Colin Johnson @ nextgenlog.blogspot.com:
Hybrid solar cells that harvest all of the suns energy, instead of just a few narrow bands, could transform the energy economies worldwide: R. Colin Johnson @EETimes
Hybrid Solar Cells Promise 95% Efficiency - [Link]
by ajoyraman @ instructables.com:
USB connected TI TMS320F28027 based ZRLC Tweezers with
Most Digital multi-meters measure Resistance and Capacitance and LC-meters can measure Inductance and Capacitance. Presented here is a ZRLC meter which can measure Resistance, Capacitance, Inductance and Complex Impedance.
The hardware is built around a TMS320F28027 micro-controller an 8-port-analog-switch ADG714 from analog-devices and a Microchip rail-to-rail dual operational-amplifier MCP6022.
USB Tweezers for ZRLC measurements - [Link]
by TheSignalPathBlog @ youtube.com:
In this episode Shahriar reviews the new Keithley 2450 Source Measure Unit (SMU). This model, which is the successor to the widely adopted Keithley 2400, offers performance improvements as well as a brand new interface platform with multi-point touch screen.
The review demonstrated the instruments GUI, scripting capabilities through the TSP interface and various performance parameters. Furthermore the scripting features are used to measure super capacitor capacity, the performance of a wireless charging system, characterization of optoelectronic components and semiconductor elements.
Keithley 2450 Source Measure Unit (SMU) Review and Experiments - [Link]
by EEVblog @ youtube.com:
Dave tears down the new US$399 Rigol 4 channel 50MHz DS1054Z oscilloscope.
How can they get such incredible value for the price?
EEVblog #674 – Rigol DS1054Z Teardown - [Link]
F*watch is a fully open electronic watch project featuring an integrated GPS receiver.
The development started at CERN as an after-work project to make a special present for a retiring colleague who likes hiking and timing.
The full design (electronics, mechanics and software) is available under free licenses and the design is exclusively made with free tools.
F*watch – a fully open electronic watch - [Link]
ajoyraman posted a tutorial on how to make a DIY USB-matchbox oscilloscope, an instructable here:
In order to economize on the cost of an enclosure while still providing an aesthetic unit the Aj_Scope2 is enclosed in a large size cardboard matchbox enclosure.
The USB connection to the PC is on one end while the Audio-Jack for the signals to be monitored is on the other.
A ‘Busy’ LED is provided on one corner at the top and a ‘Reset’ switch is provided diagonally opposite.
The ‘Reset’ switch provides a restart of the micro-controller is the worst-case of hang-up. This typically occurs when the operator selects a trigger threshold which is out of limits with respect to the waveform being observed. If the Aj_Scope2 is operated correctly this switch is seldom used.
DIY USB-Oscilloscope in a matchbox - [Link]
Turn your toaster oven into your own solder reflow factory shop using the Reflow Master Shield!!!
The Reflow Master Shield from Paladin Enabling Technologies is an Arduino shield that turns your normal toaster oven into a reflow oven. A reflow oven is used in the production of electronics to change solder paste from a paste form to a liquid form and lastly to a solid form. This results in all your components being soldered for you in one run.
But let me share with you why I’ve created the Reflow Master Shield and why you would want one.
Reflow Master Shield – Arduino Solder Reflow Oven - [Link]
Compressed gas for cleaning – Dust cleaner, brings huge savings for the price of small limitations.
The name of this article might also be like „Dust Off or Dust Cleaner? Both are the sprays – compressed air for dust removal. Dust Off is a well known, long-term well-proven spray for cleaning from dust and other loose dry particles. Dust Off provides absolute safety in a form of non-flammability. However, this indisputable plus is also reflected in a price.That´s why we bring you also a cheaper alternative – spray Dust Cleaner, which provides practically the same service like Dust Off, but for approximately only a 1/3 price. Even though compressed (liquefied) gas Dust Cleaner is flammable, but it represents much cheaper solution for all cases, when there´s no risk of ignition. for example when we work with a switched-off device, which isn´t hot at the same time and there´s no source of sparks near. That´s why it´s suitable for example for cleaning of:
- plated copper boards (disconnected from a power supply)
- micro-assemblies, servo-motors etc.
- optics, lenses and precision mechanics
- PC and other communication devices
- fans and heatsinks
- fiberglass cables connections
Similarly like Dust Off, even the Dust Cleaner produces a strong air jet, which is in majority of cases strong enough to remove various dry contaminants. It finds its place everywhere, where other cleaning methods (for example with liquids) are not suitable, or they might leave various residues. Detailed information can be found in the Dust Cleaner and also Dust Off datasheets.
Dust Cleaner will blow away dust for a 1/3 price - [Link]
by Darren Quick @ gizmag.com:
Researchers from Columbia University and the Georgia Institute of Technology are laying claim to having observed piezoelectricity in an atomically thin material for the first time. The effect was demonstrated in the world’s thinnest electric generator made from a two-dimensional molybdenum disulfide (MoS2) material, which had previously been predicted to exhibit such properties.
Two-dimensional piezoelectric material forms basis of world’s thinnest electric generator - [Link]
Recent advances of Li-Ion battery technology could be the kick start the faltering electric vehicle market needs for it to go main stream. As well as the fast charge time the new battery can be cycled more than 10,000 times and has a lifespan of 20 years.
The work carried out at NTU Singapore replaces the traditional graphite anode with one made from titanium dioxide, an abundant, cheap and safe material found in soil. It is commonly used as a food additive and in sunscreen lotions. Before the material can be used it is converted into fine nanotubes which allows faster chemical reactions in the cell giving it super fast recharge times.
Li-Ion battery recharges to 70% in 2 mins - [Link]