oracle_monitor

用51单片机模拟dds产生正弦波，方波，三角波，幅度频率可控。(Dds generated using 51 MCU simulation sine, square, triangle wave, amplitude frequency control.)

Windows系统搭建esp8266的本地Mqtt服务器，局域网点亮一盏LED灯(Windows system builds the local Mqtt server of esp8266, and the local area network lights up an LED lamp.)

说明：  113、基于51单片机老人生理智能监控GSM短信 本设计由STC89C52单片机电路+火焰传感器电路+加速度传感器+心率传感器电路+SIM800A_GSM模块电路+电源电路组成。 该系统实时监测老人是否跌倒，是否周围有火以及心率情况。 1、如果火焰传感器检测到火焰，则GSM向特定手机发送：Fire！ 2、如果ADXL345检测到老人跌倒了，则GSM向特定手机发送：Fall！ 3、如果心率传感器检测到老人心率高于120，则GSM向特定手机发送：High Heart！ 4、注意本设计一次上电上述情况每个只能触发一次上报短信，不会连续发送，防止反复发送，请放心使用。 5、短信处理过程有GSM信号灯指示。 6、GSM模块是SIM800A，该模块和SIM900A电路程序完全兼容外观外形一模一样。(GSM SMS for elderly physiological intelligent monitoring based on 51 MCU This design consists of STC89C52 MCU circuit + flame sensor circuit + acceleration sensor + heart rate sensor circuit + sim800a_ GSM module circuit + power supply circuit. The system monitors whether the elderly fall down, whether there is fire around and heart rate in real time. 1. If the flame sensor detects a flame, the GSM sends: fire! 2. If adxl345 detects that an old man has fallen, the GSM sends a specific mobile phone: fall! 3. If the heart rate sensor detects that the heart rate of the elderly is higher than 120, the GSM sends a message to a specific mobile phone: high heart! 4. Pay attention to the design of a power on, each of the above conditions can only trigger a report SMS, will not be sent continuously, to prevent repeated sending, please rest assured to use. 5. SMS processing process is indicated by GSM signal light.)

High Priority Broadcast Receiver extends Result Receiver.

16*16LED点阵显示汉字的工程文件，使用4个74ls595进行行列驱动(16* 16LED dot matrix display Chinese characters in the project file)

串口看门狗模块的程序，通过定时如果规定时间内没有收到喂狗信号可以重开系统电源使其重起(Serial watchdog module procedures, through regular, if not received within the specified time signal can be re-opened喂狗system power so that it re-starting)

说明：  使用stm32f103的adc功能采集电压数据，使用了DMA，12通道(Using the ADC function of STM32F103 to collect voltage data, using DMA, 12 channels)

GSM Basics : Global System for Mobile Communications s a digital mobile telephony system that is widely used in Europe and other parts of the world.

Source code show how can made additional videoeffects on matrix led 8x8

利用STM32主控单元与三轴陀螺仪MPU6050。MPU6050进行倾角测量，对测得的加速度和角速度数据进行AHRS数据融合，最终得到姿态角，姿态角再进行卡尔曼滤波。STM32单片机控制步进电机运动，对检测到的姿态角做最优控制。(Development of a Robot Balanced on a Ball)