How to Control Raspberry Pi 3 from Laptop

Hello everyone, I hope you all are doing great. In today's article, I am going to show you How to Control Raspberry Pi 3 from Laptop or Computer. In our previous tutorial, we have seen How to setup 7 inch HDMI LCD with Raspberry Pi 3 and you must have noticed that designing your code on TFT LCD is quite difficult. So, either you have the LCD or not, its always better to work on your Laptop. In order to control our raspberry Pi 3 from Laptop, we have to use VNC server & client. It's a third party tool designed by RealVNC. We have to install VNC server on the raspberry Pi and VNC viewer on our laptop & after that we can quite easily control our VNC Server from VNC Viewer (Client). So, let's get started with How to Control Raspberry Pi 3 from Laptop using VNC Server & Viewer:

How to Control Raspberry Pi 3 from Laptop

  • As I have told earlier, in order to control Raspberry Pi 3 from Laptop, we have to install two things:
    • VNC Server on Raspberry Pi 3.
    • VNC Viewer on Laptop.
  • If you have already setup your 7 inch HDMI LCD, then first thing you need to do is, you need to connect your raspberry Pi with your Wifi.
  • Simply Click on the Internet Access in the toolbar and then connect to your Wifi as you do in your laptop.
  • Now, one you are connected to internet, now you need to open your LX-Terminal and then type this command in it:

sudo apt-get update

  • The above command will simply update the package, as shown in below figure:
  • Now we are gonna install tightvncserver on our raspberry pi 3, by using the below command:

sudo apt-get install tightvncserver

  • When you will enter the above command then VNC Server will be downloaded on your Raspberry Pi 3, and after that it will ask Do you want to continue, as shown in below figure:
  • So, press Y as yes and it will install the VNC Server on your raspberry Pi 3, as shown in below figure:
  • It will also ask for the password and I have given it "12345678".
  • As you can see in the above figure that we have successfully installed VNC Server on your Raspberry Pi.
  • Now in order to start vnc server on your raspberry pi 3, you have to use below command:

vncserver :1

  • Now we have to install VNC Viewer on our laptop, so download VNC Viewer for Windows and install it on your laptop.
  • Once its installed then open your VNC Viewer and then click on File in top menu bar and then New Connection.
  • It will open up a new window to add new connection, as shown in below figure:
  • In the IP address section you have to enter the ip address of your Raspberry Pi and then place :1 after that.
  • In order to find the ip address of your raspberry pi 3, you can use the below command:

sudo ifconfig

  • I have shown the results in below figure and you can see ip address of our raspberry pi is written in the second line of wlan0.
  • So, we have gotten the ip address, enter it in the VNC Viewer and give it some friendly name, I am giving it pi, as shown in below figure:
  • I am again mentioning this this here that you have to place :1 after your ip address.
  • Now click OK button and then right click your newly created connection and then click on the Connect, and it will start connecting to your Raspberry Pi 3:
  • It will show you a warning pop and you need to click Continue, as shown in below figure:
  • You can also tick the checkbox, if you don't want it to appear again.
  • After that, it will ask for the password, which we have set while installing it and it was "12345678", so simply enter that password, as shown in below figure:
  • Now click OK and your raspberry Pi 3's desktop will open up in front of you, as shown in below figure:
  • So, that's how you can quite easily control your raspberry pi 3 from laptop. Now you can write your codes from laptop.
Let me summarize everything. In today's tutorial, we have seen How to Control our Raspberry Pi 3 from Laptop and we have used VNC Server & Viewer in order to do that. But you must have noticed that in order to install the VNC server on raspberry pi 3, we have to use HDMI LCD. So, what if you don't have this HDMI LCD? In the next tutorial, we will have a look at that and we will see How to control Raspberry Pi 3 from Laptop using Ethernet. So, that's all for today. Take care and have fun !!! :)

WellPCB Prototypes Promotion - Get Discounted PCB

Hi Guys! We always keep on working to find useful ways that give you quick and economical solutions to your needs. Today, I am going to give a quick review about WellPCB and why you prefer them if you intend to making high quality PCBs with reasonable price. Where there is a need of electronic devices, there is a need of PCB. Joining number of components on board using old conventional with end to wiring is becoming obsolete that happened to cover more space, carry heavy weight and turned out to be expensive with the ability to performing less number of functions. This led to the introduction to printed circuit board.

WellPCB Prototype Promotions

PCB is an integral part of most of the electronic devices, specially when you are looking to make some smart and compact projects with the intention of joining number of components on the board. You may feel skeptical while picking suitable fabrication house for the fabrication of your PCB that keeps your needs and demands on the top without compromising the quality. There are number of fabrication houses around the world. Some are better than others. Reason is quite clear. The fabrication houses that are successful in the field of fabricating quality PCB, follow some protocols and take strict measures when it comes to creating a quality product. WellPCB is one of them. Their main aim is to keep the standard high without compromising the quality. Also, they believe, nothing is better than giving quality product while keeping the price intact.
Promotions
First thing first. They are running two promotions recently. First promotion you can get benefit of, will expire on 30 June. Come first to get advantage of this promotion. Based on this promotion, you can get 10 pcs prototypes with size SIZE =10cm*10cm and 1-2 layers in just $3.99. Also, it is valid for 100 customers. Times is precious, don't waste it, make your order quickly to fall under the category of early birds in order to save your money. Second promotion is also mouth watering, if not for all, but saving $100 are enough to arrange your next meal. You can get $100 coupon by registering directly on their page. You can use it freely when you reach a specific amount.
Ordering Process
Ordering process is very easy and hassle free. They don't have any hidden charges. Feel free to order online without fear of paying any extra hidden charges. Check following image to get the idea of ordering process. Don't you worry if you are unable to order online by following above steps. They have video on their front page, you can watch that video where they guide you thoroughly how you can order online. You can quote from here PCB Online Quote
Types of Files They Accept
They make everything easy for you right from taking the order to the manufacturing of the whole product. They accept four types of files for the PCB prototype manufacturing including gerber, pcb, pcbdoc, and cam file. They keep strict eye on the whole manufacturing process and maintain quick follow up with all of the customers and inform them immediately if they find any difficulty in the manufacturing process. It may happen, the files you send may not resonate to fulfill the technical requirement of the board, so they don't feel hesitation to have a proper word with you in order to make you satisfied with the manufacturing process, so final product resonates with your demands and needs without compromising the quality.
What they can Deliver
They have the capability to make PCB incorporated with up to 32 layers. Still, if you think, your requirements are slightly different than available layers specification, you can contact them. They will try to incorporate all of their expertise and knowledge into meeting your requirements and making the product fit for your project.
Material Used
Substrate material they use range from FR4 to Rogers to High TG FR4 and Halogen free material. These are the basic material used for the making of substrate. However, this is not the only solution they provide, you can choose and pick any substrate material that resonates with your demands.
Advanced Technology
Advanced technology they use helps them stand out from other with the intention of providing accurate and precise results. They have a team of experts who are proficient in their craft and know very well which measures and protocols need to be followed for providing quality product. They are capable of producing on-across blindried vias on multiple boards ranging from rigid, flex to rigid-flex board. You can pick any solder mask color from number of different colors available like green,blue, black, white, yellow. Surface treatment includes HAL, Lead Free HAL, Immersion gold, OSP, Immersion tin, Immersion silver, etc.
Accurate Copper Traces
Not everyone is expert when it comes to making copper traces on the board that have low resistance. They have a technical team who are expert in making copper traces that are equally distributed on the board and come with the ability of controlled impedance. High current that flows through the board can cause high temperature that can ultimately damage the project and effect the overall performance of the board. The board they create come with a high copper thickness that helps in avoiding the high temperature as a result of high current flowing through the boards, specially that are made from multilayer.
Quick Delivery
Some customers are highly concerned with the delivery time because of the sensitivity and requirements of the projects they get from their clients. Quick and fast delivery is another aspect where they stand out from others. Lead time is as quick as 1 to 2 days, but it can stretch to 5 to 6 days, based on the requirements and complexity of the order. Quotation will be provided in 8 working hours. Rest assured, you will get the order within due date. That's all for today, I hope you have found this article useful. We always keep your demands and requirements on the top and provide you most suitable solutions. WellPCB is one of them, specially when you are concerned with high quality product. However, if still you feel skeptical or have any question you can approach me in the comment section below. I'd love to help you according to best of my knowledge and expertise. Feel free to keep us updated with your suggestions, they help us provide you quality work so you keep coming back for what we have to offer. Thanks for reading the article. Stay Tuned!

Introduction to 1n751a

Hey Friends! We welcome you on board. I am back to give you daily dose of information. Electronic components play an important role in the designing and working of electronic projects. Today, I am going to unlock the details on the Introduction to 1n751a. It is a zener diode, also known as highly reliable voltage regulator, which is mainly used in industrial, commercial, entertainment and computer applications. It is slightly different than regular diode, as regular diode conducts in only one direction while zener diode can conduct in both directions. I will discuss every aspect related to this zener diode, so you don't need to go anywhere and find all information in one place. Let's dive in and explore, what is it about and what are its main applications?

Introduction to 1n751a

  • 1n751a is a zener diode which is also referred as highly reliable voltage regulator, mainly used in industrial, commercial, entertainment and computer applications.
  • It comes with a very sharp reverse characteristics, which makes it an ideal choice for voltage stabilization applications.
  • This zener diode is a p-n junction diode which is capable of conducting in both directions i.e. forward direction and reverse direction.
  • However, making it operate in reverse biased condition is little bit tricky because reverse breakdown voltage must be achieved in order to operate it in reverse biased condition.
  • One important feature that makes this zener diode ahead of regular diode is that voltage drop across the zener diode doesn't change over a wide range of voltages, which makes it suitable and highly effective for voltage regulation applications.
  • This zener diode works in breakdown voltage and is an ideal choice for generating reference voltage.
  • Most of the electronic circuits are equipped with this zener diode because it prevents them from over voltage.
  • This zener diode comes with 1.5 forward voltage at 200mA and votlage tolerance appears to be 5%. And reverse leakage current is 1 µA at 1 V.
  • It features very effective working characteristic and comes with a power of 500 mW.
Working of 1n751a
  • Working of this zener diode is quite identical to normal diode with one exception - it conducts in both directions.
  • This zener diode acts like a normal diode in forward biased condition.
  • It will only allow the conduction in the reverse direction when reverse voltage reaches to the breakdown voltage, allowing the current to flow from cathode to anode.
  • Over a wide range of applied voltage, current reaches to maximum point and stabilizes itself after a certain amount of time, making it suitable for using as a voltage stabilizer.
  • Zener breakdown effect is the main cause of voltage breakdown. However, it can also occur due to impact ionization. Both mechanism come into play at 5.5 V and come with same feature and don’t need different circuitry for working efficiently. However, temperature coefficient is the main feature where both mechanism differ. Zener effect shows negative temperature coefficient while impact ionization shows positive temperature coefficient. Both effects cancel each other at 5.5 V, helps zener diode achieving the most stable state over a wide range of temperatures.
Applications
This zener diode comes with a lot of applications and used in electronic circuits in different forms ranging from voltage regulator to waveform clipper to voltage shiftier. However, mainly it is used for voltage regulator. Let's discuss, how it is used in different form in electronic circuits.
1. Voltage Regulator
  • When zener diode is connected in parallel with the voltage using reverse biased mode, it will be capable of starting conduction when voltage equals to a breakdown voltage.
  • You can see from the figure above that source voltage is applied in parallel with the diode that helps in decreasing the output voltage from its input, keeping the breakdown voltage constant over a wide range of source voltage.
  • Constant breakdown voltage takes a vital part in maintaining the stable output voltage, making it unable for input voltage to effect the output voltage.
2. Waveform Clipper
  • Zener diode shows a different behavior when it is connected in series.
  • It acts as a waveform clipper when connected in series, allowing the waveform to clip from both ends of the cycle i.e. positive end and negative end of the cycle.
  • High voltage spikes that can occur at the end of output voltage can also be prevented with the use of zener diode, helping in reshaping the output signal.
3. Voltage Shifter
  • Voltage shifting is another feature in which zener diode is good at.
  • When it acts as a voltage shifter, it reduces the amount of output voltage equal to the breakdown voltage.
That's all for today. I hope you have enjoyed the article. However, if still you feel skeptical or have any question, you can approach me in the comment section below. I'd love to help you based on best of my knowledge and expertise. Feel free to keep us updated with your suggestions, as they allow us to give you quality work that resonates with your needs and expectations. Thanks for reading the article. Stay Tuned!
Syed Zain Nasir

I am Syed Zain Nasir, the founder of <a href=https://www.TheEngineeringProjects.com/>The Engineering Projects</a> (TEP). I am a programmer since 2009 before that I just search things, make small projects and now I am sharing my knowledge through this platform.I also work as a freelancer and did many projects related to programming and electrical circuitry. <a href=https://plus.google.com/+SyedZainNasir/>My Google Profile+</a>

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Syed Zain Nasir