In serial communication data is transmitted as a sequence in time. Main advantage: much less wires needed. Main disadvantage: Higher bandwidth for the same throughput.
2
votes
3answers
71 views
How can I figure out an unknown UART's speed?
So I have a piece of hardware I'm reverse engineering. I believe I've found a UART on the board. I have an FPGA connected to it that just does:
...
0
votes
1answer
75 views
How to reduce a noise on a serial line
I have set up serial communication between my Arduino and a sensor stamp.
The sensor stamp in question is Atlas Scientific EC stamp.
The communication uses RT232 RS232 serial protocol.
The replies ...
1
vote
1answer
31 views
Connect 8051 serial port to multiple 8051s
I want to design a project in which one supervisor 8051 communicates with four other 8051s. I'd like the students to implement this project with some server-client view. That means that the TX port of ...
1
vote
3answers
47 views
Arduino and FTDI Communications
Short Version
Can I make a serial connection from an Arduino to a device with an FTDI connector?
Long Version
I have a wifi shield for an Arduino that is misbehaving. I know their is an FTDI ...
0
votes
4answers
122 views
Good RS232-based Protocols for Embedded to Computer Communication
I'm working on a project that involves a good bit of data communication between a remote Arduino and a computer. The wireless connection is through a pair of XBees, so we have a RS232 link between the ...
-6
votes
1answer
68 views
Difference between Ethernet and USART? [closed]
As i made literal study about protocols, I came across lot of protocols and there differences but i'm not sure of what is the major merits of Ethernet over USART. lots of websites explained about all ...
3
votes
1answer
98 views
HC-05 Bluetooth module not recognized by mobile phone
Its a bit weird whats its happening with the bluetooth module. Aparently it works perfectly, it gets recognized bt my desktop computer and my laptop, but never gets listed on my mobile phone.
I've ...
5
votes
2answers
114 views
High-speed computer interface with an Arduino
I'm planning a project with an Arduino that involves handling a lot of requests from a host computer, and the standard 115200 maximum baud over serial isn't sufficient. I'd like to be able to get ...
-2
votes
1answer
63 views
I2C protocol for PIC18F45K20 with C18 compiler
I'm currently trying to receive data from the 2-wire serial interface of an image sensor with a PIC18F45K20 written with C18 in MPLAB X IDE v. 1.41. How do I initialize the I2C protocol and how do I ...
2
votes
1answer
83 views
Bit Banging UART
My full code is located here.
Basically, I'm transmitting to an Arduino, and I'm not receiving the correct value (you'll notice I'm trying to send d'22'). Here's the method where I actually bit bang ...
8
votes
1answer
151 views
Arduino serial communication protocol design
I make a drum sequencer interface for electronic music.
It uses an arduino mega as it's microprocessor, and currently it interfaces to a Processing program that I wrote for serial communication. ...
5
votes
1answer
163 views
Serial Communication over 1 Pin?
Okay guys, I'm in a bit of a pickle here. I have the following circuit:
As you can see, pin 3 is my only output. I've actually already had this board printed, so there's not much room for ...
3
votes
2answers
205 views
Arduino Uno R3 hardware serial: peripheral interfering with the USB/Serial-converter?
I like to use the hardware serial port (pin 0 RX and 1 TX) to connect a bluetooth module.
Internally these pins are also ...
0
votes
1answer
17 views
Are there any DIP alternatives to the FT232R?
I'm currently using an Arduino on a breadboard, interfacing with it via a FT232R chip mounted on a breakout board. For my final design I'd ideally like to use all thru-hole components for ease of ...
2
votes
2answers
59 views
Connecting two STM32f4discovery boards
We have two STM32F4Discovery boards with Micro USB's for serial communication.
Is it possible to connect two boards to allow communication between them?
Is there is any different hardware other than ...
1
vote
2answers
57 views
Can the Arduino Leonardo act as a keyboard, mouse, and serial port at the same time?
I am doing a project that requires me to control both a mouse/keyboard combination and a serial port to activate it. (I know, it can prevent me from using my computer, etc. but I have precautions ...
3
votes
1answer
9 views
Ensure serial has been written before executing next line
When executing the following code on my Arduino Micro, only the first line is printed:
...
-2
votes
1answer
58 views
How to read in C from a .csv file (how to send the file to the uC) [closed]
For my project I am using an 32 bit uC from Renesas. I have implemented a serial communication so I can communicate with the uC via hyper terminal. The task I have to do now is to read values from a ...
3
votes
1answer
9 views
Can I use a serial module with a barebones Arduino?
I have recently bought a couple Bluetooth modules that connect to the Arduino via TTL/USB/UART (you use Serial(); to communicate with it).
I don't know if the ...
5
votes
3answers
27 views
How can I create a serial bridge using two Bluetooth dongles?
I own two of the SparkFun BlueSmirf bluetooth modules and I would like to connect them to eachother - one as the master, and one as the slave. It is easy to pair these together using a PC with Putty ...
0
votes
3answers
116 views
Connecting more than one serial device to PIC16f877a
In my project i need to interface a gps receiver and a gsm modem to pic16f877a, But there is only one set of UART lines in this Microcontroller. Is it possible to multiplex these two devices using ...
0
votes
1answer
117 views
Arduino MEGA ADK: read data from usb(not serial)
I'm new on this field and I've spent my last 3 days searching for a way to read some data from a usb device(http://www.willow.co.uk/TelosB_Datasheet.pdf). It sends packets of 12 octest and all I want ...
1
vote
2answers
119 views
Can I connect a “J1708” port to my computer?
This question is related to another question I posted here on the new Reverse Engineering site.
I'm working with a small public transit agency on a neat open-source project that will help us to ...
-1
votes
1answer
58 views
XBee Design and UART characteristics
I want to connect XBee to PC , does xbee send serial data or need UART to do that ?
1
vote
1answer
52 views
Calculate sum check
I'm trying to send some serial commands.
In the manual of the hardware it says:
Sum check byte is the summation of all bytes. Higher order bytes are ignored and and the final result is modified. Bit ...
1
vote
3answers
177 views
Will a 3V3 rated UART be damaged by applying 5V signals?
If I have a device specified for 3.3V operation and I connect a 5V level TTL signal to it ? Will it's UART ports be damaged or not ?
I have a WiFi module and I want to know if its UART ports will ...
0
votes
1answer
102 views
Problem connecting UART Wifi Module to PC
As refereed to my old question ( Connect UART WiFi module to PC ) which has been solved that days, I have a UART Wifi module ( this one ) and unfortunately I have problem again ! The point is, this ...
0
votes
1answer
190 views
Standard pinout for RS-422?
I am making a custom connector that will carry several signals to a test board including RS-422 RX+/RX- and TX+/TX-. The strange thing is that I didn't find a standard pinout for the DB9 connector ...
0
votes
2answers
144 views
RS 232 serial sniffing
We have a task in hand to sniff a RS232 protocol in a certain industrial automation setting(we have been asked to do this legally by the manufacturing company itself). We are planning to send a ...
2
votes
2answers
132 views
Best microcontroller electrical bus for high speed synchronized sampling from slaves
I have an application which requires that I sample a dozen of sensors for each node and transmit the data to a master microcontroller in regular four second intervals. The surface area of the sensors ...
0
votes
1answer
204 views
arduino-sim300 gsm communication
I am establishing a serial connection between the arduino uno and the sim300 gsm module.One way of doing is removing the max232 circuit and soldering tx rx wires from there onto the arduino board. A ...
0
votes
1answer
208 views
STM32 - PC serial sommunication
What are the available options or ways to connect the STM32 discovery board using UART to a PC via USB or the serial port ? What is the required hardware/cables ?
3
votes
1answer
213 views
STM32 USART loopback
Is it possible to connect the Rx and Tx pins of the same USART or on two different USARTs on an STM32 discovery board to make a loopback and test the USART?
2
votes
1answer
396 views
Raspberry Pi USB-to-Serial Atmega328
I understand you can create a serial transmission between the Raspberry Pi and an Atmega328 using the GPIO:
http://www.raspberrypi.org/phpBB3/viewtopic.php?t=22736&p=293668
I'm interested in ...
1
vote
1answer
195 views
Arduino with Parallax RFID reader storing variables in char
I am quite new to electronics and have been tinkering around with this Arduino UNO w/ WiFi Shield and the Parallax RFID R/W Module.
Link to the RFID Module: ...
4
votes
1answer
77 views
How do I connect a signal shield to minimise noise from close proximity AC
In my proposed application, I will have approximately 30 RS-485 nodes configured in 3 chains spaced ~1m apart. There is a need to pass through 240v L-N-E, +5v, A, B, GND in each node. The physical ...
3
votes
2answers
128 views
Is it OK to have data lines and AC in the same multicore cable?
I need to provide the following over sections of 1m multicore cable, totaling around 15m.
240v AC
5v DC
GND
RX
TX
Will the AC cause problems for the Serial data?
0
votes
0answers
91 views
Communicating an Arduino with a Data logger
I need to communicate a Sharp Dust sensor to a Data logger for a weather station project. It was straight forward to communicate other sensors (wind, temperature) as they were ready calibrated from ...
0
votes
2answers
75 views
Arduino Time.h - Resets on Serial Connection for Sync
I realize and understand the problem with arduino boards resetting whenever you open a serial connection as stated and answered here.
However, because of that I'm trying to figure out how various ...
1
vote
2answers
243 views
PIC16F877A (with LCD) not working
I have designed a PIC18F877A micro controller project to read temperature from an LM35 using ADC, display it on an LCD and transmit it to a serial port.
When the program starts, sometimes it shows a ...
2
votes
2answers
155 views
Applescript to Arduino LCD only works with Serial Monitor
I spent all day trying to figure this out and finally got somewhere that atleast lets me know that I am doing something weird...
I am trying to send data to my LCD Screen on my Arduino Uno, but for ...
-1
votes
1answer
152 views
All I want to do is send text to my Arduino and display it on an LCD Screen via Serial
I have been working on this for hours and have no idea where the issue is...
So I have the following code...which when I type a letter into the Serial Monitor I get the binary code for that letter on ...
1
vote
4answers
2k views
Python serial between Arduino and Raspberry Pi: Data is modified upon reception
I'm using an Arduino for sensor readings and sending them to a Raspberry Pi via USB, using PySerial for data reception.
It works great, except for the fact received data is awkwardly modified (And ...
1
vote
3answers
123 views
Microcontroller hanging during serial communication
I was working on a project in which microcontroller is communicating serially with computer.
Initially it works properly but after some duration (i.e 2-3 hours) microcontroller get hanged.
I think ...
0
votes
0answers
197 views
How to communicate between RFID reader and Arduino
I am starting with a RFID Arduino project and I am stuck at the beginning. My aim is to communicate between RFID reader and Arduino.
Components : Arduino Mega 3.3 and RFID Tagsense ZR-100 ( ...
2
votes
2answers
179 views
Sync 12 Arduinos - I2C vs Serial
I've been given 12 arduinos (Mega) and 12 breakout boards (custom built. they pump up the output of the digital pins to 12v @120mA) to control around 300 LEDs. I'm using a pseudo PWM library to fade ...
1
vote
1answer
53 views
Device Descriptors in Serial Communication
I was wondering if there was any Descriptor part in the data packets during RS 232 based Serial Communication. If not (apparently) then how does the computer decide regarding the type of device ...
-3
votes
1answer
123 views
How to interface my embedded system to a piece of .net software? [closed]
I have an embedded system powered by a microcontroller. I wanted to design a PC based interface in .net for that system. I am interfacing the Microcontroller with the PC through the RS232 serial COM ...
3
votes
2answers
270 views
SoftwareSerial on Arduino Mega
I'm trying to figure out if I can send and receive serial data on ports 23 and 25 of the Arduino Mega 2560, and I'm very confused by seemingly contradictory information on the Arduino website.
From ...
0
votes
3answers
203 views
Serial communication in Atmega128
I want to send some string to PC via serial port. In cute com (software) its displaying the string but with some chars missing. Also some hex numbers are appended at the start and end of the string. ...
