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Questions tagged [baud-rate]

Refers to the symbol rate and so the number of symbol that changes per time unit.

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45 views

Arduino baud rate 8 times too high?

I'm having a strange issue where in order to get the expected serial output on my serial monitor, I have to set the baud rate on my serial monitor to be 8 times higher than the rate that i set in my ...
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2answers
78 views

Two serials can't work on the same speed

I have a device which sits on pins 10/11 of Arduino UNO. I am trying to send commands from my PC using Arduino to relay my commands to the device via Serial. The problem is that if I use speed 9600 ...
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1answer
815 views

How to work with non-traditional UART baud rates

I am trying, unsuccessfully to communicate, using my Arduino Nano, with a custom device at a baud rate of 800 kbit/s. The Arduino code look like this: void setup() { // Put your setup code ...
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2answers
98 views

Double Speed Operation for USART on Arduino Mega 2560

I happened to be looking through the HardwareSerial.cpp file that contains the functions used for Serial communication for Arduino. While looking through the HardwareSerial::begin(baud, config) ...
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1answer
146 views

I cannot upload any code to my arduino uno

I am using ardunio uno on a windows 10 machine. I have never been able to upload any code whatsoever. Every time i get different errors, sometimes it's about com port, sometimes about memory, baud ...
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1answer
1k views

Connect Arduino to Socket IO Webserver via Esp8266

As part of a project I want to receive data on my arduino uno via a sensor, which is working fine. This data should be sent to a webserver where a node js with socket io is running. Therefore i bought ...
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1answer
463 views

How to calculate actual Baud Rate and its percent error?

I am using an Arduino Uno, and I need to create a program that calculates the actual baud rate and the percent error for all standard baud rate in Arduino monitor program.
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1answer
1k views

I change ESP8266 baudrate and now it doesn't work

I was trying some AT commands using the monitor of the Arduino Web Editor with an Arduino Uno and a ESP8266 module. It was working at 115200 bauds but then I changed it with AT+CIOBAUD=19200 and now ...
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1answer
174 views

How to change IIC (I2C) clock rate on MKR1000

The IIC clock defaults to 100kb, need to increase it to ~200kb. I've tried: changing the constant TWI_CLOCK and rebuilding Wire.cpp calling initMasterWIRE(200000) after Wire.begin(). I'm using a ...
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2answers
636 views

ESP8266-01 wrong flow control settings

Changed ESP8266-01 to wrong settings by mistake. It was working ok at 115200 (its default settings). It was connected like this: PC->(USB)->Arduino->ESP8266. Using Arduino as bridge Pins 0 and 1 (...
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250 views

Cannot upload to Due

I cannot upload my sketch to my arduino DUE. I get this error: Send auto-baud No device found on COM8 Set binary mode An error occurred while uploading the sketch The IDE recognizes thought that ...
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0answers
208 views

How can i change by esp8266 baudrate, as I accidentally changed the baudrate to something else(which I dont remember)?

//In order to connect, SoftwareSerial esp8266(2,3); // the TX pin of esp8266 is connected to pin 3 of // arduino uno and RX pin is connected to 2 // we need to pass baud rate to begin ...
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109 views

Understanding the ESP8266

I've received my ESP8266-01 and playing with it I discovered that with a baudrate of 74880 I can get the boot modes and `hy version, etc: ets Jan 8 2013,rst cause:1, boot mode:(3,0) load ...
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2answers
2k views

Arduino + L9637 K-Line reader - 10400 baud on SoftwareSerial?

I know this question has been asked many times before in different flavours, but all of the previous questions I have found seem to pre-date the current SoftwareSerial library, which afaik now (unlike ...
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0answers
209 views

Can't send AT comands to ESP8266 on any baud rate

I have problem with baud rate. I have changed baud rate of esp from 115200 to 9600 with AT command AT+CIOBAUD. And everything worked fine until I wanted to change it back and executed command AT+...
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1answer
389 views

Actual baud rate of UNO R3 Firmata protocol

Probably a silly question. But the Internet is confusing me. The Firmata website says the default baud rate is 57600. But AFAIK, the baud rate set for UNO R3 is 9600(In Windows device manager, it say ...
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2answers
134 views

Arduino Uno with UsbSerial Android library w/ baud rate over 9600?

I am having no issues talking to Android at baud rate of 9600. But once I raise the baud rate to anything higher Android seems to become deaf. When I try to read the Serial output using putty all ...
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56 views

serial connection performance drop when receiving AND sending

[short] I am experiencing a big performance drop on my receive rate as soon as I also send data (only 2bytes). How does that come? (see test program below) [long] I am working on a LED matrix (16x24) ...
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2answers
451 views

Avrdude fails at specific baudrates

I'm seeing something very strange. If I run: ard-reset-arduino /dev/ttyACM0; /usr/share/arduino/hardware/tools/avr/bin/avrdude -C/usr/share/arduino/hardware/tools/avr/etc/avrdude.conf -v -patmega328p ...
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1answer
70 views

Alter baud rate after being certain events

I'm using my HC-05 (Master) to receive strings from a sensor (Slave). Each string is supposed to have 7 items divided by ',' like so: a,b,c,d,e,f,g But it isn't always received in such a manner. ...
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0answers
56 views

Maplin Bluetooth Shield for Arduino - BAUD rate

I am currently using a Bluetooth shield which i bought from maplin, see: http://www.maplin.co.uk/p/bluetooth-shield-for-arduino-n97dg. I have got it to work perfectly on the default 38400 BAUD , but ...
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2answers
5k views

ESP8266 12e Arduino IDE outputs garbage values on serial monitor

I recently started using the esp8266 12e (amazon link: https://www.amazon.com/gp/product/B010O1G1ES/ref=ask_ql_qh_dp_hza) and hooked the board up to the Arduino IDE. When trying to run any of the ...
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3answers
15k views

How to increase SD card write speed in arduino

I'm creating a data-logger system which logs data in SD card at a high speed of about 20000-30000 bytes per second. But the SD library in arduino currently writes data at about 4500-5000 bytes per ...
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66 views

Does Serial begin Baud rate matter if not connected to the computer

Does the `Serial.begin(baud)' matter if the arduino is running independently and not connected to the computer?
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1answer
215 views

Is it possible to overclock the baudrate from the mega to 230400 bps?

i have a Arduino Mega 2560 and want send data with 230400bps to my laptop without any framingerror. I want send the data over USB with serial.print ist that possible or must i use the ethernet? When ...
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5answers
44k views

How to change baudrate of ESP8266 (12e) permanently?

IMPORTANT: DO NOT USE AT+IPR=9600! (see update) I have an ESP8266 12E module that communicates at 115,200 bauds. Since I use it with an Arduino Nano with SoftwareSerial things get messy. So I found ...
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2answers
4k views

Can I use two sensors with different baud rate without problems on arduino?

One sensor has a baud rate of 115200, the other 9600. I think this will create problems in the serial because I can only choose one baud rate. What do you think? The first sensor is the pulse sensor, ...
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1answer
720 views

ESP8266 blue led stays stays on [duplicate]

I have found a similar qustion to mine but there was no good response. I've connected my ESP8266 to Arduino UNO. Then I got some trouble with software serial communication with Arduino and decided ...
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2answers
683 views

Baud rate Arduino/Linux

I'm trying to communicate some numbers between a Linux program and my Ardunino Uno. To this end I wrote a C++ program which somehow contains: #include <stdio.h> int a,b; a = 1; b = 2000; File*...
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4answers
1k views

Converting data between baud rates

This isn't strictly limited to Arduino but I spend a lot of time with serial devices on my Arduino and I'm sure that others do as well: Here goes.. Let's say a device sends three characters [ABC] ...
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3answers
640 views

UART error can not compile on Arduino Yun (ATmega32u4)

This code is used for communication between the Glediator interface and a NeoPixel Matrix, but I receive an error saying 'UCSR0A' is not defined within the scope. UCSR0A |= (1<<U2X0); ...
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1answer
607 views

What does serial data look like on an oscilloscope?

How I can find the data field on oscilloscope at 300 baud or at 9600 baud? Could someone show me picture on oscilloscope plase. This is the picture at 9600 Baud
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1answer
2k views

Low Power library messing up serial text

I noticed something unusual using the Low Power library today. When printing text in the loop and using LowPower.powerDown(SLEEP_1S, ADC_OFF, BOD_OFF); to sleep for one second, all the text in the ...
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1answer
2k views

Streaming sensor data over UDP using an Arduino Yún - how to do it and how fast could it be?

The company where I work wants to do a proof of concept for our new product, a force-sensing platform. The platform contains four three-axial load cells, so we have 12 channels, which are to be ...