Questions tagged [uart]
A UART is a Universal Asynchronous Receiver/Transmitter. This refers to the "hardware" serial port in the processor. Use this tag for questions about hardware serial.
250 questions
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Missing data when communicating over UART
So I am working on an Arduino project and have trouble communicating over UART.
I have a SIM7600G-H 4G Module from Waveshare and hooked it up to an Arduino Nano ESP32. The connections are as follows:
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How many FPS I can theoretically get for streaming frame from OV7670 with this setup?
Setup:
OV7670 -> STM32F103... --USART--> ESP01 --UDP--> Gateway --> Internet --> Server
I want to achieve a real-time streaming experience.
Here is my analysis:
According to the ...
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Interfacing A9G with Arduino for AT commands testing
I am trying to hook up to an A9G Pudding GSM board via an Arduino. I intend to use the onboard UART chip to facilitate TTL-UART conversion between PC and A9G.
I have initiated a software serial ...
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Arduino board with StandardFirmata doesn't respond to C# and Python client
I have a Seeeduino XIAO board with Firmata running on it. I'm currently trying to write C# client to communicate with this board.
I have tried using Iot.Device.Arduino, SolidSolis.Arduino and ...
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UART - Different results between logic analyzer and an Arduino [closed]
I would like to decode a serial communication.
I have already found out how the protocol works. I can also send serial data with my logic analyzer and control the device this way.
I would like to ...
Jens1888
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Best Solution to Parallel UART reads with Arduino Due
I have 4 Arduino boards pushing data over UART to 4 serial ports on the Arduino Due at 115200 baud rate.
Data format - <Short URL>,<Number of the Node>
Eg: px.ht/d/mCxG,1"
Arduino Due ...
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Is it possible to use UART0 freely when connecting ESP32 s3 via USB (D+, D-)?
I've designed a test PCB that utilizes an ESP32 S3 and testing pins. During program uploads, I use the USB interface over GPIO20 and GPIO19 as D+ and D-. Everything works fine in this configuration. ...
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Using Soft UART - how include library
I want to use the soft serial communication example.
But when I compile it, it sais:
/home/xxx/Arduino/SoftwareSerialExample/aa/aa.ino:28:28: schwerwiegender Fehler: SoftwareSerial.h: Datei oder ...
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How to optimize checking for specific string in a UART stream
I want to check for specific string (like "RecordStart") in a UART stream (115 200 baud 8N1) from a camera, to know when it is recording or not/if there is an SD. I am using an ESP32-WROOM-...
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Arduino M0 pro(ATSAMD21G18A-U) to NEO-M8N-0-10 gps interface issue
i trying to interface ATSAMD21G18A-U to NEO-M8N-0-10 gps by using UART.
my problem is here, i need to use pin 25(rx) and 26(tx) of arduino to interface. i have tried below. but getting
error:C:\Users\...
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Troubleshooting UART communication between nano 33 ble sense r2 and Adafruit Feather 32u4 with LoRa Radio Module
I've tried connecting the gnd's for both the boards and have connected rx to tx and vice versa in both the boards. I've powered both by batteries, and I'm trying to get sensor data from the nano, and ...
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Communication with scale via rs232
I need help with an Arduino project. I want to read values from a TCS150 scale using the serial port. The hardware I have is an UNO R3 board and a MAX3232 level converter.
I have connected:
MAX3232 ...
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Reply from the SIM800l module is being cut short
I have a sim800l module connected to the Rpi pico hardware UART
/*
SIM800 RPi Pico
5v *External 2A 5v supply*
GND GND
VDD 3v3
TXD GP1
RXD GP0
*/
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ESP8266 module doesn't respond to commands and sends garbage to serial on boot
I bought a ESP8266 module (like this).
I connected the module like on the following scheme:
I use a USB to TTL converter (cp2102) that I've connected to RX&TX pins of the module. It works. It ...
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How to read and parse UART data from human presence radar sensor
I'm working on a project, and I purchased a 24 GHz "Human existence/presence" mm Wave sensor from micradar, the R24DVD1. The output of the module is serial data which varies in length and is ...
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Trouble connecting barcode scanner to ESP32 devkit using UART - fails to connect over serial
I'm having trouble connecting a SparkFun 2D Barcode Scanner Breakout (effectively a DE2120) to a 30-pin ESP32 dev kit v1 (marked ESP-WROOM-32) and running the SerialScan sample application for this ...
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Can read Serial but cannot write - serial communication Arduino Mega 2560 clone
I am having issues using the following USB to UART module. I am using an Arduino 2560 clone.
I have two connections with the Arduino:
COM7 which consists of the given module, connected to the main ...
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CH340G based USB to UART adapter - Pinouts - Can't find schematics
This is the board I will be referring to.
There are different variations of it (with built in buttons etc.) but they all seem to be based on the CH340 chip.
My problem is, that I do not know what the ...
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Trying to understand the bottleneck of sensor sampling rate
Lets say I have a sensor connected to Arduino Uno Rev3's I2C Bus. I am reading the sensor output and using Serial.print() to send the sensor reading back to a my laptop.
I am trying to understand the ...
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Arduino Nano and ESP32 Read Different Values over Serial
I am trying to use the Neato xv11 lidar with an ESP32. This should output packets of 22 bytes with the starting byte 0xFA. The communication is 8N1 and the baud rate is 115200.
When I connect the ...
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UART connected device communication only works one way
As the title implies, I have two Arduino devices (Uno and Mega) connected to each other over UART (the Mega is hardware UART, the Uno is software UART); I need the Mega to send a command to the Uno, ...
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Serial comm UART1 works on Arduino but makes ESP32 continuously reboot
This comm sketch simply read incoming bytes from the UART 1 where a device is attached.
It works normally on a real Arduino device.
But on ESP32, it makes it continuously reboot with the following ...
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Bi-directional UART communication on single data wire, possible?
The nano is inside of the house, and the pro mini is outside of the house. I want to send/receive text between them. The communication will be always nano sending text to mini, and then mini sending ...
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configuring characteristics to communicate data on the Arduino bluetooth low enegy module
I have the HM-10 Arduino BLE module. I am also building an app to send and read characteristics on the BLE module. On the Arduino BLE side of things though, how do I set up which characteristic ...
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receives 0 0 instead of "hello"
I receive the following:
09:27:10.618 -> 0 0
09:27:12.589 -> 0 0
09:27:14.616 -> 0 0
09:27:16.622 -> 0 0
09:27:18.576 -> 0 0
09:27:20.577 -> 0 0
09:27:22.583 -> 0 0
09:27:...
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