Famous Circuits Blog

IEEE Spectrum

Averting Space Doom: Solving the Orbital Junk Problem
Smaller Drones Aren't Major Threat to Aircraft: A Little Birdie Told Me So
Hey Tech Guys and Gals, Uncle Sam Wants YOU (to Join the U.S. Digital Service)
Smart Neural Stimulators Listen to the Body
Life as a Bionic Woman
Perovskite Manipulated To Carry Both Electrical and Magnetic Polarization
When U.S. Telecoms Come Calling, Will Cuba Pick Up The Phone?
Japan Seeks to Rein In a Solar Juggernaut

Averting Space Doom: Solving the Orbital Junk Problem

Posted: 28 Jan 2015 08:00 AM PST

Sadly, space lasers and orbital tugboats are unlikely fixes

Smaller Drones Aren't Major Threat to Aircraft: A Little Birdie Told Me So

Posted: 28 Jan 2015 07:10 AM PST

Small recreational drones would likely pose no more danger to aircraft than sparrows and gulls

Hey Tech Guys and Gals, Uncle Sam Wants YOU (to Join the U.S. Digital Service)

Posted: 28 Jan 2015 05:06 AM PST

Former Googler Mikey Dickerson went to Washington, and now he is looking for a few good geeks to join him

Smart Neural Stimulators Listen to the Body

Posted: 27 Jan 2015 12:00 PM PST

Implanted devices sense vital statistics to deliver precisely tailored therapy

Life as a Bionic Woman

Posted: 27 Jan 2015 12:00 PM PST

A brain implant offers relief to an epilepsy patient

Perovskite Manipulated To Carry Both Electrical and Magnetic Polarization

Posted: 27 Jan 2015 12:00 PM PST

Engineered properties could lead to low-power information storage and processing

When U.S. Telecoms Come Calling, Will Cuba Pick Up The Phone?

Posted: 27 Jan 2015 11:00 AM PST

Diplomacy has paved the way for U.S. technology, but Cuban telecom policies remain unclear

Japan Seeks to Rein In a Solar Juggernaut

Posted: 27 Jan 2015 10:00 AM PST

Japan's government says new solar development rules will preserve grid stability. Critics see an attempt to preserve a leading role for Japan's idled nuclear reactors.

IEEE Spectrum

These Inflatable Pouch Motors Will Make Building Robots as Easy as Using Stickers
How to Wrangle Your Digital Pictures on the Cheap
SpaceX Raises $1 Billion from Google and Fidelity for Satellite Internet Project
Rooting Out Malware With a Side-Channel Chip Defense System
High-Resolution Printing of Quantum Dots For Vibrant, Inexpensive Displays
Privately-funded Solar Sail Prepared For Launch
China Dominates the World of Wind, but the U.S. Wind Energy Market Rebounds
Entanglement On a Chip

These Inflatable Pouch Motors Will Make Building Robots as Easy as Using Stickers

Posted: 27 Jan 2015 09:30 AM PST

If you can put a sticker on an origami, you can build yourself some cool little robots

How to Wrangle Your Digital Pictures on the Cheap

Posted: 27 Jan 2015 08:00 AM PST

Free and low-cost tools for organizing large batches of images

SpaceX Raises $1 Billion from Google and Fidelity for Satellite Internet Project

Posted: 27 Jan 2015 08:00 AM PST

Google and Fidelity's investment will help SpaceX build its newly-confirmed satellite business

Rooting Out Malware With a Side-Channel Chip Defense System

Posted: 27 Jan 2015 07:00 AM PST

A new software-agnostic malware detection tool detects cyberattacks by their power consumption

High-Resolution Printing of Quantum Dots For Vibrant, Inexpensive Displays

Posted: 26 Jan 2015 02:00 PM PST

Creating multicolor patterns and arrays of quantum dot ink could pave way for true QD LED displays

Privately-funded Solar Sail Prepared For Launch

Posted: 26 Jan 2015 01:07 PM PST

A test flight of The Planetary Society's small LightSail Spacecraft is set for May

China Dominates the World of Wind, but the U.S. Wind Energy Market Rebounds

Posted: 26 Jan 2015 01:00 PM PST

Nearly half of all wind power installations in 2014 occurred in China. Offshore projects could drive future growth

Entanglement On a Chip

Posted: 26 Jan 2015 11:00 AM PST

A new microchip component can generate a continuous stream of entangled photons for potential applications in quantum cryptography, researchers say.

IEEE Spectrum

Cautious Optimism About Microsoft's HoloLens
How to Thread a Fiber-Optic Cable Through the Arctic
Watch this Corvette Z06 Test Us, As We Test It
Creadapt: How to Make a Robot That Cannot Be Stopped
Laser-Powered Giant 3-D Display in the Works

Cautious Optimism About Microsoft's HoloLens

Posted: 26 Jan 2015 09:00 AM PST

Google Glass set the bar pretty low. If Microsoft delivers on its promises, Hololens will easily outdo it

How to Thread a Fiber-Optic Cable Through the Arctic

Posted: 26 Jan 2015 08:00 AM PST

A Canadian company has an ambitious scheme to bring two of the world's financial centers a few milliseconds closer together. Here's how they plan to pull it off

Watch this Corvette Z06 Test Us, As We Test It

Posted: 26 Jan 2015 07:00 AM PST

Video-game video, plus analysis, lets Corvette's Performance Data Recorder replay your driving—and improve it

Creadapt: How to Make a Robot That Cannot Be Stopped

Posted: 26 Jan 2015 07:00 AM PST

As long as you're optimistic about the future of robotics, robots that can't be stopped is a good thing

Laser-Powered Giant 3-D Display in the Works

Posted: 26 Jan 2015 06:00 AM PST

MEMS mirrors and three lasers in each "trixel" for massive-scale glasses-free 3-D

Techy at day, Blogger at noon, and a Hobbyist at night

Raider R150 tachometer for BRT solution

Posted: 24 Jan 2015 06:25 PM PST

Raider R150 tachometer is a digital design that works only with the OEM DC-CDI. The input signal pulses for it to work came from one of the output pins of the MCU inside the black box.

Many motorcycle mod junkie that fits aftermarket compatible ignition controller like the BRT, kitti and others do not have that pulse to make the tachometer work again, Hence only some modification is needed.

Figure 1 shows the circuit that may able to use to control and or make the tachometer works and uses LM2917N which is a frequency to voltage converter entirely useful on thise analog tachometer made by TYPE R.

CIRCUIT DESCRIPTION

The signal pin is connected to the primary input of the ignition coil. The meter connection to be use is meter (-) and will be connected to the wire that was supposedly connected on the CDI pin. which is pin 5 wire..calibration is done by VR1, and your done.

CONSTRUCTION

figure 2 shows the typical layout of the circuit.

Image not scaled.

IEEE Spectrum

Start-up Profile: CyPhy Works Builds Tethered Drones for Soldiers, First Responders

Posted: 23 Jan 2015 12:00 PM PST

The company's drone-on-a-string provides an extra pair of eyes in tight spots

News post & update: eleccircuit.com

2W(2 km) 88-108 MHz frequency VHF/FM transmitter

Posted: 23 Jan 2015 09:48 PM PST

This is FM transmitter in VHF range. As Figure 1 Sonar with up to 2 watts, when used with a supply voltage of about 24V. In the case of applications typically do not want a high transmission. This circuit requires only one power supply 9V Only. If used voltage level of the power supply more […]