// 计算截止频率,以对数标度为基数 POt doublebasePot = pow(SAMPLING_FREQ / 2.0, 1.0 / FREQUENCY_BANDS); coutoffFrequencies[0] = basePot; for(inti = 1 ; i < FREQUENCY_BANDS; i++ ) { coutoffFrequencies[i] = basePot * coutoffFrequencies[i - 1]; } // 绘制虚线以分离频段 for(inti ...
It checks if at maximum 1/8 of the periods are greater than 1.5 or less than 0.75 of the average period. If not, the value ofFrequencyRawis overwritten with the error codeSIGNAL_DISTRIBUTION_PLAUSI_FAILED. computeDirectAndFilteredMatch()waits for n matches within a given frequency range (Fre...
/* 【Arduino】168种传感器模块系列实验(资料代码+仿真编程+图形编程) 实验一百三十六:0.91寸OLED液晶屏显示模块 IIC 12832液晶屏 兼容3.3v-5V 项目二十三:黄色屏声音可视化器 实验接线: max9814接A0 oled模块 Ardunio Uno GND---GND接地线 VCC---5V 接电源 SDA---A4 SCL --- A5 */ #include "arduinoFFT....
* The int.osc. for the PCA9685 chip is a range between about 23-27MHz and * is used for calculating things like writeMicroseconds() * Analog servos run at ~50 Hz updates, It is importaint to use an * oscilloscope in setting the int.osc frequency for the I2C PCA9685 chip. * 1) ...
我们使用Arduino Uno和很常见的RF模块以及RF模块的arduino库文件( RC Switch)作为我们的示例。 所需材料 ● RTL_SDR 亚马逊链接:http://www.amazon.com/NooElec-RTL-SDR-RTL2832U-Software-Packages/dp/B008S7AVTC (或者其他接收设备,USRP等)● SDR-Sharp: 官网:http://sdrsharp.com(功能类似的其他软件还有:...
The practicum device of beat frequency has been developed. The device composes of the AD9833 module as an artificial sound frequency source, Arduino Uno as a control system, and application as the output's display. The module produces an adjustable frequency of sound in real-time. Then, ...
一、首先配置并安装好platformio 可以参考我这篇帖子:如何安装 PlatformIO? 二、下载并安装对应的库文件 1.在PIOHOME的HOME里面创建一个工程配置如下 2.在PIOHOME的libraries里面搜索并安装这两个库到你的工程中 lv_arduino lv_arduino 添加lv_arduino到工程目录下 ...
How Does the Arduino Ultrasonic Range Finder Work?For this range finder, we use an UltraSonic sensor to measure the distance between two points. The principle of operation for this sensor is measuring the distance traveled by sound in a given time. The sensor generates high-frequency sound waves...
#include <SI4735.h> #define RESET_PIN 16 // Arduino Nano / UNO pin A2 SI4735 rx; void setup() { rx.setup(RESET_PIN, FM_FUNCTION); rx.setFM(8400, 10800, currentFrequency, 10); delay(500); rx.setRdsConfig(3, 3, 3, 3, 3); rx.setFifoCount(1); } char *utcTime; char *...
● Arduino Uno 网站:http://arduino.cc/en/Main/Buy ● 433MHz RF Link Set 网站:http://www.seeedstudio.com/depot/433Mhz-RF-link-kit-p-127.html ● 一些杜邦线,面包版 ● RC-Switch 库 网站:https://code.google.com/p/rc-switch/