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SMD reflow at home

Our friend Vasilis posted a video story of a successful SMD reflow process… at his home, amazing! Powered by the Low Budget Manual Pick and Place : http://vpapanik.blogspot.gr/2012/11/low-budget-manual-pick-place.html SMD reflow at home – [ Link ] Low Budget Manual Pick and Place (HD) Super Simple SMT: Stencil8 Open source SMT pick and place machine redFrog Pick and Place machine Low Budget Manual Pick & Place

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How to build an USB real-time clock

Alexander Holler writes: [ via ] This page describes how you can use a small AVR device and a real-time clock (RTC) to build a hot-pluggable USB real-time clock (I’ve named it just usb-rtc), mainly for usage with ultra-low-cost hardware meant to be used with Linux. The overall cost for one of those thingies I’m describing here is about 15€-20€, which isn’t really cheap.

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Complete, low-cost, software programmable ohmmeter measures micro-ohms

Moshe Gerstenhaber and Mark Champion write: Numerous applications require the measurement of very low resistances, including but not limited to fuse integrity analysis, relay characterization, and superconductor evaluation.  There is a wide range of commercially available equipment designed for this task, but these units are prohibitively expensive and cannot be practically integrated into many applications outside the laboratory.  A common low-cost and compact method of measuring resistance is to inject a known dc current into the unknown resistor, measure the resulting voltage and calculate the resistance using Ohm’s law.  Unfortunately, for very low resistances, the current required to generate a voltage sufficiently distinguishable from the surrounding noise becomes impractically large. Complete, low-cost, software programmable ohmmeter measures micro-ohms – [ Link ] Low Ohm Meter – Measures 0.001 up to 1.999 Ohm Accurate Milliohm Measurement AC Ohmmeter – ESR Meter Ohm’s Calculator Test the safety of your devices with the VA588 multimeter

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Constant-Voltage/Constant-Current Devices Optimize Li-Ion Battery Charging for Energy-Harvesting

Stephen Evanczuk writes: Lithium-ion batteries have emerged as a common energy-storage device in many energy-harvesting applications. For engineers, maximizing battery performance and lifecycle requires use of battery charging circuitry able to account for the specialized characteristics of Li-ion cells

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Robot Rebuilt gets a grip on wine-serving robot (w/ video)

(Phys.org)—Robot research has its own unique show of hands as scientists focus on improving human-like abilities of grasping, pushing, and manipulating objects. Grabbing current attention is an assistant professor at Worcester Polytechnic Institute, Eduardo Torres-Jara, whose MIT spinoff, Robot Rebuilt, is featuring the robot Tactico, whose hand dexterity involves sensitive fingers capable of handling wine glasses and coffee mugs without requiring broom pans and mops in their aftermath.

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Isn´t it the right time to purchase a high-performance oscilloscope?

igital storage oscilloscopes HAMEG HMO win many awards because of many reasons, which can be summarized into one sentence – an excellent price / performance ratio.  Or more in detail – excellent features, user-friendly control and rich equipment with various functions enabling a fast “overview” but even a detailed analysis of measured signals, including math calculations. Inspite of advanced functions Hameg HMO series oscilloscopes maintain a simple intuitive control, thus a user can focus more on the measurement itself, than on a setting of the instrument

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Gas soldering tool DREMEL 2000 VersaTip now with a gift!

Multifunctional gas soldering tool will help you at many various applications like: soldering, melting, hot-cutting, welding and woodburning (pyrography)… This quality gas soldering tool provides a freedom of usage for example outdoor and everywhere where no electricity is available. But DREMEL 2000 VersaTip isn´t only a gas soldering tool with adjustable temperature

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