齐护RS485转TTL模块 3.3V与5.0V电源、信号完美兼容的RS485自动流向控制模块无需“收-发”控制,使用本模块跟您操作串口一样简单 (1)、3. 3V与5.0V信号兼容 (2)、采用原装进口芯片,工业级设计,抗干扰能力强同时采用更为有效的485防雷设计,可在工业现场及野外恶劣的环境下使用,工作温度为-40°C至+85°C,传输...
实验七十六:TTL转RS-485模块 MAX485 RS485模块 将Arduino上的数字引脚10、11设置为软串口RX和TX与MAX485模块上的RO和DI连接 MAX485模块上的RE和DE连接在一起用一个引脚2控制MAX485收发状态切换*/#include<SoftwareSerial.h>SoftwareSerial Master(10,11);charval;intDE_RE=2;voidsetup() { Serial.begin(38400);...
RS485可以采用二线和四线两种方式,二线制可以实现真正的多点双向通信.其主要特点如下: (1)RS485的接口信号电平比RS231-C低,不易损坏接口电路的芯片,且该电平与TTL电平兼容,方便于TTL电路相连接。 (2)RS485的数据最高传输速率为10Mbps.其平衡双绞线的长度与传输速率呈反比,在100Kbps速率下,才可能使用规定的最长...
1,打开arduino软件,点击菜单栏文件,首选项,附加开发板管理器网址 http://arduino.esp8266.com/stable/package_esp8266com_index.json 2,选择工具, 开发板, 开发板管理器 3,填写ESP8266, 软件一会会有搜索结果,然后点击安装 4,选择开发板 5,打开一个示例代码,测试控制板 ...
为了在Arduino中使用RS-485，需要一个基于Maxim MAX485 IC的称为5V MAX485 TTL到RS485的模块，因为它...
TTL to RS485 Power Supply Converter Board 3.3V 5V Hardware Auto Control Module For Arduino AVR Wide Voltage Singal Indicator 5.0 1 Review Product sellpoints Hot-Swappable and Multi-Machine Communication:Enables hot-swapping and supports multi-machine communication, enhancing network flexibility. Long-Di...
pinMode(2,OUTPUT);// TTL -> RS485 chip driver pin } void loop(){ static ulong timepoint=0; if(millis()-timepoint> 500){ read_command(); timepoint=millis(); } if (Serial.available() > 0) data_return(); } /***Send command to Analogue_Test and SHT1X Module***/ void read...
I am a beginner. I am trying to communicate (read values) with a device and the modbus address is ranging from 40200 to 40380. I am using max 485 ic to convert rtu to ttl. But on the serial monitor it is showing some garbage value. Is something missing in the code. I have seen...
Hardware Automatic Control:Effortless setup with hardware automatic control, ensuring seamless integration with Arduino and AVR boards. 3.3V/5.0V Compatibility:Versatile 3.3V/5.0V compatibility, suitable for various Arduino projects and AVR boards. TTL to RS485 Conversion:Efficient TTL to RS485 conversio...
XY-017 3.3 V 5 V RS485 TO TTL RS485 SP3485 RS-485 Breakout สำหรับ Arduino RPI แขน ESP8266 ลักษณะ: นี่คือ Breakout การ์ดสำหรับ SP3485 RS-485 transceiver IC ที่แปลง UART Serial St...