September 22, 2015
Most of us grew up around old school baby monitors: the walkie-talkie like devices that would broadcast a baby’s cries from the parent’s bedside receiver. Pretty basic stuff.
The baby monitor has come a long way from its humble beginnings, though, and a new crop of wearable gadgets is making infant monitoring smarter—and more convenient—than ever. Here are four baby wearables we’d love to have around with a new baby in the house.
September 18, 2015
Since when did that stop us having fun blowing bubbles?? Obviously, this project is fun to be automated using this fun little toy.
This cute project was an automated Disneyland bubble gun with an Arduino, a servo, and 3D printing. So after taking some measurements with trusty calipers, the designer got on the computer and started designing an enclosure for the bubble gun. It’s pretty simple. He designed it to hold the bubble gun in place, and allow him to attach a small RC servo motor in order to trigger the switch. Hooking that up to an Arduino Micro and he was now able to trigger it remotely. He even coded while he waited for the parts to print out.
Assembling this was not that long because this project took only 2 hours and you would not even notice the time especially when you are having fun seeing your favorite Disney character transform into something more cute and funnier toy.
September 14, 2015
MOVI (My Own Voice Interface) is the first standalone speech recognizer and voice synthesizer for any Arduino project or Raspberry Pi with full English sentence capability.
The project claims to hold up to 200 English sentences, and also have features such as it is speaker independent, standalone, cloudless and private, and it is very easy to program. Basically, this is a plug and play kind of device like by just connecting the shield to Arduino or any compatible board. Furthermore, MOVI is speaker independent, it will respond in the same way to the same sentences, irrespective of who is saying them.
This little beauty will be able to recognize hundreds of sentences of the user’s choice, where these can range from simple and generic to complex and specific.
September 14, 2015
If you’ve ever built a serious one, you know there are two problems: one is you need a variable capacitor and the other annoyance is that if you cover a wide frequency range, you probably need more than one coil.
The author uses a coil with a single pole double throw switch to bandswitch a single coil. There is no traditional main tuning capacitor. Instead a 1SV149 varactor provides the radio’s main tuning capacity. He post details how he got to the final design, starting with the idea, and detailing the original design and the changes he made along the way. He also used data from an earlier build to limit how much the regeneration control has to be changed over wide frequencies and details how that changed the design.
There are certainly simpler regenerative receivers out there. However, the sophistication of this design along with the details of the designer’s thought processes makes this an interesting project.
September 13, 2015
If you’re tired of forgetting your house keys or garage door opener, this project shows you how you can make your finger the only thing you need to access your abode.
The build requires some soldering, wiring, uploading code to an Arduino, and circuit board construction, but the end result sure is impressive. The fingerprint-scanning door opener was designed originally as a replacement for a garage door opener, but this motorized lock project could be altered for use on other doors. The 3D-printed case is surprisingly sleek, and now you have your own version of this geeky gadget.
These devices recognize only the fingerprints that you program into them, and they’re easier to work than a standard keypad-based entry system is, because there are no number codes to enter or remember. They also eliminate the possibility that someone will lend out your access code.
September 13, 2015
Oscilloscope is a type of electronic test instrument that allows observation of constantly varying signal voltages, usually as a two-dimensional plot of one or more signals as a function of time. Non-electrical signals (such as sound or vibration) can be converted to voltages and display. While cathode ray tube (CRT) is a vacuum tube containing electron guns and phosphorescent screen used to view images.
This project can be easily done as long as you have the materials and knowledge when it comes to wiring. Assembling this may not take a lot of your time, starting with the identifying and placing the wires.
Before going into details about the method of construction, a safety warning. Televisions are dangerous if you open them up, and opening up a television set without making the correct precautions first can be hazardous. Electricity is also dangerous, so you should be sensible about that too.
September 12, 2015
How good it is to feel building a cheap DC millivolt source without damaging your pockets? Its components can be found in a lot of electronic shops with vast range of components and prices are very low.
As an accurate millivolt source, can be used for many applications including thermocouple simulation, chart recorder calibration, A/D converter and DMM calibration, and as a stable voltage for backing off DC offsets.
This project was made with materials commonly found and cheap. He used Bourns, as the most expensive component because it is known for its reliability and durability but for some other option any 10k linear multi-turn potentiometers can also be used with this circuit. An external DC power source was needed like 9-25V single rail power supply to drive this circuit.
Everyone can easily build this DC millivolt source using PCB as the most recommended way to construct this project.
September 11, 2015
There are a variety of gloves which can be used for capture of hand motions. This project has brought its motion capture technology out of stealth with a sensor-laden glove that tracks your hand movements down to the finger.
This article presents the design of a wearable glove-based multifinger-motion capture device .It is an open motion-capture glove that was intended to be a full-featured, hacker-friendly user-input and sensor platform. It would allow your fingers, hands, and arms to move within the virtual environment you see, and to move objects around within that virtual environment. While wearing a device on your hands isn’t as convenient as current camera-based solutions, it has the potential to be more dependable.
This project should provide comfort that virtual reality will be ubiquitous in the near future and shows that virtual reality will be an important part of social interaction and communication in the future.