Great tool to play with biosignals – biomedical shield for arduino

Medical equipment is expensive and not always accessible for wide audience. In fact in any biomedical measuring instrument there are nothing very special – here you can find ADC, analog front-end with low noise op-amp, some sort of controller. But the main part what makes it different from consumer electronics is safety. Because device is connected to your body through some sort of electrodes, there is always a risk of electric shock. So power supply has to be isolated if it is powered from mains. There might be other additional safety circuitry to prevent possible hazard. And of course there are many safety regulations ans certificates to overcome before device can be used with patients. This is where main cost comes from. It doesn’t mean that you cannot experiment with your body signals. You only need to know what are you doing. If you are building your own circuit to…

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DIRECTV, Streaming Services and Internet Providers – 9 Easy Ways to Save Money

Today, the internet is one of our main forms of entertainment, with games, quizzes, TV shows, movies, and much more content available online for us to enjoy. But, TV and internet can quickly become very costly, so if you’re getting set up to go online in your new home or are switching your TV provider, internet company or both, saving money is probably going to be one of your top priorities. We’ve listed some of the best ways to save money on your television and internet. TV and Internet Bundles: One of the best ways to save money on your TV and internet is to get a bundled package, for example, this one available from Hdbundles.com. When you purchase a package deal, you can usually find some exclusive special offers, for example, you could enjoy limited free access to premium channels, catch up TV, and more. DIRECTV, for example, offers…

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Implementing logistic regression learner with python

Logistic regression is a next step from linear regression. The most real life data have non linear relationship, thus applying linear models might be ineffective. Logistic regression is capable of handling hon linear effects in prediction tasks. You can think of lots of different scenarios where logistic regression could be applied. There can be financial, demographic, health, weather and other data where model could be applied and used to predict next events on upcoming data. For instance you can classify emails in to span and non spam, transactions being fraud or non, tumors being malignant or benign. In order to understand logistic regression, let’s cover some basics, do a simple classification on data set with two features and then test it on real life data with multiple features.

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5 Coolest Attachments for the iPhone 7

According to leading mobile and technology news source BGR, the iPhone has become a more successful and popular device than analysts initially predicted. Demand for the device is still high, and so are the accessories and attachments that work with it. From checking your heart’s EKG to printing photos on the go, here are five of the coolest attachments for the iPhone 7. Kardia Band Check your EKG right from your Apple Watch that integrates with your iPhone 7. The medical-grade EKG features a sensor to monitor your heart during exercise or on the go. While this feature can be useful for fitness enthusiasts, it can also help save your life. Kardia Band allows users to record information about their heart and can instantly detect the presence of AF, which is a common cardiac arrhythmia that can lead to a stroke. It can be difficult to remember exactly what’s going on as you’re…

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Getting to know about Medical Alert Comparison

This platform has been developed keeping in mind the needs of the seniors and the elderlies. In order to provide them convenience and efficiency this virtual platform was developed to offer them a reliable medical alert system. It has helped many seniors in more than one ways, giving their health and lives the first priority, which was the main aim behind the creation of Medical Alert Comparison. The professionals working for the entity have the same objective and goals that are communicated to them clearly and thus, they work towards it with dedication. The services offered by this entity are reliable and trustworthy. Also they are cost effective and are offered nationwide for the ease of the seniors and their loved ones. The entity ensures minimal time response against the queries and services of their clients. It also offers a free custom quote to its clients. This free custom quote…

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General requirements for handling LiPo, LiIon and LiFe batteries

When going portable with your electronics projects or diving in to RC hobby you eventually have to deal with batteries. No secret that best what is available today is lithium batteries. They come in many flavors. Why use lithium battery instead of alkaline or NiMh rechargeable? The short answer is – energy density. Lithium Ion batteries can store large amount of energy comparing to its weight and can give out large currents. This technology made it possible to enjoy long and powerful RC model (like quadcopter) flights. To achieve same results with NiMh it looks almost impossible due to weight and low current output. Lithium battery technology is constantly improving as different chemistry is used. You can find lots of info about different chemistry of Lithium Ion batteries so we won’t be getting into this.

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Considering Solid-State Relays (SSR) for your projects

Using relays are common way of switching high power loads with electronics. If you take any microcontroller or any other digital IC, you will see that their output current on single pin is very limited – varies around 20mA. Same situation is with voltage. Digital pin output voltage is limited to IS supply voltage like 3.3v or 5V. Usually we need to switch loads that draw significantly higher currents and are powered from higher voltage supply. And there you have several options for switching loads. One and most oldest method is using mechanical relays. They are still very popular way of switching power electronics. One biggest disadvantage of using mechanical relay is that it has moving parts with all rising problems. These are: slow switching time; relatively high control current; noisy; may produce sparks on switching; sensitive to environment factors like vibration, humidity; To overcome those problems there is more…

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