Apollo-NG - picoUVX. The picoUVX is a highly efficient, mobile 10W UV-Exposer unit, based on modern LED technology and a very efficient, yet simple step-up switch mode supply design, with a low conversion loss of about 7% (93% efficiency). It's the first member of the picoFab family, to make off-grid development of fine pitch PCB's possible anywhere, using just 12VDC/0.83A (10W).
Emitter-Unit LEDs Most photo-positive PCB materials (especially Bungard) react well to a wavelength of about 400nm. The LEDs for this unit were bought here and then hand-selected on a breadboard to avoid soldering DoA LEDs and to sort out obvious low-performers, so that all 137 LED's will emit a balanced output over the whole light forming surface.
UV LEDs Specs The emitter-array's output intensity is about 274 candela, the approximate luminous flux is about 25 lumen. Constant current source chains The simplest form is just a resistor, but experiments showed uneven lighting and unstable currents with changes in temperature. Schematic. 8 Design Projects done in less than a minute each. Volvo SFINX - Volvo's futuristic Excavator concept machine. Slider prototype P5. Cheap, super-sensitive digitizing probe for cnc... harkman's probe. It's so simple, and sensitive... i named it after myself... harkman's probe if you want to scan, or digitize a model in a cnc program, it requires a digitizer probe.. unfortunately they are expensive, or, hard to make yourself.. lots of examples use ball bearings, 3 contacts, for sideway forces, a spring... here is one solution i didn't find... an easy one.., while looking for a cheap solution (DIY) i couldn't help thinking about a very sensitive device, the needle of a turntable.. or something equivalent.. the solution... a nail soldered on a piezo buzzer, with a microprocessor as a converter, with adjusable threshold..
While it can be done cheaper, i think this is the easiest way... it takes about 10 minutes to make one... and is very sensitive, adjusable, easy to use, or to custom, to your own needs what you need the rest is up to you... digitizer is connected to the limit switch of the z axis but there are to many programs and cnc machines to tell what step is next to take... Electromagnet Dot Display for TNT's "Perception" GeekDesk® Adjustable Height Desks - Home. Polar Printer Reimagines the Way Magnets Work (With Video!)
A startup company in Hunstville, Ala. has revealed an invention that can reconfigure the charges of magnets in never-before-seen patterns, a breakthrough that may lead to new varieties of contact-free attachments and friction-free gears. The company, Correlated Magnetics Research (CMR), creates magnets that, instead of carrying a positive charge on one end and a negative on the other, have complex field patterns that can be used to attract corresponding magnetic fields. When the correlated patterns on two magnets match, they attract and clasp. With a simple turn, the correlation is lost and the two sides can be easily separated. At the heart of the discovery is inventor Larry Fullerton, CEO and chief scientist of CMR and a former NASA scientist who worked on advanced radar and ultra-wideband communications technology.
Fullerton's eureka moment occurred during a frustrating experience putting together toys for his grandchildren: "What if these could self-assemble? " How to create a HDR PanoPlanet (Polar Panorama) Tripod Floater 2.2 - Active Magnetic Bearings Demonstrator. Stator Teeth/Magnet pole ratios? Compared to a conventional brushless 3-phase outrunner motor: I do not expect as much power output.
I do not expect as much torque. I know this motor will not have the same power output as one that contains iron. The flux ring on the magnets is missing, and the coils have an air or plastic core. I have the freedom to change all the physical variables in the motor. The diameter, the stator pole count, the magnet pole count, stator coil geometry. I only want to know, given only plastic, copper, magnets, bearings, shaft: 1.
I appreciate all the help with this, it is only an experiment. I should have stated previously the known negative aspects such as no magnet flux ring means wasted magnetic field, no iron in coils to handle higher power input, low torque output from those combined lacking. Maybe we could try to list some good aspects. 1. 2. 3. 4. ATX psu turned into an adjustable voltage bench supply. Cartesian Motion Platform. Animatronic Hand. G 2.4GHZ RF Wireless Shock Controller For Sony PS2 ps 2. Barry's Coilgun Designs. Learn about coilgun design theory, design and implementation. We have several low-power coilguns, maglev systems and other projects. This website is my engineering notebook.
Read the slides for Magnetic Launches - Hands-on Ideas 10, my presentation about coilguns on May 22, 2013. This is a quick way to see how and why it started, what happened, and where it's going. Download my presentation here. Current projects: Click here to see my latest coilgun, my best coilgun or my levitator. What is a coilgun or gauss gun? Why build a coilgun? A coilgun is scalable to very large applications, possibly as large as a mass driver to put payloads into orbit. You can also learn about magnetic levitation here. May 22, 2013 - Added the Overview page for a quick introduction to how it started, what happened and where it's going. Shutov - A microfabricated electromagnetic linear synchronous motor.pdf (application/pdf-Objekt)