Arduino nano software serial port. Create an instance of a SoftwareSerial object.

Arduino nano software serial port I need to be able to invert the logic of a byte sent by a LS2208 bar code scanner. I have tested with the osciloscope that in the TX pin of the ATSAMD11 Hi, There are a number of thread here on this and related topics - I have read them and followed the various suggestions etc. I have tried making a simple sketch just to get I'm using a nano with 2 serial devices, a Bluetooth radio and rfid reader, the RFID reader is connected to the first software serial and works without problems. h> void setup() { Serial. In the "Get Started" Example they do basically the same: Yes I But the Arduino Nano Every has 4 serial ports and Serial1 is defined as UART1 on pins D0/D1. annepaula Hi, I am experimenting with the Arduiono Uno and Arduino Nano. The Nano ESP32 typically exposes two of them: Reading/Writing a HEX file over the serial port. Hopefully, after saving the library files your sketch will compile as normal and your board will use the hardware serial port instead of the software one. Now, I am back to the same problem I described above. Great right? Just one little problem for me at least. I'm using Windows 10 and a serial terminal software. Arduino Nano uses either an ATmega168 or ATmega368 microcontroller, and these only have a single UART. I am planning to use 1 ESP8266 module and 1 Hm-10 BLE module. Programming. So maybe after getting a valid GPS read, disconnect it, then watch the compass until the next scheduled GPS. Using software serial on a nano is a poor choice given the resources you have. So, I bought a new Arduino Nano from this website. I receive "hello" once a second. In the past I used a SoftwareSerial port assigned (10, 11, 1); it was that little "1" that was inverting the logic bits. h> and VMA430 is using #include "Arduino. The main problem I am facing now is the Serial Flow Control, because arduino must receive USB bytes (HPGL), process the bytes and move the motors according to the HPGL instruction (sometimes motors can take 10 seconds Hello, I'm using : arduino nano pcf8574 + 2 tiny 128x64 display on the I2C bus sim800L gsm Let's says it' a kind of "enhanced" phone. Create an instance of a SoftwareSerial object. I always get that (! Serial. I have an Nano Every hooked up to a MPU 9250 compass and also a max3232 ttl to rs232 converter so I can output a nmea sentence. I'm using SparkFun's OpenLog, a microSD card data-logger to which you communicate through serial. I need to use IOT to see GPS I am planning on moving from the old 5V Arduino Nano to the new Arduino Nano 33 IoT. I may Or as nick said the Mega has four serial ports. Given this second hardware serial port, its not clear that software serial is supported on that platform. 6: 3870: May 5, 2021 Arduino Uno / Arduino Nano Serial I'm having trouble since moving from an Uno to the Nano 33 IoT unit. Under Tools> Port is greyed out again. It is a copy. Connect to Nano USB serial port (this works). The port does not seem to work. h" #ifdef __AVR__ #include <SoftwareSerial. Click the serial monitor button in the toolbar and select the same baud rate used in the call The Nano ESP32 is a powerful microcontroller board that combines the compact form factor of the Arduino Nano with the advanced capabilities of the ESP32 chip. Project Guidance. The same code works OK on an UNO so I'm a little confused. You can continue to process code when sending and/or receiving where the software serial requires a lot of cpu time. I figured I would need SoftwareSerial so that I could keep messages sent/received from the drone separate from the hardware serial messages I planned to use to monitor and control the drone. I know that it's not seven but can be useful to know. 15 on MacOS 11. So I begin testing with a sinewave example I found on internet and I No. println("hello"); delay(1000); } But same code on the Nano 33 BLE does not output any text on the terminal. 3: I don't know exactly this is the correct place to post this question , but my problem involves both external interrupt mechanism as well as softwareserial. Suppose , I have initialised two random digital pins , say(8 an The serial port is noted on several lines of my code, and is used for debugging. This answer lists the 4 basic choices:. Paul_KD7HB June 5, 2021, Interfacing w/ Software on the Computer. The problem is that this is quite hard to debug, because, if I have understood I am using the softserial port with 9600, 8E1 and at the same time I am transmitting all data on the hardware serial port for monitoring on the serial port monitor included in the arduino IDE. To provide a I've got a project that I'm working on and need to control a relay via serial commands from an audio DSP. Looking for an limited amount of You can read more about configuring the Nano ESP32’s additional serial ports in this article. A USB stack is a more complex piece of software. – Hello everyone, We are excited to introduce our new serial port software designed to interface seamlessly with your Arduino via UART. Arduino Nano will read data until it encounters the newline character. I have been working on the adafruit sound fx, I just wanted ask about the SoftwareSerial. 27: May 5, 2021 Arduino reset upon serial Java connection. 16: 1775: October 22, 2021 Is there a smaller version of the arduino Mega? 3rd Party Boards. I can receive all data sent by the remote device to the softserial port and they are monitored on the IDE''s serial port monitor. Nano 33 BLE. Gadgeroonie October 11, 2013, 10:59am 7. To test UART serial communication on an ESP32 one can use the code below: // ESP32 serial UART library #include <HardwareSerial. h library but it doesnt offer much information as you cannot set it to particular pins which is frustrating. 3: 1040: May 6, 2021 Setting up 2 or multiple UART connection in an Arduino nano software serial ports. 1 Like. can i use 2 or more Software serial port on arduino uno. So if I omit the #ifdef the code compiles & uploads just fine (as though Serial1 is defined) I decided to set up a The arduino uses FDTI chip to create serial port connection between the computer and the chip so you can program the Altmel chip inside the arduino board. If your project requires simultaneous data flows, see Paul Stoffregen's AltSoftSerial library. Fail sequence: Power on Nano (plug in USB cable). arduino. I am doing this by having a user input a number (In cm) on a different program that will then send the data to the serial port on the UNO. I'm trying to send and receive data from nextion 2. Arduino Forum Software serial in Arduino Nano 33 Iot. I'm unsure how to specify a Modbus serial channel. I know the GPS broadcasts at secondly intervals. I've only used the constructs available in the IDE so far. The reason why you're here is because you also have trouble Arduino Nano & UNO hanya menggunakan prosesor ATmega328 yang hanya memiliki 1 port serial asinkron. If you have another Arduino you can use that as On which pins of the Arduino Nano can I use the software serial library? HardwareSerial, always the best. The Arduino’s default serial port should only be used for the debugging purposes. Looks like the Nano did not see the command. Seems odd. Viewed 2k times I am using the Nano33BLE to drive voice synthesiser via the onboard serial port. I have written a functioning code for the old 5V Arduino Nano using Software Serial (SoftwareSerial. I tried to load the file but won't compile on the Nano33BLE. Software UART on Mega: For the remaining three devices, I am using the SoftwareSerial library to create additional UART ports on the Mega. No. h> static const uint8_t TX_PIN = 21; static const uint8_t RX_PIN = 20; //Define two Serial devices mapped to the two internal UARTs HardwareSerial MySerial0(0); HardwareSerial MySerial1(1); void setup() { // For the USB, just Hello, I want to connect to the Serial while an USB cable is connected. I'm using SoftwareSerial. Hello everybody, I am new to Arduino. SoftwareSerial for communication with the GSM module with pin D7 and D6 I2C bus on pin A4 A5 SIM800L is used as long distance remote control As long as I don't initialize the GSM board Learn how to send/receive data via RS232 using Arduino Nano, how to program Arduino Nano step by step. Multiple SoftwareSerial objects may be created, however only one can be active at a given moment. Official Hardware. 7: Hello, I want to give commands to a stepper motor to tell it to turn a certain amount of times. hello, In my sketch i use a software serial Tx on pin 9 of an arduino nano toward my computer and at the same time the built in Rx hardware serial at 115200 bauds from another device (GPS). I have run out of pins in the project I'm using, and have exactly one digital I/O pin left to use for the OpenLog. Nano cannot take into consideration more than 1 SoftwareSerial Component. See more I'm having trouble finding definitive documentation that says pins 2 (Rx) and 3 (Tx), may, or may not, be used for SoftwareSerial at 115200 baud. 9: 1856: November 29, 2023 Serial communication nano33Iot and SERCOM_Handler() Nano 33 IoT. Is there something like this for I have an Arduino Nano and want to use it as a "device" controlled by a PC via the USB port. Reseting in Software. Without it I would get nothing or trash. The reference page specifically mentions 115200 (not quite enough bandwidth to accomodate the amount of data I need sent), but also notes that "other rates are possible. Run the bootloader. I have a fully working project with a BLE module on Hardware serial, but want With the help of the SoftwareSerial library, it is possible to create additional software serial ports on your Arduino board. Whether you’re utilizing Arduino Uno or Arduino Nano, it’s essential to refrain from using the default serial port for communication with additional devices, reserving it solely for debugging Arduino Nano Every. Therefore I have to use the UART interface of the ATMEL. The ESP32 chip has multiple hardware serial ports (UARTs). The problem is it looks like there are no libraries Hey I have a set up with: Arduino UNO Whadda WPI430 GPS MODULE U-BLOX NEO-7M It works perfect. Hi, I have a problem with arduino nano. My device can only take commands over the uart serial port. h) to communicate with a I am using a arduino nano to control a adafruit ultimate gps and a xbee wireless controller. Jika perlu lebih dari 1 port serial, maka kita perlu menggunakan software yang berfungsi sebagai port serial. answered by slash-dev on 02:47PM - 01 Feb 17 UTC. Hi, I am having trouble adding 2-3 software serial ports to my Arduino Uno software. begin(9600); } void loop() { Serial. The only connection needed is Arduino TX to OpenLog RX, because the OpenLog handles the rest. But since arduino and device can not be connected by wires, so I am trying to use bluetooth for communication. The native usb port instead responds to the SerialUSB class. Could anybody advise me please on, "ModbusRTUClient. :V# to get my program version (nothing comes back). Send first command I. I want the LED patterns to change on receiving a command from another Arduino Nano over software serial, I don't have the option to use he hardware serial. Ideally, i'd like to have the SD card on pins D10-13, so I can still use I realized that each time I establish link on the USB serial port by opening serial port file and activating the transmission lines, the arduino resets itself. The idea is to communicate Q: Can anyone tell me what is wrong with this simple code on a Nano Every? I am receiving two equal bytes on the HW serial (USB) to trigger one byte to be sent/received on the SWserial port. On some Arduinos, there are extra HardwareSerial ports, called I am looking for a way to have a serial device on the hardware port of the arduino NANO and it must echo the data to all 3 extra ports. The Nano Every is Arduino’s 5V compatible board in the smallest available form factor: 45x18mm! The Arduino Nano is the preferred board for many projects requiring a small and easy to use microcontroller board. 8. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with Arduino Nano. However, Nano only has one hardware serial port. I would like to use Nano 33 IOT in the project. The Nano 33 BLE has native USB. I have read that in order to write data to LEDs, the library disables all the interrupts. The SWserial port is looped (wire D2-D3). General Guidance. But due to hardware limitation, Arduino UNO can only listen to You can connect any of the two devices with the Arduino’s default serial port, but, what about the other serial device? At this point you will need the SoftwareSerial library which can be used to create multiple serial ports. but not receiving anything so, I decided to verify using the example and get the same results. h> #endif SoftwareSerial This is working fine on UNO. but I also received another unexpected value. I want to connect webserver via ESP. The Arduino Leonardo uses a software serial port via the USB bus. esp8266, arduino. I could understand an Asynchrounous Communication having one master and 8 slaves , with the master enabling communication from one port, receiving the data If using multiple software serial ports, only one can receive data at a time. But I want to understand the underlying procedure completely. It's already in use for uploading your code and serial monitor. I don't know the layout of the code under the IDE. Hey all, Has anyone got an SD card working on the Nano? I'm trying to use the SD. Our software, called SerialTool, comes equipped with a wide range of useful I need to squeeze about 150000 bps through a serial to bluetooth bridge, and was wondering what the maximum operating speed of the serial port on the Arduino is. I know that the only arduino boards that have more than 1 serial port are the mega and the due (Serial, Serial1, Serial2, etc). On is used by USB while working on a script and the two others are expected to be free for device connectivity. I installed the latest Arduino IDE and during . Ethernet Communication: I just aquired a Mega 2560 board with multi serial ports. Can you suggest how to rework the Adafruit Hi everyone. On older boards (Uno, Nano, Mini, and You can use the Arduino environment’s built-in serial monitor to communicate with an Arduino board. It has more or less the same functionality of the Arduino Uno R3, but in a smaller package of 45mm x 18mm (1. g. The Tx on pin 9 correctly works at 9600 bauds but apparantly (i could check that) these write instructions take too much time so that my read instructions on the hardware serial I'm running Arduino 1. They do have both I2C and SPI, which you can use for communicating with another Arduino, and for some applications you can use SoftwareSerial , which allows you to do async serial on any I've bought a female Micro-USB connector, and I was wondering if there's an easy way to plug the +D and -D into any arduino board (Mega, Uno, Nano, whatever) and use the Wire, Serial or SPI (or any) libraries to send messages through the port (Hence make it a virtual serial port), like when you plug the builtin USB port to program it. HardwareSerial, always the best. i want to block that unidentified However, the serial port stops receiving the distance readings after a very random amount of time. The hardware serial port is free to use. cjdelphi: can you run this libary on any arduino to get extra ports ? system October 11, 2013, 12:13pm 8. I've written the code for a Nano and, using the IDE serial monitor, can send the commands and the relay I am trying to get serial data thru TX/RX on nano 33 iot. I'm not sure what's causing this issue what I can do to fix it. However I recently ran into a problem using both at the same time (before I was using each separately until now) and read that I cannot listen to 2 Beside the Arduino Mega, there is another option. Do I need to download the same driver again? Here are the numbers on the chips on the official Arduino board. My end goal is to send data over bluetooth but for other arduino it must consider it is a uart data. I have never done this before so I wanted to ask a few questions in regards to testing my code: If I wanted to send data to the serial port, is I am having trouble running an alternative serial line from a Mega to an Uno using either Serial3 or SoftwareSerial without the Mega's standard serial plugged into a computer's USB port. The pinout cheat shows there is two pins D0/D1 which are expected to be RX0/TX0 thus used I am planning to use an Arduino (Nano ideally, or Other) to send and receive information from several software serial ports to other arduinos, over their available pins, ideally 8 ports. Welcome Hi all, I am working on a vibration measurement project for my graduation project on the university, it will run connecting Arduino over USB to MATLAB/LABVIEW so I need higher baud rates over serial port which I can reach for now. Sometimes the serial port stops receiving new data after 5 seconds, sometimes 30s, sometimes 60 and even 180s. moving motors) 3 - After processing the bytes, Arduino would send a XON to the PC 4 - PC would send After sending Xoff Arduino NANO receives one byte or I need to connect two arduino boards (through serial) to another arduino board (Nano, Micro or ProMini). Thanks. 16: 8754: May hello. You can use a software serial library to create a serial port on (I believe) any pins you like on your board but software serial does come with its limitations compared It also offers multiple Software Serial ports; I am using one in a project now where I plan to use 6 Software Serial. SoftwareSerial does not support any I am controlling WS2812 LEDs with Arduino nano using FastLED library. Nothing has altered my situation: I have just acquired a laptop to use for programming the Arduino Nano. For serial communication, you have several options: 1. johntoli June 20, 2024, 5:32am 3. I believe it can do multiple Software Serial ports as well; I don't know how many pins support PCINT for that. available() (emphasis mine): Get the number of bytes (characters) available for reading from the serial port. I'm not clear on which pins from the chip these Tx and Rx pins connect to, but if you are using the Arduino core to work with the chip, then Serial1 will be the most simple choice. Unplugging USB may cause some unpredictable issues. The In this tutorial we will control the built-in LED on four Arduino Nano Every boards, from a main Arduino Nano Every. It is possible to have Dear friends, I am trying to develop a USB Plotter based on "Motori the Ploter" (Motöri the Plotter), running on board Uno or Mega1280. Modified 8 years, 4 months ago. It is using #include <VMA430_GPS. Just like a regular Arduino (Uno or Duemilanove). 4 (Big Sur) and testing on both Intel and M1 machines. Simply use the pre-defined Serial variable. 8-inch display. UKHeliBob September 4, 2023, 10:41am 2. 71in) with the DC power jack and USB Universal Serial Bus Type-B female connector replaced by a single Mini-B USB Universal Serial Bus Arduino boards have built in support for serial communication on pins 0 and 1, but what if you need more serial ports? The SoftwareSerial Library has been developed to allow serial communication to take place on the other digital pins of your boards, using software to replicate the functionality of the hardwired RX and TX lines. The Nano only has Serial. . I am working on a project with a Nano Connect where I need to interface to a GPS unit serial is only interface available and to a radio transceiver which also requires a serial interface. Searching this site but also googling globally, i found not consistent info like: "SoftwareSerial can have multiple instances, on any 2 pins" vs "rx pin can be only 2 or 3 because these are the only interrupt capable pins". Is it possible to write the program with the Arduino IDE? Can the code sent to the Nano using the IDE (and maybe an additional ISP programmer)? With this library, it becomes possible to establish multiple software serial ports, each capable of operating at speeds of up to 115200bps. 7: 3247: May 6, 2021 Hi, looking for some help please. 9: 924: January 13, 2022 Sketch Uploads Successfully but Nothing Happens, Arduino is talking to another s. The laptop is a Toshiba Satellite L500-1DT running 64-bit Windows 7 Home Premium Edition. void setup(){ A Nano Every has four hardware serial ports that you can use; see Arduino Nano Every Serial Ports – Kevin's Blog. You can't use it for 2 things at the same time. #include <ArduinoBLE. Only one instance is allowed, and it is must be used on one of the Input Capture pins I am trying to use multiple serial ports with this arduino models. Serial is just a virtual COM port and is handled by a USB stack running as part of your sketch. I would like to communicate with an arduino nano module 433 mhz but I can not make the port of communication open. If you’re using a board with just one hardware serial port (such as an Uno or a Nano) then you’ll probably want to use the built-in FTDI adapter (which is connected internally to the USB port on the Uno / Namo) for debugging, then connect your peripheral via a I did not realize the Nano board I have is not an official Arduino. docs. Is it too much for a Nano to have overall 3 Serial ports (including Serial itself)? sketch It seems that the Raspberry PI has taken control of the USB/Serial port and does not let Arduino to send anything. Code doesn't work for new Arduino Nano 33 BLE board. mega 2560 not activating. " Please advise. So it looks like you'll have to add code to toggle between sampling from each software serial. I use: Serial to output debug information. Arduino boards have built in support for serial communication on pins 0 and 1, but what if you need The SoftwareSerial Library has been developed to allow serial communication to take place on the other digital pins of your boards, using software to replicate the functionality When you need multiple serial devices to be connected, it is possible to create multiple software serial ports. I'm having trouble figuring out which pins are used. 7: 1791: July 28, 2022 Serial comms working on Serial Monitor but nowhere else. Simply use the pre-defined Serial variable. Hey @sterretje - that's a good idea - I'm guessing the flow would be something like: Master initialize its MAX485's for all XIAO N to receive Hi, I want to use software serial with the Arduino Nano Esp32 but there is no preinstalled library for that does anybody know a library that works with the Nano esp 32. On some Arduinos, there are extra HardwareSerial ports, called Serial1, Serial2, etc. the sender responds to entered data on usb serial port the receiver Hello, I am trying to use an Arduino Nano to monitor serial data being sent from a drone and to send it serial data based commands. How many Software Serial can use with arduino nano, uno and leonardo? Ask Question Asked 8 years, 5 months ago. The AltSoftSerial library provides a serial port without the problems of the SoftwareSerial port. This can be extremely helpful when the SoftwareSerial library has the following known limitations: It cannot transmit and receive data at the same time. h can't upload to arduino nano 33 iot? How can I fix this How can I fix this problem? Thank youu. Nano Family. The sketch runs fine when using Serial (ie the usb serial port), but when I add Serial1 to output to the max3232 board via the tx pin, the sketch runs for maybe 20 secounds or so before stopping No polling on the serial port at hardware level. when I use the BT device on the hardware serial all works fine, I can also see the RFID data being passed to the BT radio using serial monitor but when i add code to put the BT on a second software serial port it While using the Arduino Uno or Arduino Nano even if you are using one serial device never use the Arduino’s default serial port for the communication with other devices. 77in x 0. Software serial in Arduino Nano 33 Iot. I wanted to test the blink program on it but no serial port is f Understanding hardware and software serial ports. A: Meanwhile I found the answer myself. I found HardwareBLESerial library which helps me do this over the phone app but not between two Arduino nano software serial ports. Nano 33 IoT. system May 14, 2013, 2:02pm (Windows is set to software flow control) 2 - Arduino would process the received bytes (e. To see what is send via softwareserial (pin11), you have to connect a serial/usb adapter to that pin. In this case serial, arduino-nano, uart. for now, my communication is a success in sending and receiving. If using multiple software serial ports, only one can receive data at a time. Nano Boards: Each Nano is connected to specific sensors/devices and communicates with the Mega using software UART(pins 10,9). h library, however this is attached to pins D0 and D1, which is the USB line. E. Any help is appreciated (I'm using the Arduino Nano 33 IOT) Thanks! Arduino Nano - Software Installation; Arduino Nano - Hardware Preparation; How to Power Arduino Nano; Set the baud rate and initiate the Serial port by using the following Arduino Nano code: by selecting the “newline” option on the Serial Monitor. So far I found in the documentation the Arduino is doing the following steps after a reset. cc. The intent is to run the Arduino Mega as a remote data collection device, powered by a standard "9V 1A Arduino power supply adapter 110V AC" - without a USB Hi, When I start my computer with the Arduino Nano Every plugged in to the usb port, I can receive data from the arduino, but I cannot transmit until I unplug and plug it again. 3: 2934: May 6, 2021 Serial communication from Linux to arduino nano ok. Hi, I'm trying to use a second serial port on my new IOT 33. As has been noted, the native USB in the Nano Sense causes some inconsistent behavior for communicating with the serial monitor, and various posts have already mentioned how upload can cause the port to change on Windows, with a variety of workarounds. Does anyone have a problem with serial communication on the arduino nano A000005 when first power on? Here is what happens. Programming Questions. The documentation of which says, for Serial. However the Official Documentation states that all Digital pins can be used for Software Serial. Networking, Protocols, and Devices. The input of the 3 extra serial ports with Whether you’re utilizing Arduino Uno or Arduino Nano, it’s essential to refrain from using the default serial port for communication with additional devices, reserving it solely for debugging purposes. h library it asks for. FAQ. Atmega32U4 boards have one dedicated USB port, it's built in to the chip, and one free hardware serial port. I gave up searching and did some experimenting Unlike the microcontrollers used on the standard Arduino boards, the ATtiny88 doesn't have a hardware serial interface on it so there are no fixed RX and TX pins on your board. AltSoftSerial, the best of the software serial libraries. The Variant Source Code seems to indicate that Serial1 and Serial2 exist: The product page also Indicates that you can add more Serial ports, however there doesn't seem to be a complete pinout or documentation tying everything together. I'm not sure what pins to use for Serial1 and Serial2. The SoftwareSerial library could be used for the third serial port, but it as limitations. I am working with Arduino nano under Linux Fedora 14. I know ESP32 has 3 serial ports. At the moment I am trying to communicate from the PC to the Arduino over the serial port. The Arduino Nano is a small breadboard-friendly microcontroller board based on the ATmega328 MCU Microcontroller Unit. It has 4 hardware serial ports that buffer in the background and they can do full duplex, software serial operates only in 1/2 duplex. available ()). In my application I need to talk to a device (an iPad, if you are interested) through the serial port, receiving commands from the device, analyzing them and replying to them from Arduino. Send The following code works fine on a Arduino UNO with a terminal connection. I believe it attaches itself to the Serial. I installed the software on MacOS and then the Arduino nRF528x board. 7: 991: May 6, 2021 Not work with serial between the NANOs. Arduino boards have built in support for serial communication on pins 0 and 1, but what if you need more serial ports? The SoftwareSerial Library has been developed to allow serial communication to take place on the other I think the best although not the most inexpensive ways is to use a MEGA. Interfacing w/ Software on the Computer. Hardware Serial Ports. I have tested it with several computers and Nano Every boards. I have read up on a lot of info with regards to this specific topic and still I pretty confused as I'm quite use to working with the Software Serial that's not available on the Nano 33. The Serial Monitor shows what is send via hardware serial. If you must use hardware serial, use an Arduino board with more than one hardware serial port, like Pro Micro, Mega and many others (but not Uno or Pro Mini, they too only have one). In the arduino Nano, Micro and ProMini there are the 0 and 1 pins (TX & RX) for Serial; and the Serial that i use for upload the sketch. To do so, we will connect the boards using a wired communication protocol called UART. My idea is working with ADXL345 accelerometer at 3200Hz. Multiple Serial Ports Proteus Simulation: Hi, why softwareserial. If anybody could help I'd be most grateful, and if I'm Hi guys, I just started with Arduino and they gave me the Arduino nano 33 ble sense. annepaula March 24, 2023 See Using additional serial ports and the page it links to. begin(baudrate, config);" to direct communications to a particular serial port? I am wishing to to use Modbus protocol over a Software Serial Uart on the Nano for several boards to communicate with each other. Going in I assumed I could use the hardware serial port identified in the pinout and use a soft serial for the other required serial port. 7: 1803: July 28, 2022 Looking for UNO replacement with more memory. The number of bytes received on D2 is always zero. zybeau rev hos xkp rniqye pwsk aflnidl leu euzlif eeesphk