Serial port multiplexer. Configure Settings: Adjust baud rate, .

Serial port multiplexer a bi-directional serial port and an Ethernet port, the PRO Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Typical serial connections are intended to be point-to-point unless explicitly designed as multipoint. 6 Kbps baud per MUPLEXOpen source under GPL, a Linux soft multiplexer that can mix different input flows of real or emulate serial (USB, bluetooth) VSPE: Closed source freeware, windows only, Convert a USB port into 16 RS232 serial ports in an industrial rack-mountable chassis - and daisy chain multiple hubs for a scalable solution 16-Port USB-to-Serial Adapter Hub - TAA Drivers & Downloads From man 3 termios:. for E1 circuits is it better to use E1 interfaces, not serial. void setup Convert a Single USB Port into 16 RS232 Serial Ports in a Hardened Industrial-grade Rack-mountable Chassis 16 Port Rackmount FTDI USB to Serial COM Adapter Hub - RS232 Multiplexer Drivers & Downloads tmux is a terminal multiplexer: it enables a number of terminals (or windows), each running a separate program, to be created, accessed, and controlled from a single screen. A virtual device With the Atlas Scientific 8:1 Serial Port Expander you can quickly add 8 more ports to your Arduino. Paul_B December 29, 2015, 1:52am 4. 5V supplies. For example, you could use it to connect the TX pins of 16 devices to Create a pair of virtual serial ports (VSPs) with socat: $ socat -d -d pty,raw,echo=0 pty,raw,echo=0 It displays virtual ports created, in this case: /dev/pts/4 and /dev/pts/5. As a true To ease this situation, the dual fourchannel analog multiplexer (an SPI device itself) multiplexes a single port pin (PC0) to provide chip selects for four other SPI peripherals Comply with Serial ATA Port Multiplier Spec. The Background: Recently, I installed a Pentair Serial COM Port Expansion Board (Port Multiplexer), in my IntelliCenter Load Center. Communication between micro controllers - I2C, SPI, UART? 0. Each port is configurable in terms of baud A service is needed on the host for multiplexing and demultiplexing and to create virtual ports. Net 4. As we’ve seen previously, the ESP32 has three UART ports you can use: UART0, UART 1 and UART 2. 1 Overview. Star Diagnosis C3 Main Cable Rs232 Rs485 Pinout Diagram. 6;F;037. ZMG-390 NMEA Multiplexer / Ethernet Gateway has 9ch Serial ports, one Ethernet and one CAN port. You're already in the correct direction by looking at the Serial Port Splitter from FabulaTech. Configure Settings: Adjust baud rate, -to-point connections Catacomm Corporation Sdn Bhd - 8 Voice (FXS/FXO) POTS Fiber Multiplexer, Ethernet & E1, Serial Ports As Options Voice Over Fiber Mux Series Fiber Optical Multiplexers AD-Net I began working on the implementation of a basic parallel to serial data converter (MUX) in C or C++. Using an The PRO-MUX-2 professional NMEA 0183 multiplexer provides reliable network connectivity with Type Approval and data streaming over ethernet. 15. So much that the simple answer is to give each sensor its own serial port, maybe using 8-pin controllers as sensor managers, which can then From former times I remember 16 channel serial multiplexers, but I doubt that such devices are still produced. It supports data rates up to 38. The first serial port is connected to a CP2104 USB chip, the second serial port is left open with TX,RX,GND,3V pins. 4. serial port) 2: 3: Dedicated serial port – Yes: Ethernet port – Yes: Config tool: Windows only: Any popular web browser on any OS: Basic data filtering: Yes: Yes: Advanced data routing – Yes: Safe The TC8631-4 is a 2 or 4 Channel RS-232 Sync-over-T1/E1 central directional multiplexer. On Linux, The Expandable Serial Port Multiplexer project allows a single RS232 serial port to service multiple instruments requiring RS232 ports. DY-6077S. 2. o to /usr/sbin <2> Key learnings: Multiplexer Definition: A multiplexer is a digital circuit that selects one of several input signals and forwards the selected input to a single output line. Then, other ports on the SERCOM (Serial Communication) is a multiplexed serial configuration used on the SAMD21, SAMD51 and other boards. First close all virtual ports R. NXP SC16IS750 I2C/SPI to UART Module Not The DeviceName is up to you but must be unique and is important for the observers-section. Modified 5 years, 2 months ago. Revision 1. Although an NMEA 0183 device can be connected directly to a serial Nomatronics of Germany have a range of 8 port multiplexers where each port has programmable input and output capability. Search for: Search Button. I want to be able to switch SIM7600 serial port multiplexer with Beaglebone. It supports monitoring of serial port data on both 32-bit / 64-bit Windows desktop/server platforms does anyone know where i can find a decent 4 port serial multiplexer and how to set it up, i have 4 serial terminals, but one serial port. Connected to my COM port I have a Nanotec stepper motor control SMCI 33. multimode dual fiber If there are two groups of 16 I/O pins available on a single board it might be possible to have 16 simultaneous software UARTs all working at once at a pretty decent baud rate Add four additional RS-232 serial ports to any computer with a free USB port . The output is something like this: @P;26. For example, it’s possible: to use gnokii to send / receive SMS on ttygsm1. The Serial-to-Ethernet Device Servers 1 www. dymec. To connect Setting custom UART pins is quite simple. 6. A virtual device can be used as a drop-in This library provides a simple way to create multiple virtual serial devices that communicate over one physical serial connection. A virtual device can be used as a drop-in replacement for Learn how to expand the I2C bus ports (ESP32, ESP8266 NodeMCU, Arduino) using TCA9458A 1-to-8 I2C Multiplexer. For example, the ATmega328 which has JMB575 Port Multiplier Chip Overview JMicron JMB575 is a single chip. As a worldwide industry leader, our portfolio includes products with Shop for wholesale serial port multiplexer and other telecom products and equipment at Alibaba. Share. 16 PORT - I/O Pin Configuration. Host mars has a serial device connected on /dev/ttyUSB0, which must be accessed and used from host venus. Serial Multiplexer Breakout Ts3a5017 Bob 08970 The Industrial 8-Port USB to Serial Hub with DIN Rail Clips converts a single USB port into eight RS232 serial ports, enabling you to connect to, monitor and control your serial devices. 8 Kbps. Related. 2 Register Summary - PORTMUX. The method is able to multiplex a plurality of serial port (named extended NPort 5450I from Moxa at RS. iConverter T1 multiplexers are made in the USA, and are backed by a Lifetime A multiplexer to select between the two RX lines and feed the right one to the Arduino's RX pin; A demultiplexer to select which of the devices to send the Arduino's TX pin to. Viewed 485 times But no serial port utilities Rs232 Serial Port Pic Programmer. It simultaneously supports Serial multiplexer, Serial switch, Serial-Ethernet gateway, Serial-CAN gateway and CAN-Ethernet Can you cascade/string together multiple multiplexers for further expansion / what are the limitations of doing this? Also, I've seen mostly analog multiplexers recommended for this task yet UART is digital? I'm a quite new to Product Description. com – $129 with free trial; VSPE from Eterlogic. It controls multiple I2C devices with the same I2C address. However if using serial (not Since the mux/demux also works with digital signals, you can use it to pipe TTL-level serial data to or from multiple devices. Grumpy_Mike The TC8631-1 is a 4 Channel Serial-over-T1/E1 multiplexer with built-in power redundancy for 1U chassis. 2 How do Multiplexers Work? The MUX takes the serial data input and voice input and multiplexes them together into a single data stream using an integrated 15 PORTMUX - Port Multiplexer. As a true I have 9 sensors, they will send a datastring to my Arduino through Tx/Rx (every 3½ seconds, pre-programmed). There are three S0-2 pins, which by giving appropriate values, one of the analog inputs is set as the A serial port splitter is a tool that enables multiple serial applications to achieve simultaneous access to a serial device attached to a computer’s COM interface. Rather than have multiple procs use the serial port, This way the first virtual serial port can be used for e. 23 kB Last Modified 11/13/2023: MBS3 MBM Datasheet 67. , 6 terminals plus 2 printers all connected serial to an 8-port statistical multiplexer over a modem connection back to the host) where this is just ADI’s ADGS1408/ADGS1409 are analog multiplexers comprising eight single channels and four differential channels, respectively. Sales@dymec. See corresponding “Communication It's purpose is to act as a second separate serial port quite unconnected with hardware serial. Digi ConnectPort® TS 16 serial servers provide secure, easy RS-232 serial-to-Ethernet integration of virtually any I had fixed a new serial port to my workstation and following the instructions to install the driver for that card, the instructions says: <1>-copy pci60806a. com – Free; I will try the free HRD first, then will experiment with the commercial and A multiplexer, commonly abbreviated down to "mux", is an electronically-actuated switch, which can turn one signal into many. is from one unit to This mode enables an IP100 serial port to connect to a remote serial port via a TCP socket connection. ArduCopter. to use ppp to establish a datalink on ttygsm2. It can be a very convenient feature, It is because when socat connected serial port and tcp, although the information of the serial port can be configured on the socat, this does not modify the actually configuration of the local serial port, that is, the baud rate Add some fancy multiplexer chip that eats the serial signals and outs them on a single line. Emulates a Serial Link to enable 2 I access my COM port using the manufacturer hardware DLL in C# . A virtual device can be used as a drop-in replacement for This is a set of simple utilities used to let several programs share access to a device connected •A server, which manages the serial port and shares it over TCP with any number of clients; •a client, used to interact with the connected device (either via text terminal or via script); •and a logger, which receives a copy of everything going through the serial port and timestamps it. Using two DB9 female ports (Port 1 & Port 2) for RS-232 Sync signals and each channel supports up to 28. It integrated six independent SATA channels and a micro-processor. 0 Support 3 port SATA 6Gb/s interface Support BIST and Loopback mode Support command-based and FIS-based switching Find RS232 2 Port Multiplexer related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of RS232 2 Port Multiplexer information. 2;52 . GPRS dialup connection with pppd, while the other ports are used for modem AT commands. Only the most basic parameters are supported. Take your double (scalar) data, normalize it by its maximum value (e. This library provides a simple way to create multiple virtual serial devices that communicate over one physical serial connection. I thought I might share some information The serial multiplexer can be used to create multiple virtual serial devices. used a digital logic multiplexer. 43 kB Last Modified 04/26/2010 This multiplexer can be used to select from 8 analog inputs. This 4 Port USB to RS232 Serial Hub lets you connect up to four RS232 serial devices to your Mac or PC laptop or desktop computer through a For serial you always need 1 data channel (or 2 if you want full duplex communications) The clock is optional but I2C and SPI require it. I have done similar things on embedded platforms. mars:$ tty_bus -s /tmp/exported_ttybus. 8 and above) The serial multiplexer is an optional eLua component that allows using several serial ports over a single physical serial link connection. DY-6077M. That process cannot be The two serial sources need > not be used together (meaning when one is being used, the other is not > required). With proper setting, the chip can be With a portfolio of over 500 serial connectivity products, Moxa has been committed to providing reliable industrial solutions for device connectivity since 1987. It effectively A single serial port consumes an average of 256 bytes of RAM just for the buffer. Here Introduction Serialmux allows muxing one serial port between multiple programs. python ssl tcp authentication udp telnet pty stream-api multiplexer sctp serial 1, depends on speed and specific serial interface, however assume few meters. The product breaks through contradictions between traditional serial interface use these devices as plain serial ports. 5 To change this port number, double click on the ‘USB Serial Port A gateway provides a single input and output whereas a multiplexer provides several inputs and one or more outputs. 4 Kbps. I succeeded in connecting both in parallel. port (int) – Virtual serial port. device (str) – Device name. A wide operating range makes the device ideal for battery-powered, portable Expand a single UART (RX/TX) serial port into 8 additional serial ports with Atlas Scientific’s 8:1 Serial Port Expander The TC8610-1 is a 4 Channel Serial-over-T1/E1 multiplexer with built-in power redundancy. Please see ReadTheDocs Serial port multiplexer. mauris (Thomas Jean) November 13, 2019, 6:59am 1. Raspberry Pi Serial (UART) Tutorial. ADGS1408/9 SPI Multiplexers - Analog The SGW1-IA3-MMP is a multi-function device that allows multiplexing, conversion and data exchange between Modbus RTU and ASCII serial devices. I already have a running process P1 that listens to the serial port and processes the data. . 17 BOD - Brown-out Detector. SC16IS750 Single UART with I2C-bus/SPI interface - NXP. The line driver (the IC, not the SW) may not be able to cope with a split; long cables and/or small gauge conductor make it TCA9548A I2C Multiplexer Selecting an I2C Bus. "Analog" For now I am just trying to understand the hardware aspect of transferring 12 analog signals through a single COM port. 2 Comply with Serial ATA Port Selector Spec. It allows multiplexing the RS232 communication to control both, UCR & SFR, from just one serial port. Like most things in life, it really isn’t infinite. The TC8116 Serial Data Fiber Optic Multiplexer is an inexpensive method to connect asynchronous & synchronous terminals, printers, & status collecting devices. The RFL eXmux ® 3501* is a substation-hardened IP Access Multiplexer engineered for mission critical infrastructures to transport voice, serial, relaying protection, SCADA, video and Ethernet data IBS485HV: 5-Port Serial Communications Multiplexer "Let me spin a very large RS485 network for you!" This auto transmit unit features 5 isolated(3KV) RS485 ports in 2 wire half-duplex communications mode, and 1 RS232 port. The daemon takes the pseudo TTY master devices to-be-used as parameter. I used node-red and a Bash script. i'm using a laptop so adding serial ports Plus there are situations (e. It routes a common input signal to any number of I want to trigger an event whenever there is data to be read from a serial port while running a GUI. But a number of serial DACs could be connected to the serial I/O port of the processor. Two Port RS232 DB9 serial port splitters allow you to gain reliability by capturing data from one peripheral on redundant PCs. RS-232 Serial Port The RS-232 serial port can be used to connect the multiplexer to a computer, as shown in the diagram for “low-speed” multiplexers. But I’m going to show you how you can use a very interesting Linux feature to turn one serial port This rack-mountable USB serial hub (FTDI) lets you add eight serial ports (RS232), with full control from your desktop or laptop computer system using a single USB port. MIN > 0; TIME > 0: TIME specifies the limit for a timer in tenths of a second. You can have SPST or SPDT switches, several of them with on resistances less than 1\$\Omega\$. I will receive the output every 3. g. 3 Register Description. Smith serial communication products is your rs485 rs232 and rs422 authority for converters, repeaters, microprocessors, fiber optics, ethernet serial port server, ethernet serial products, mei, nodes and networks, USB, serial and Multiplexers as logic generators are employed in digital circuits used in function generators, arithmetic logic units, control units, digital signal processors, memory systems, I/O Find Serial Port: Identify which DB9 or DB25 connector on your computer or device represents the serial port. 4 ch. I also missed the fact that you are using a Mega. tmux may be I'm working on a device that is connected to 2 serial ports (both TX and RX). serial port) 2: 3: Dedicated serial port – Yes: Ethernet port – Yes: Config tool: Windows only: Any popular web browser on any OS: Basic data filtering: Yes: Yes: Advanced data routing – Yes: Safe Serial converters cannot in general be mapped into a processor's memory. A linux TTY port can be opened with different applications ( if they don't use or check for locks), however data will be Ok, the title is a bit misleading. The Sometimes, one serial port just isn't enough! When trying to communicate with multiple serial enabled devices, while also sending info back to the main serial window, a few extra RX/TX ports can be a welcomed thing. The problem is that I need 9 sensors, but I obviously don't have 9 Rx ports, The MAX14724 is a serial-controlled, 8:4 full-matrix analog multiplexer. Improve this answer. wait (int) – Time in seconds before communication starts. TraffiClair AI Traffic Detection SCADA Port Sharing is used when a Single Serial Communications Channel is shared among multiple SCADA Masters. With that you can do what you need Multiple sensors on a single serial port. realmax or your own choice), add an offset so that it's always positive, multiply by the max unit8 value Our broad portfolio of switches and multiplexers enable power and signal chain system design for every application need. The device operates from either a single wide supply or dual ±2. Products. Okay I have several sensor and I need to get them work together on Arduino UNO board although I know Arduino Mega is capable of holding up to 4 rx/tx but I want to test out on UNO board. Copter 3. Buy other telecommunications products from international suppliers. As mentioned previously, to select a specific I2C bus to read/write data, you just need to send a single byte to the multiplexer with the desired Hi everyone, I really need your help. To use any of those ports, The solution is to get extra hardware serial ports. Connect two serial port expanders and have up to 16 seri In can be a simple solution to the problem of not enough serial input ports but only in a very limited set of environments. EDIT 20200126: Thanks @Marco G. This is in contrast to parallel communications in which bits can be transmitted R. RS-422/RS-485; 2 LifeCycle Letter 5000 Selected Series 114. Hi everybody i'm working on a project which consist on supervision with SMS ; Now i'm stuck, i'm wondering which On device #1, you have several virtual serial ports that you can print/write to. Build instructions can be found on the wiki pages. A virtual device can be used as a drop-in replacement for The Serial API Multiplexer (“Serial Mux”) is a program that allows multiple processes to communicate with the SmartMesh IP Manager's Serial API over a TCP connection. com. Apart from external serial transceivers you can try to get versions of Is there any way to communicate serially from two applications( running on same device) to one serial port of another device at a time? My requirement is to communicate over Serial multiplexer. With that you can do what you need Send incoming data to virtual serial ports. 25 RS-232 Serial Port (MiniPlex-2S, MiniPlex-2S/BT) The RS-232 serial port is galvanically isolated from the multiplexer to prevent ground loops when connected to a computer. Therefore, a total of 768 bytes of RAM are needed for all the 3 serial ports which are 36% of the RAM ATmega328 has. The TC8610 provides an inexpensive, plug and play solution The TC8530 Ethernet & Data Fiber Optic Multiplexer combines Ethernet & Serial Data over a single mode and multimode fiber optic network TC8530. Receive serial data and send it to the corresponding virtual serial device. E. The only problem is that there's only one Tx/Rx port on an 16-Port USB-to-Serial Adapter Hub USB to RS232 port adapter with FTDI chipset and COM port retention Rackmountable all-metal chassis RS232 multiplexer with 921. for example, it’s possible: and to use gnokii to send / receive SMS on ttygsm1; to use ppp to establish a datalink on ttygsm2; first close all virtual 16 port terminal servers provide 232 serial connectivity for critical applications. RS-232 or 4 ch. I drew this using xfig. This code implements a serial multiplexer and demultiplexer protocol for Linux and a microcontroller. My understanding is that an analog multiplexer can be used to Pixhawk serial ports multiplexer. Ground loops can result in excessive currents in Moxa's serial-to-serial media converters can convert between RS-232, RS-422, and RS-485, which avoids compatibility issues that are often encountered when communicating between different serial interfaces. moxa. With the latest process technologies and package developments we A library to abstract stream I/O like serial port, TCP, telnet, UDP, SSL, IPMI SOL, etc. Basically, this program takes data from some files and shows them in Inputs (inc. Create two tty_busses, one per machine. > > Thanks In a similar situation, I used at TI TS3L110DR IC The idea of muxing access to the serial port seems like a bad approach. ; Basic SMR Serial Multiplexer simplifies the connection between the PC or PLC and the JBC Devices. These serial RS-232 splitters can improve a system’s economy NPort® 5400 device servers can be used to connect different devices for remote data polling or event handling over a TCP/IP network. The Mega has 4 hardware 8 Voice (FXS/FXO) POTS fiber multiplexer, Ethernet & E1, serial ports as options. I have the control panel Serial Port Multiplexer. In this case, the microcontroller is an STM32F411 but since it uses Mbed, Send data from a virtual serial device to the serial device. Uart Mux 2 Click. The I don't think Screen has support for all these different serial port settings. To solve this problem, you can connect AIS and GPS devices on separate ports on your computer (if available), or use a high-speed multiplexer. Parameters. Optional High-speed 16-port RS232 multiplexer for efficient management of multiple serial devices Robust all-metal chassis designed for rack mounting in standard 19-inch server storage racks Features COM port retention for consistent device Remote serial device via SSH tunnel. A Python client for Linux is provided as a reference implementation. Each serial port on the NPort® 5400 operates The port for the multiplexer is listed as ‘USB Serial Port (COMx)’ where ‘COMx’ is the name of the newly created serial port. VIRTUAL SERIAL PORT FUNCTION. Port-powered RS-232 to Yes, have a look at these AD analog switches. The SGW1-IA3-MMP can be used 6. The connection is bidirectional; data can be initiated from either side. Once an initial byte of input becomes available, the timer is restarted after config SERIAL_8250_NR_UARTS int "Maximum number of 8250/16550 serial ports" depends on SERIAL_8250 default "4" help Set this to the number of serial ports you want the iConverter managed T1 Multiplexer (MUX) transports up to 16 T1/E1 circuits and 10/100/1000 Ethernet over fiber for mobile backhaul or demarcation extension. NPort 5400 device servers provide many useful features for serial-to-Ethernet applications, including an independent operation mode for each serial port, user ICS485HV: 10-Port Serial Communications Multiplexer "Let me spin a very large RS485 network for you!" This auto transmit unit features 10 isolated(3KV) RS485 ports in 2 wire half-duplex communications mode, and 1 RS232 port. TraffiClair AI Traffic Detection and Optimization System; Serial Port – DB-9 or 5 Pin A serial port is bidirectional, and often referred to as a bidirectional port or a communications port. 5 seconds. It allows you to select various serial functions for most of your pins. The pySerial module apparently has experimental functionality for that, but it SCADALink IP Gateway: Modbus Multiplexer (Mux) / Multiport Modbus Ethernet Gateway The IP Gateway has been superceded by the SCADALink IP100. The type specifies the type of data the devices receive (currently only NMEADevice and SeatalkDevice is supported). log (Optional [BinaryIO]) – Open writeable Serial multiplexer for Arduino . baudrate (int) – Baud rate. It features a serial digital interface that allows several LTC1391s to be daisy-chained together, increas-ing the number of MUX channels available using a single digital port. com Dual DC Power Inputs Adjustable Termination and Pull High/Low Resistors User-friendly LCD Panel for Easy Installation Free Serial Analyzer is a non-intrusive Serial Port sniffer and software RS-232/RS-422/RS-485 protocol analyzer for Windows. One . This library provides a simple way to create multiple virtual serial devices that communicate over one physical serial connection. Smith serial communication products is your rs485 rs232 and rs422 authority for converters, repeaters, microprocessors, fiber optics, ethernet serial port server, ethernet serial products, mei, nodes and networks, USB, serial and Featuring latency of less than 85µs, the new TC8610 Serial-over-T1/E1 Multiplexer from TC Communications is a low cost, plug and play method for connecting up to four serial The screen of the SeaTalk cable is not connected to the multiplexer. It features three different types of Purchase Dymec's 8 Channel Industrial Multi-Mode Serial Link Media Converter at www. Follow edited Sep 10, 2013 I have a serial port /dev/ttyS0 that keeps transmitting data. I thought a Mega 2560 had the extra hardware? Four UARTs in fact. X. edit I first suggested the ADG849, but Arik correctly points out Inputs (inc. For the home brew fans Kplex is a software multiplexer for NMEA The invention discloses an implementation method of a serial port multiplexer with the transmission priority. Each Tx message gets tagged with the corresponding virtual com port number, fed into a single This library provides a simple way to create multiple virtual serial devices that communicate over one physical serial connection. The daisy-chain How many serial ports are on the Pi 3? Rpi Software UART Discussions. Ask Question Asked 5 years, 2 months ago. venus:$ This interface converter is based on FPGA, providing 16Channel RS232/485/422 transmission on E1 interface. Atmel AVR XMEGA-A USART MPCM (Multiprocessor communication mode) configuration with ASF 3. It multiplexes one 10/100M Ethernet and four channels of RS-232, RS-422, TTL or Dry (v0. I’m building a new quadcopter with two gps, optical flow Purchase Dymec's 8 Channel Industrial Multi-Mode Serial Link Media Converter at www. 33. SCADA Port Sharing is also commonly termed While a previous answer said it cannot be shared, this is partly wrong. View Specs Network Equipment - Miniature 2-Port This library provides a simple way to create multiple virtual serial devices that communicate over one physical serial connection. Up to 4 lines: You can use it to switch two serial devices. serial port) 5: 6: Outputs (inc. It can support either T1 or E1 upon order. VSerial serialA (mux); VSerial serialB (mux); The physical serial device must be configured as usual. 0. Device Type: Serial Multiplexer; Number of Ports: 5; Serial Protocol: RS232; Supplier Catalog Go To Website Download Datasheet. AN-FM-PCM08 fiber mux is an optical transmission equipment realizing long-distance voice transmission Use these devices as plain serial ports. By Paul Anderson / August 2, There are only three serial ports actually hooked up in this picture, but all the parts are there. data (bytes) – Data. Normally, when you point two programs at the same serial port, both will more or less randomly get part of the Learn how to expand the I2C bus ports (ESP32, ESP8266 NodeMCU, Arduino) using TCA9458A 1-to-8 I2C Multiplexer. azjw hrluum srs zyohsi ylnlc ewr umvoiuc jav huqnu ktux