s exactly what [Simon] did with his Business Card.
You may see a resemblance to the Engineer’s Emergency Business Card; that’s because [Simon] took inspiration from that card to build his own. The game of Simon Says is played via 4 low-profile pushbuttons and 4 0805 LEDs. The microcontroller of choice to run the game is an ATtiny45 set up to work with the Arduino IDE. But with only 5 pins available for I/O, [Simon] had to give up 4 pins to the LEDs and configure the remaining pin as an analog input. The buttons are tied into a voltage divider that feeds the analog input, so depending which button is pressed, a different voltage is read in, thus a value from 0 to 1023 determines which button was pressed.
One of the great things about this write-up is that it goes through the process of etching PCBs at home using the toner-transfer method. We’re not sure how many home-etched business cards he’s willing to pass out, but surely whoever does get the card, will never forget his name.
Now they shared with us a simple instructable to show to Arduino Community a hands-on experiment with ambient sensors:
The purpose of this instructable is to demonstrate how to hook up an Arduino + Ethernet Shield and send data to Plot.ly’s Servers and create beautiful graphs. We will be using a dual temperature+humidity sensor (DHT22), and sending the results directly to Plotly.
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