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Questions tagged [software-serial]

54 questions
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Software serial communication on Arduino getting something what I don't send

I am trying to communicate a lot of arduinos with software serial. There will be one master arduino it will have 1 software serial port. And there will be lots of slave arduino and they will have 3 software serial ports. Master arduino will connect…
Oğuz Kağan
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Arduino not writing full NMEA sentence to SD-card file

I'm currently building a small GPS-box that's supposed to track my location and write the full NMEA sentence to an sd card. (I want to pars it afterwards at my pc) I'm using the Arduino Nano and the NEO-6M GPS Module to get the data. What works:…
DerEntinator
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Cannot println to Serial if I connect to a SoftwareSerial

I want to connect a HC-05 Bluetooth module to an ESP8266 and use the input received from the bluetooth module in an if/else statement. When doing this I can receive data from bluetooth to the serial, but then I cannot use the Arduino IDE serial to…
Bart
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Sending sensor info to ThingSpeak through Arduino Uno r3 and ESP8266-01 using wifiManager

I have a project in which I have a water level sensor connected to my Arduino Uno r3. I have an ESP8266-01 module connected to my Arduino. Using AT commands I was able to upload the sensor result to ThinkSpeak. However I wanted to be able to log…
user1114881
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Crash when reading const* in c on ESP8266

I'm making a system that reads sensor value from Arduino Uno through SoftwareSerial and publishes it via MQTT. However, the problem I'm facing I think is more general, I must admit I am new to c. I'm reading the data, and splitting it into two…
Vincent Vega
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Software serial not displaying anything (SIM 800L)

I am using a LCD with a temperature sensor and wanting to send a text whenever the temperature reaches a certain degree Celsius. The GSM module SIM 800L is currently blinking every once every 3 seconds so it seems to work. Other scripts used seem to…
Hashim Shakil
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Arduino receive data from software serial

Sorry for my weak English. I'm trying to receive the json data from Sim800 on my Arduino. To read the data on the serial port I used the following code: while(serialSIM800.available()==0); //Wait until the data is received String content = ""; …
omid ebrahimi
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No data received from two different Serial Port Arduino Uno

I am currently trying to to use two different serial ports on my arduino uno that is (2,3) for gsm and (8,9) for gps. I have tried both of this links; 1) arduino-uno-with-multiple-software-serial-devices 2) Two port receive using software serial…
Asyraf
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How to connect Arduino due to GPS module?

I am working on an Arduino project, I am beginner with Arduino, so I started to get code from the Internet and trying to study and understand it, https://www.hackster.io/bigboystoys13/diymall-gprs-gps-sim5320e-3g-module-at-commands-d1cbfe I tried to…
user8346623
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Arduino SoftwareSerial Rx/Tx pin order error?

I'm writing code to run on an ATtiny being programmed by an Arduino as ISP. The ATtiny is to send AT commands over serial link to an RN42 Bluetooth module. Since the ATtiny has no UART I'm using SoftwareSerial on pins 0 and 1. It seemed logical to…
Matt K
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Bluetooth Soft Serial and PS2 controller on Arduino Leonardo

I am trying to combine two input sources that are recognized as a single gamepad/controller. For that purpose, I am using an Arduino Leonardo that can be easily transformed into an HID device using the Joystick.h library. As inputs, I am using (1) a…
Aleks
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How can I mimic reading multiple RFID readers through Softwareserial library in a loop?

I am working on a project that requires reading from six ID-12LA RFID readers simultaneously. I’ve tried setting up readings from six channels through the Sparkfun Analog/Digital MUX Breakout board (CD74HC4067), but without luck. I don’t know if it…
carolinesabas
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Arduino Nano Gnss Software Serial

I want to connect Arduino nano and GNSS (SIMCom’s SIM33ELA standalone GNSS module). First I wrote a program for rx/tx, which is worked well, but now I want to use Software Serial and I got something wrong data. #include char…
Gábor Kőrösi
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Software serial issues

i have a Genuino101 board and HM-11 module. Im trying to set the parameters of the module like name, etc. So i started with a simple code but it doesnt work. As we can see, my serial monitor is supposed to show "SETUP 1" and "SETUP 2". But this is…
xchan
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Why SoftwareSerial doesn't work on Atmega128

I am writing a program in Atmel Studio 7 that I just installed and started using. I have set up the studio for Arduino and added the Atmega128 to the library of supported chips. All is good there. When I try to use the SoftwareSerial library and…
Eddie
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