News post : ElecCircuit.com

News post : ElecCircuit.com

Link to Electronic projects circuits

Digital volume control circuit schematic

Posted: 30 Nov 2015 07:26 PM PST

This is digital volume control circuit that Can be applied to the normal volume of a power amplifier. When press switch S1 adds up the volume and press switch S2 to reduce the volume down. How it works IC1 is a 555 CMOS Timer Single IC will be connected in astable flip-flop model as pulse frequency generator up / down to input pin of the counter IC2-74LS193, through push-bottom switch S1 (Up) and S2(Down). Changing wide of pulse signal from IC1 may replace R1 with potentiometer. To begin with, when we press the switch S1 (increase sound) binary output will be add up and when press switch S2 (Reduce sound) the binary output will low down. The maximum counter to

The post Digital volume control circuit schematic appeared first on Electronic projects circuits.

RobotShop Feeds



 

RobotShop Feeds



Black Friday Treasure Hunt Sale – Free Products Results!

Congratulations to all the customers that found a free product hidden in our product catalog during our Black Friday Treasure Hunt Sale!

Friday Treasure Hunt Sale

Friday Treasure Hunt Sale

You are one of the happy winners of the first edition and should count yourself priviledged. The Treasure Hunt Sale started on Thursday November 26th and many free products left in the first minutes of activating the promotion. Many others left within a few hours leaving only few products 24 hours later. Luckily we still have great specials until the end of the day in our Black Friday Category.

If you are happy with the experience received by RobotShop and would like this promotion to come again next year, please share your experience with others via the following social media:

Twitter: Share your experience and products found @RobotShop

Facebook: Comment on this post with the products you found and share your experience

Google+: Comment on this post with the products you found and share your experience

Hackaday: Comment on your experience and products found, here

Don’t forget to Follow and Like us for information on promotions to come! We appreciate your feedback and thank you for your time.

And now what you have all been waiting for. Here are examples of products that were free for our Treasure Hunt Sale:

 

Grillbot Automatic Grill Cleaning Robot (Red)

Grillbot Automatic Grill Cleaning Robot (Red)

Grillbot Automatic Grill Cleaning Robot (Red)

$120 Value
• World’s first automatic grill cleaning robot
• Includes three powerful electric motors
• Built-in LCD alarm & timer and push-button operation
• Smart computer technology to regulate speed & direction

Aisoy1 Programmable Humanoid Robot DIY Kit

Aisoy1 Programmable Humanoid Robot DIY Kit

Aisoy1 Programmable Humanoid Robot DIY Kit

$175 Value
• Ideal kit for programming, robotics and artificial intelligence
• Autonomous in taking decisions and feelings with Airos1 engine
• Compatible with ROS, internet enabled, Bluetooth and much more
• Includes multiple sensors and actuators like accelerometer, touch sensors

Parallax Propeller C3 Full Kit

Parallax Propeller C3 Full Kit

Parallax Propeller C3 Full Kit

$168 Value
• Credit-Card-sized Computer
• Onboard peripherals to facilitate large scale and complex applications
• Contains C3 Board, C3 Prototype Board and C3 Acrylic Enclosure

DFRobotShop Omni 2.0 Upgrade (40mm Wheels)

DFRobotShop Omni 2.0 Upgrade (40mm Wheels)

DFRobotShop Omni 2.0 Upgrade (40mm Wheels)

$160 Value
• 40mm Omni wheel upgrade for DFRobotShop Rover
• Uses four 40mm omni-directional wheels
• Soldering is required

Lynxmotion Hunter VTail 500 Drone Kit (Hardware Only)

Lynxmotion Hunter VTail 500 Drone Kit (Hardware Only)

Lynxmotion Hunter VTail 500 Drone Kit (Hardware Only)

$100 Value
• VTail 500 Frame and mounting hardware
• Create your own custom VTail 500 quadcopter
• Requires: electronics, motors, propellers, battery

Bloom Necklace for Shine Activity / Sleep Monitor

Bloom Necklace for Shine Activity / Sleep Monitor

Bloom Necklace for Shine Activity / Sleep Monitor

$80 Value
• Necklace for Shine activity / sleep monitor
• Crafted from hand-finished stainless steel
• Comes with a 18″ stainless steel chain with 2″ extender
• Matches any Shine color

Hubsan Q4 Nano QuadCopter

Hubsan Q4 Nano QuadCopter

Hubsan Q4 Nano QuadCopter

$30 Value
• Tiny miniature Quadcopter
• 4 channel beginner friendly
• Charge time: 30 minutes
• Flight time: 5 minutes

WheeMe Massage Robot (Red)

WheeMe Massage Robot (Red)

WheeMe Massage Robot (Red)

$60 Value
• White/Red color massage Robot
• Palm-size robot that gently massages
• Safe and easy to operate
• Automatically and silently steers itself over your body

WowWee RoboZombie Orange and Silver Robot Toy

WowWee RoboZombie Orange and Silver Robot Toy

WowWee RoboZombie Orange and Silver Robot Toy

$50 Value
• Light up eyes and robotic zombie sounds
• Use your Zombie Blaster to fire at RobotZombie and hit the weak points
• Ages: 6 and Up

Tokuyi Basic Robot Sweeper

Tokuyi Basic Robot Sweeper

Tokuyi Basic Robot Sweeper

 $95 Value
• Compact and simple robot sweeper for automatic cleaning
• Provides 3 working modes: 10min, 20min, Max
• Clean efficiency: 99%
• Super slim: 65mm (height)

Ubooly Smart Toy (Pink)

Ubooly Smart Toy (Pink)

Ubooly Smart Toy (Pink)

$30 Value
• Ubooly smart voice interactive pet toy (pink) for smartphone
• Tells stories and jokes, plays games, cuddles
• Smartphone brain and cuddly body

Tin Robot Lunch box

Tin Robot Lunch box

Tin Robot Lunch box

 

$15 Value
• Classic tin lunch box to keep your food safe
• Plenty of space for all of your lunch essentials
• Perfect gift for kids big and small
• Stylish lunch box to carry around your lunch in style

Sensor Guided Vehicle Chokomacar

Sensor Guided Vehicle Chokomacar

Sensor Guided Vehicle Chokomacar

$15 Value
• Sensor guided vehicle chokomacar
• Runs along a line using an optical sensor
• May be the simplest line tracer in the world
• Explains about electrical circuits

PC Programmable Line Tracing Robot

PC Programmable Line Tracing Robot

PC Programmable Line Tracing Robot

$28 Value
• PC programmable line tracing robot
• Program the robot wirelessly using just your computer screen
• Compatible with Windows XP/Vista/7 via a drag and drop feature
• Detects a black line drawn on a white background using light sensors

Anki DRIVE Rho Expansion Car

Anki DRIVE Rho Expansion Car

Anki DRIVE Rho Expansion Car

$58 Value
• Rho expansion car, the ultimate defender
• Great tenacity and staying power with supercharged accelerator
• Includes charging case and rechargeable battery

6 In 1 Educational Solar Kit

6 In 1 Educational Solar Kit

6 In 1 Educational Solar Kit

$11 Value
• Build 6 different models: windmill, revolving plane, airboat, plane, car, and puppy
• Comes with solar module and gear box
• Great toy and education tool for children

Spark Core Internet Project Maker Kit

Spark Core Internet Project Maker Kit

Spark Core Internet Project Maker Kit

$99 Value
• Core maker kit for Internet-enabled projects
• Core development kit with CC3000 Wi-Fi module
• Resistors, capacitors, sensors and more are included
• Comes in a super-neat project carrying case

Dagu Mr. General Mobile Robotic Platform

Dagu Mr. General Mobile Robotic Platform

Dagu Mr. General Mobile Robotic Platform

$60 Value
• Designed around the Picaxe 28X1 although many different processors can be used
• Features two standard micro servos for the pan/tilt assembly
• Uses two continuous rotation servos for movement

 

And many more!

     
 
 
   
 

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IEEE Spectrum

IEEE Spectrum


A Blast of Plasma Makes Plants Grow Faster

Posted: 30 Nov 2015 06:12 AM PST



Scientists in Japan zap seeds with cold plasma device to shorten harvest

Mobile Phone Data Predicts Poverty in Rwanda

Posted: 30 Nov 2015 05:00 AM PST



Wealth and poverty maps from mobile phone metadata could guide economic policy

IEEE Spectrum

IEEE Spectrum


Early Recording Technology’s Killer App: Opera’s Enrico Caruso

Posted: 27 Nov 2015 08:00 AM PST



Hit Victrola records made owning music fashionable

2015 Holiday Gift Guide

Posted: 26 Nov 2015 12:00 PM PST



IEEE Spectrum's roundup of gadgets for the techie in your life

News post : ElecCircuit.com

News post : ElecCircuit.com

Link to Electronic projects circuits

High Temperature fire Alarm Circuit using transistors

Posted: 26 Nov 2015 09:07 PM PST

This is high temperature fire alarm circuit, when the temperature rise exceeds the limit, it will sound the siren rang out. It is easy to use with transistor circuit to detects heat. Then, a loud noise of the sirens with IC packages. How it works We uses the combination between Q1 (BC109), which is silicon NPN transistor and Q2 (AC188) which is PNP germanium transistor To detect heat in case of fire. Then, the siren will sound warning beeps. The collector lead of Q1 is connected with Base lead of Q2, while the collector lead of Q2 is connected with the relay-RY1. The second section circuit include with IC1-UM3561. Which is siren generator IC or a machine gun at pin

The post High Temperature fire Alarm Circuit using transistors appeared first on Electronic projects circuits.

IEEE Spectrum

IEEE Spectrum


How Neuromorphic Image Sensors Steal Tricks From the Human Eye

Posted: 26 Nov 2015 08:00 AM PST



By prioritizing the dynamic parts of a scene, machines can capture images more efficiently

Rushing to Join the IoT: Web-Enabled Window Blinds

Posted: 25 Nov 2015 02:00 PM PST



Two San Francisco startup incubators, two companies from Estonia, and two low-cost approaches to one idea: connecting existing window shades to the Internet

Bitcoin Mints New Words

Posted: 25 Nov 2015 12:00 PM PST



The digital currency is at the center of linguistic, as well as financial, innovation

Ultrasound Microscopy Helps Image Tiny Blood Vessels

Posted: 25 Nov 2015 11:00 AM PST



The new technique could help scan for cancer, stroke, heart disease

FAA Task Force Recommends Registration for All Drones 250 Grams and Up

Posted: 25 Nov 2015 09:15 AM PST



We take a close look at the FAA Task Force recommendations for mandatory drone registration