by PiJuice @ instructables.com:
I’m so excited about this new project! A truly compact and portable Raspberry Pi Camera and it’s easy as anything to build!
I first thought about building a Raspberry Pi Camera after seeing the SnapPiCam instructable guide. This is a clever little project, which uses a LiPo battery to power a Raspberry Pi model A. But it got me thinking could I do something even more compact which is even simpler to build?
The real challenge is powering this little baby. Where the SnapPiCam is using a separate battery, converter and charging unit I’ve used the PiJuice. It’s basically an all in one battery module for the Raspberry Pi and it’s an ideal integrated power solution for a DIY Compact Camera.
I’ve also decided to use the Raspberry Pi a+ as it’s the cheapest and smallest available Raspberry Pi so it’ll fit nicely with PiJuice and make this camera supper compact!
Raspberry Pi Compact Camera – [Link]
Make this super easy and cool looking 2.8″ touchscreen Internet Radio that can be controlled with PC, Smartphone and basically every machine that has got a browser and an internet connection..
Touchscreen Internet Radio using Raspberry – [Link]
by Connor Archard and Feiran Chen @ cornell.edu:
Our final project was to create a rapid prototyping machine for electrical circuits by repurposing an old pen plotter that we fitted with an electrically conductive pen. Our plotter utilized an atmega 1284P to control the x and y-axis motors, and to raise and lower the pen. We created a web app that allowed a user to draw out circuits quickly, and then send them to be printed out on our plotter over a wifi network as our host computer that maintained the serial connection with the atmega 1284P. The atmega 1284P would receive vectors of x and y coordinates from the host computer that would instruct it on how to move the plotter head. By measuring the position of the plotter head on each axis through the on-chip ADC and two servo potentiometers, we were able move the plotter head to an accuracy of approximately 1/10th of an inch on a typical piece of A4 paper.
Rapid Circuit Prototyping – Circuit Plotting – [Link]
by Suzanne Deffree:
The holiday season is in full swing and you may still have a few people to check off your gift-giving list. If you’re at a loss for what to buy the open-source-focused engineer or maker in your life, take a gander at these 8 open-source gifts.
In this list you’ll find out-of-the-box devices, kits, and components for DIY designing, some starting as low as $19.99, with others topping $2100. Be sure to share your own open-source favorites in the comments section and let us know what you think of the ones we’ve included on this list.
8 open-source holiday gifts – [Link]
A state-of-the-art, mobile maker space, that brings the richness of hands-on making to you.
Tesla Truck (www.teslatruck.co) – is a mobile maker-space and a cutting edge prototyping facility equipped with 3D printers, Laser Cutters and CNC machines. Tesla Truckʼs mission is to enable students, teachers, makers, and other creative minds to collaborate, innovate, and create in a dynamic and accessible space. Tesla Truck brings the richness of hands-on making to your community by delivering a cutting edge fabrication facility on a mobile platform.
Tesla Truck: A Mobile-Maker Space for the Masses! – [Link]
by Morgana Matus:
Since the first wheels of mass production started turning during the Industrial Revolution, fine craftsmen and DIYers have found it more difficult to sustain their crafts. Until recently, those handmade-focused entrepreneurs who wanted or needed access to the latest technology would have to assemble a large amount of capital for items such as 3D printers or CNC machines. Those who couldn’t afford the high overhead were left to envy those wares and hope for a price decrease.
Makerspaces: A Revolution in Sustainable Production – [Link]
Making your own PCB boards for DIY electronics projects is not difficult. Doing so as a DIY project is extremely handy and allows almost anyone to custom design one-off, or small batch circuit layouts relatively quickly and cheaply, without the need for the volumes or costs involved in using the services of professional circuit board manufacturers. With care, DIY PCB project results are usually of extremely high quality and are very satisfying. Even more interest can be added to projects when printed circuit boards are combined with CNC cutter designs for shaping of the circuit boards.
There are various different methods for making PCB boards. Each method has various pros and cons, with most considerations being linked to cost, quality of finished product, accuracy required for fine circuits and availability of chemicals and materials.
DIY Etching of Printed Circuit Boards (PCB) – [Link]
Applied Science @ youtube.com writes:
I built a microbalance based on a design by Paul Grohe: http://www.youtube.com/watch?v=n90whRO-ypE
It is has a precision of about 5 micrograms, and I measured a single eyelash at about 35 micrograms. The balance is built from an analog panel meter that is controlled by a servo loop which optically monitors the meter’s position. Adding mass to the meter’s needle requires that the servo loop add more current to maintain the needle’s position. This additional current is read, and converted to a mass value.
Measure the mass of an eyelash with a DIY microbalance – [Link]
Tutorial on how to make your own custom LCD at home!
DIY Custom LCD – [Link]
This welder, thanks to the limit switch, after lowering the upper electrode arm, automatically enables the welding process in a safe and proper way. First, it waits 1 second so that the user have time to clamp electrodes on welded material, and then turns on the weld current for time in the range of 0 – 4 seconds, which is set by the potentiometer. This allows both hands to be free, and there’s no need to use the foot switch.
Semi-automatic spot welder 2,6V 1kA – [Link]