Some people used the PC sound card input (microphone hole) to simulate the oscilloscope, but few were implemented using mobile phones. Using MMAPI of j2m's to simulate the oscilloscope, the specific effect is slightly inferior to that of a smart machine, because the smart machine can read the microphone input stream in real time, while j2m's still need a short buffer to constitute a blocking, however, it is
Digital oscilloscope GUI base on SDL.
1. soure code:
/* Bring up a window and play with it */
2. Run on x86:
3. How to Use SDL APIs:
1). sdl_init (sdl_init_video ).
Initialize the video devices such as framebuffer, direactfb, X11 or OpenGL etc.
2). Set the video device.
Sdl_surface * screen, * window;
Screen = sdl_setvideomode (W, H, 32, sdl_swsurface );
3). Draw some graphic data on the backbuffer (swsurface ).
Uint32_t color;Sdl_rect rect;
My Android advanced tour ------> Android implements music oscilloscope, balancer, bass and audio field functions, and android advancedThis example is from the crazy Android handout. To implement specific functions, you need to understand the following APIs:
MediaPlayer Media Player
Visualizer Spectrum
Equalizer
BassBoost bass Controller
PresetReverb preset sound field controller
Painting
The following figure shows the effect.
Portrait Waveform
I'm with Arduino, and why write this series of articlesArduino has been on fire for years, and it's not a new technology. If someone is not clear about what Arduino is, I'm sorry, please search by yourself, open any Wikipedia introduction or a fan of the series of articles, people introduced more than I know more comprehensive. I'm afraid I don't have to repeat it here.The first contact with
-- Skip the cover here --
Arduino Literature Review
Abstract: Arduino is an open source code-based software and hardware platform (Arduino board, Arduino IDE) that supports Java and C language development environments. With its simple development method, more and more professional hardware enthusiasts choose
Abstract: This article focuses on what Arduino, the Arduino development environment, and the Arduino-related resources website, etc. What is Arduino?
Arduino is a convenient, flexible, and easy-to-start open source electronic prototyping platform that includes hardware (vari
The Arduino pro mini is a micro-control panel based on atmega328 and supports 5 V/3.3v voltages. However, the default voltage is 5 V. How can we make this board support 3.3v voltage.
Preparations
1. If you have never used Arduino, You need to download the IDE first. The installation method is not described here.
2. Prepare two board boards, one of which is our Arduino
New microcontroller types from all over the world emerge one after another. Most of these development boards use Arduino-improved versions, such as y ún, Which is improved by Arduino, it mainly improves or upgrades other wireless functions for the mesh network.
However, some development boards have their own unique designs and basic function upgrades. Here we will take a look at these new partners that hav
Setup and Simulation of Arduino UNO Simulation Development Environment
1. Introduction to the Proteus simulation platform
Proteus software is an EDA tool software published by Labcenter electronics. (Guangzhou fengbiao electronics Technology Co., Ltd. is the general agent of this software in China ). It not only has simulation functions of other EDA tool software, but also can simulate single-chip microcomputer and peripheral devices. It is currently
Open-source circuit diagram design and program development interfaces can be downloaded for free and can be modified as needed.
Arduino is not only the world's most popular open source hardware, but also an excellent hardware development platform, but also a trend in hardware development. The simple development method of Arduino allows developers to focus more on creativity and implementation, and quickly c
Setup and Simulation of Arduino UNO Simulation Development Environment1. Proteus simulation platform overview Proteus software is an EDA tool software published by Labcenter electronics Co., Ltd. (the general agent of this software in China is Guangzhou fengbiao Electronic Technology Co., Ltd ). It not only has simulation functions of other EDA tool software, but also can simulate single-chip microcomputer and peripheral devices. It is currently the b
This morning I attended a Pre-competition presentation on arduino. The organizer sent a set of arduinoUNO kits and a book on arduino development to each group. I flipped through the book and said that arduino is an open-source project (all open-source projects in this year), using an Arduino development language simila
The IDE that comes with Arduino is too bad to use, the following is a powerful, lightweight, free, open source, rich plugins of the notepad++ editor to build the Arduino development environment. The configuration process may be a bit cumbersome for new students, but I try to write it in detail, one step at a to be sure to configure.Preparation Tools1, notepad++ Baidu can download2,
need to be connected to a 5V power supply with a pull-up resistor, which can be 4.7k or 10k.Functional commissioningThe first commissioning took a lot of time, and finally the oscilloscope was taken care of. Some questions to keep in mind:1. Address problem. Although the address in the manual is 0xb8 (0b1011), the device is actually a 7-bit address that should be expressed as 0x5c (0b1011100), The address in the code should also be written as 0x5c, o
Lilypad Arduino wearable technology and electronic Fabric Controller Board Introduction 1th Chapter Lilypad Arduino OverviewAs the first chapter of this book, we will introduce the basic knowledge of Lilypad Arduino to the reader. For example, what Lilypad Arduino is and what it can do. In addition, some of the skills
PreparationI have not bought the source plate. I have purchased the compatible plate from an authorized supplier. For authorized suppliers in mainland China, visitHttp://arduino.cc/en/Main/Buy page, search for China. I purchased an Arduino Ethernet compatible Board. For the source board, see here:Http://arduino.cc/en/Main/ArduinoBoardEthernet compatible board has some changes. In order to connect the computer with the source board and the compatible b
Arduino is an open source hardware, since 2005, has been slowly upgrading, now known as the Arduino circuit board has been many, and every day is increasing. Currently the most common are Arduino uno and Arduino Mega 2560. The Arduino circuit board is traditionally based on
As you know, the Internet of Things (IoT) is now in the ascendant, with a variety of smart devices, watches, things, even sports shoes and other wearable devices, as well as smart home products, constantly impacting our minds and eyeballs. Autodesk has also recently announced its foray into the IoT industry and has just acquired an internet of things company Seecontrol. I do not understand the hardware of the people are interested to play a bit, where to start? Let's start with the simplest
This article applies only if the bootloader is damaged and buys a domestic "no-drive usbasp download Line" that causes the Arduino IDE to fail to recognize and not burn the write. is a slightly non-mainstream mode of operation.Because the Arduino IDE does not support this free-drive usbasp line, it will prompt for errors.The whole thing is like this:1. SymptomsWith the
This article applies only if the bootloader is damaged and the purchase of a home-made usbasp download line causes the IDE to be unable to recognize and not burn the write. is a slightly non-mainstream mode of operation.Because the Arduino IDE does not support this free-drive usbasp line, it will prompt for errors.The whole thing is like this:1. SymptomsWith the Arduino control servo inadvertently play off,
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.