Raspberry Pi 4 has been released for a while, have you tried it or been waiting for years? For months in fact.Good news is that Elecrow has acquired the dealership for distributing Pi 4 globally and has well made a useful and powerful kit (Raspberry Pi 4 (4GB) included) which is on sale for $89. Want it for free? OK, there is one way for you to get a free Pi 4 (4GB) immediately.

From September 9 to October 9, Elecrow PCB and PCB Assembly services are offered with great benefits to all our customers. Thrilled to say, 10 PCBs for just $1, and get a Raspberry Pi 4 (4GB) for free with the PCB Assembly order over $2,000.

Raspberry Pi 4 has been launched for months, maybe you have had one, otherwise please check the latest Elecrow Raspberry Pi 4 Kit (P4 (4GB) included).

Since the Pi 4 has upgraded significantly in its speed, memory and data connection, now you can make more projects than before, with better performance. Elecrow selects a total projects out of the internet for you.

 PS: We will keep updating this post for months, please bookmark it.

For the Beginners:

1. Build a New Computer
2. Enhance Your Home Network
3. Enjoy Pi-Based Gaming and Streaming
4. Expand

1. What is AXI?

AXI is short for automated X-ray inspection, it's one of the most commonly used approaches for defect inspection in PCB Assembly. Not only does AXI check the solder joints under components, but it also reveals many defects in solder joints that may not be visible by the ordinary optical inspection equipment.

2. How Does AXI Work?

In order to effectively inspect the PCB Assembly’s quality, three conditions are required for AXI:

First, X-ray is a must:

Unlike automated optical inspection (AOI), automated X-ray inspection (AXI) uses 

X-rays as its light source, instead of visible light, and utilize its penetrating a

To Our Dearest Customers Who Place PCBA Orders to Us:

You know that every time when you send an inquiry for PCBA project, our project manager will ask you to send the Gerber file and BOM to us so that we can work on the quotation accordingly. Today what we want to talk about is the MPN, which is a key column in your BOM list.

Firstly, what is MPN? How to get the correct MPN?

The MPN(manufacturer part number) is an uniform component code, which is recognized by all

Recently, with the increasing PCB&PCBA orders and more and more customers visiting ELECROW, we did a big upgrading to our workshop and production line, to give back to all of our old customers and new customers, we are now launching below ANNUAL BIG Promotion for PCB&PCBA orders:

Starting from May 23th 0:00 am to June 23th 24:00 p.m

1.Pay ONLY $0.99, and you will get maximum 10pcs PCBs (1 or 2 layers, up to 10*10cm), how

Why coding is so important to kids?

In recent years, “learning to code” has always been big popularity, then someone will ask: “why is coding so important to kids?”We acknowledge that coding is the DNA of the digital world, it’s not hard for us to find everything around us, including phone Apps, websites, and even many home appliances rely on coding to work. So that’s why programmers are in high demand. Developing a coding literacy will affect kids a lot, it makes kids a better thinker, they will think logically to find a perfect solution when encountering things. Also once kids know how to program, a whole world full

I work as the sales&Marketing manager in Elecrow company. One of its business is to develop STEAM education products. So I learned lots of new knowledge in this area both from my working career and the after-work activities. In this article, I will talk about the topic of why teach kids to code according to my personal experience and independent thinking.

Recently, a lot of smart home applications are going on, people prefer to move from traditional way of controlling stuff into more automatic way.
For example, TVs and Air conditioners till today are being used with a dedicated remote controller. In our tutorial today - we are going to change it!We gonna teach you how to use Arduino Crowtail LED in order to capture the existing code from your TV remote and send it programatically using a push of a button!

The last time we did the first version of Sundancer and received many good feedback, so this time we will make a new ones which is more elegant and cool Sundancer.

This time we will use acrylic materials to build this project. Below is a butterfly-shaped box that can be used to hide the main control board and other things to make it look simpler and more beautiful. Of course, if you have a small charger, you can put it inside, so that the Sundancer

You need to open your circuit design software before you start your project cause you must know how the electrical circuits will work as an electronics engineer. I know that choosing the right one from a multitude of software is a tangled thing. Here we list the most popular 10 ones for your reference.

1.Eagle（Easily Applicable Graphical Layout Editor）

It provides the best of both worlds: the