PiTFT，a Made-To-Measure touch screen for raspberry pi

When it comes to raspberry pi touchscreen, all of us will think of sainsmart. As a person who is start to play with Python and understand everything slowly. I have faced some problems and I need some advices.


The first problem is to have a raspberry pi touchscreen. I have looked a lot of different touch screens. However, it is difficult to get them to work. One requirement is access to the GPIO pins but the main one is easy to setup.

The second problem is I need a tutorial on how to make the touchscreen work in Python or other computer programming language. I want to put some graphic buttons on the screen that when I touch one of them the program executes an associated routine. I have searched but found nothing about it.

The third thing is about printer and this is why the need for the GPIO pin accessibility with the touchscreen. It will be better to have a small thermal printer can connect and print code easily. I know this a lot and I want to put together a tutorial on how to setup touch buttons on the screen.

All of these troubles have been solved until I found a PiTFT for raspberry pi which has a 2.8" display with 320x240 16-bit color pixels and a resistive touch overlay. The plate uses the high speed SPI interface on the Pi and can use the mini display as a console, X window port, displaying images or video etc. It can works well with the Pi Model A or B and it also fit the Model B+ perfectly.

Good wine needs no bush

Many people regard the Arduino controller board as a microcontroller, but this really is not true. In fact,the Arduino board can be a specifically created circuit board for programming and prototyping with Atmel microcontrollers.
The nice detail regarding the Arduino board is that it can be cheap, plugs straight right into a computer's USB port, and it is actually not different to setup and use (in comparison to other improvement boards).
The good Arduino Uno must have these features:


An open supply structure. The benefit of it getting open resource is usually that it's a large local community of folks working with and troubleshooting it. This tends to make it quick to locate somebody that will help you debug your projects.
An simple USB interface . The chip on the board plugs straight into your USB port and registers with your computer to be a virtual serial port. This allows you to definitely interface with it as by way of it have been a serial machine. The good thing about this setup is that serial interaction is really an exceptionally easy (and time-tested) protocol, and USB makes connecting it to modern day computer systems seriously effortless.
Very convenient power administration and built-in voltage regulation. You could connect an exterior electricity source of approximately 12v and it'll control it to each 5v and 3.3v. Additionally, it is often driven immediately off of the USB port devoid of any external electrical power.
An easy-to-find, and dirt affordable, microcontroller "brain." The ATmega328 chip retails for approximately $2.88 on Digikey. It's many quantity of awesome components features like timers, PWM pins, external and inside interrupts, and various slumber modes. Look at out the formal datasheet for more particulars.
An ICSP connector for bypassing the USB port and interfacing the Arduino directly to be a serial machine. This port is important to re-bootload your chip if it corrupts and can now not speak to your computer.
An on-board LED attached to electronic pin 13 for fast an uncomplicated debugging of code.
And the last, but not least, a button to reset this system around the chip.

A stitch in time saves nine

Having an arduino exe error is the most boring thing to lots of users who like arduino projects, especially with no advance notice. If you are not a computer specialist, the most annoying problem you have to face is you have got no exactly clue what the question is and how to deal with it. If this is a challenge you have been experienced, just continue reading - I'll shortly present you an innovative but user-friendly way which can help you get rid of the problem.

The method most of the people use when this takes place is to look for the internet, hoping to seek out an answer, or enlist the assistance of a laptop expert. Initially let me say, you should not waste your money on the repair service assistance - hold on to your mend fund to something else. Let me explain the deep factor of this problem, and what you can do to fix it.

It is always the case that once your Personal computer 'suffers' an arduino exe mistake, there is a good chance that you have some difficulties with your windows registry. The computer registry is probably the primary features of your system. This component of your computer is billed with maintaining observe of one's several software program and components set-ups, upgrades, removals, etc. One occasion of the corrupted registry is that the windows unable to find the directories pointing to an .exe for a system you want to operate - it is the main point which leads to these difficulties.
This is the root of this problem and why it results in an arduino exe error. You had better to have a professional tool which called registry fix tool to solve the trouble. It’s very convenient and easy to use.

Working with movement sensor arduino

At present, arduino sensors exist right here and there. Mainly because its crucial programs, automation with the usage of sensors is currently being the craze. Sensor, which often can perception the calculated facts and converted this information and facts into electrical signal. By far the most significant software areas of sensors are largely related for the industry of machinery manufacturing, automotive electronics sector, professional medical devices and interaction know-how.

No cost scales MMA955xL smart motion-sensing system for cellular equipment, could be the industry's 1st built-in MEMS accelerometer, 32 Cold Hearth embedded arduino microcontroller, flash and control other sensors committed infrastructure sensing platform. MMA955xL available free-fall detection, tilt and 3D orientation detection, faucet and double faucet detection, useless reckoning, shock testing, vibration and sudden motion detection and electricity administration.

Lately, many applications in good telephones, pill computers, moveable activity consoles headed detected acceleration, angular velocity together with other sensor data widely applied. The varied physical changes from the sensor is produced by application of a sign changing aspect, in an effort to make the most of the little sign output, these indicators has to be amplified. An amplifier disposed within the sensor once the sensor is used to amplify the sign, although the compact signal should be amplified with superior precision, then the necessity to elaborate modeling techniques.
Obviously, working with movement sensor arduino might also make movement happens to be digitized, after which later on locate new apps to share with you.

A guide to saving your money from Yasurs

1 Please register an account before join the activity. You will get 10 reward points (100 Reward Points=$1.00) if you do that. 2 What’s more, we will give you 100 Reward Points if you share our group-buying page on Facebook, Twitter, Google+ etc. After you did that, please post a screenshot to our service email: support@yasurs.com, we will recharge 100 Reward Points to your registered account. 3 The price will be reduced if the sales volume reaches to a certain standard. Read more details in the group-buying page. 4 Please remember: every registered account can be used only once. One month later, we will make the price back to normal, so take the chance and move quickly! Here I will show you how to join the group- buying activity, let’s take Lenovo S90 as example: First, you will see our home page, click the Group Deals button after you have a registered account.

And then, you will see another page as follow


Click here and you will get this:

On you left hand you will see a picture which has a pattern of 600. It means that we have 600 phones in stock. On the right hand are the group-buying rules which can tell you that the price will be reduced by $5 if the sales volume becomes half of the stock. What’s more, you can use credit card to earn $10 cash back as Christmas gift when the sales volume is equal to the stock. According to different products, we have different rules.
The last but not least, our event date is: 24/11/2014 — 25/01/2015
Time and tide wait for no man, and an opportunity is easier lost than found. So take the chance and action quickly! In the end, all of our stuff from Yasurs wishing you and your family a very merry Christmas!

Four ways to let your Arduino work for a long time

Generally speaking, an Arduino does not consume so much power. However, if you want to start something which needs to run with battery, the power consumption is the most important problem. It is not easy to calculate the amount of time an Arduino will continue because there lots of types.

Before we tell you the ways to make Arduino conserve power, I will discuss some easy but more direct methods. The first one would be to use a suitable Arduino. The 3.3 volt Arduino will use less energy than a 5 V Arduino for a certain kind of application. The Arduino Nano and Arduino Micro will use less energy than the Uno and Mega, and if they work for your needs this will be better.


The second way is to use a suitable battery. When it comes to battery, most people think that lithium-ion batteries are the best for anything. Lithium-ion batteries are great for possessing a very high power. It is true when you work on some arduino projects like robots. However, a lead acid battery which is similar to the one in your car or truck will be a better choice if the battery doesn’t need move.

You can also ignore everything except the processor chip to save the power. In fact, do this by avoiding the power connector but providing energy to the processor with power you must be cautious here that you stay inside the operating limitations of the given chip.

The forth way to reduce power consumption is to lower the clock speed. If you don’t need the Arduino work at its maximum clock speed, it can be accomplished with the pre-scaler library. You can reduce the clock speed as much as 256, this will decrease a sixteen Megahertz Arduino to a 62.5 kHz one, but when you find yourself just checking a measurement every 25 seconds or so, which is more than enough, and this will decrease consumption significantly.

Two Ws, help you get started with Arduino

When it comes to Arduino, do you feel upset as a novice? Don’t worry! Here I want to teach you how to get start with Arduino through two Ws. That is, where to learn and what to buy.
First question, where to learn? I think the best and easiest way is the internet. As we all know, with the development of technology, internet become more and more popular and play a more important role in society. You can almost get everything you want from the internet. Many people want to share their experience online. There are also some forums here to give you lots of treasure advices.
Second question, what to buy? This is the basic for learning the platform.

1, you must have a controller board. There are two main controller boards in the market: The Uno and the Due. The Uno has an ATmega328 microcontroller, which has merely 2K of system memory and 32K of flash memory. The Due, which has a 32-bit ARM processor with 50k of SRAM and 256k of flash memory, built around the SAM3X8E ARM Cortex-M3 microprocessor. It has three times I/O pins than Uno, so no matter how many servos, sensors you want to add, you can make it.
2, a breadboard is needed. The breadboard, which has a plastic block with holes in it and sprung metal connections behind, can make us build our complicated circuits directly, instead of soldering. So we can build the Arduino project on the breadboard rather than twisted wires.
3, that would be better if you get some solid-core wire and some wire strippers with you. You also need pliers to cut and remove the insulation from the ends of the wire.
4, in order to understand the layout of the circuit easily, you’d also need some wires of different colors, red for all wires connected to the positive side of the supply, black for negative, and some yellow for other connections.
That’s all you need to buy! I recommend you get them from Yasurs, where you can find every component you need. You will certainly have a perfect user experience here. I promise you.