Tutorials

There will be a lot of trash in our daily life. How to classify all kinds of trash has become a headache for us! Have you ever thought of building your very own affordable mini smart trash can at home? You can actually do so with our Crowbits-UNO, Crowbits-Color sensor and 9G servo. Watch videos and tutorials to get started.

Today we are going to teach you how to assemble a computer easily with few steps! After you view this article, you'll have a functional and cost-effective computer.

What can we do with this computer？

The computers we build today are not only used to web browsing and email but also can use it to learn basic computer science and practice programming. We can also carry out many electronic experiments with it. What’s more interesting, we can play games and build our own games.

PCB badge design. Christmas PCB design. #badgelife #ElecrowPCB

How to import BMP file into eagle file?

How to export gerber file from Eagle PCB design software.

Open source Eagle design file and PCB manufacturing gerber file.

PCB projects sharing Facebook group There are a lot of Christmas PCB projects shared last year.

PCB fabrication online order page

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 of possibilities will open, they may create their own game or App instead

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!

Considering the wide use of micro:bit and electromagnetic lock, we made a video that combines the two to apply in life. What electromagnetic lock is? Electromagnetic lock is a locking device that consists of an electromagnet and an armature plate. There are two main types of electric locking devices. Locking devices can be either "fail safe" or "fail secure". Electromagnetic locks are fail-safe by design. (Fail-safe means that if the power goes off the door will be unlocked).

Preview one breadboard usage picture first.  And you can learn how the pins connected in one breadboard and how to use it.  The following is some basic information about breadboard. What is a breadboard? A breadboard is a rectangular plastic board with a bunch of arrayed tiny holes in it. You can easily insert electronic components into these holes to make up a connective circuit for prototyping or testing. There are different sizes and different colors of breadboards like these. You can visit this page to purchase breadboards in good price.

Voice typing feature is quite common to mobile phones; it is considered faster and user-friendly to those who find it difficult to type to input the question about which they need information. If typing fast is required or your handicap, this feature works the best for you. In this article, we will input voice via an Android App and the output will be displayed on LCD using Raspberry Pi. This requires a 16x 2 LCD with Raspberry Pi which is equipped with Bluetooth to receive inputs from the mobile phone. Start with Connecting 16x2 LCD with Raspberry Pi: Setting Bluetooth is preceded by interfacing 16x 2 LCD with Raspberry Pi. Bluetooth setup, first we will interface 16x2 LCD as Raspberry Pi accessory. External

1. Avoid the input end getting too close to the output end, especially in the case of high gain. For the following reasons: 1) When it is a positive amplifier, being too close would generate the parasitic capacitance - positive feedback loop – then cause the shock; this shock is independent of the input signal, that is, it could happen without input. The frequency of this shock depends on the circuit structure and parasitic capacitance and other factors, most of the time it’s over 1MHz. However, with the changes of parasitic capacitance, what would be caused is not only the circuit shock, sometimes the situation of work instability and deterioration would happen. 2) When it’s the opposite amplifier, the Miller effect is generated, which would cause the deterioration