Looking for cost effective arduino that supports good UART commucation

-

i need send text data on serial port using arduino uart.  in simple project, send text data on tx line , receive same data on other end using rx pin. 

i trying using 1 arduino uno board has 1 hardware uart.  seems uart shared usb.  can not use hardware uart supported on pins 0 , 1.  due limitation, started looking @ using software serial port.  basic testing, planning on looping tx rx.  learnt software serial port can not simulataneously transmit , receive data.


so @ point seems can not use 1 arduinno uno.  @ minimum need 2 arduino uno.  still this, have use in software serial mode.  can not use hardware serial mode shared usb. 

since need purchase second arduiino, know arduinio, should purchase.  seems arduino, megas has more 1 serial port.  better buy arduino mega? 

your feedback please

thanks.

considering arduino mega less $15 not sure why big angst.


Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > Looking for cost effective arduino that supports good UART commucation


arduino

Comments

Post a Comment

Popular posts from this blog

Error compiling for board Arduino/Genuino Uno.

-
hi new arduino , trying write code of temperature controlled fridge can adjust pot , temp in fridge changes lowest setting -15 , highest setting 30degrees. the temp drops below input pot im trying make compressor turn on , light show compressor on. new @ , im still not quite sure im doing. error below keeps popping , im not quite sure whats wrong code. im hoping on close path how should have done it, how fix error appreciated. arduino: 1.8.4 (windows 10), board: "arduino/genuino uno" c:\users\admin\appdata\local\temp\ccfcxdpc.ltrans0.ltrans.o:(.rodata+0x6): undefined reference `print::write(unsigned char const*, unsigned int)' c:/program files (x86)/arduino/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/../../../../avr/lib/avr5/crtatmega328p.o:(.init9+0x0): undefined reference `main' collect2.exe: error: ld returned 1 exit status exit status 1 error compiling board arduino/genuino uno. this report have more information with "show verbose output during comp
Read more

Installation database is corrupt

-
dear all,   last month installed trial version of cs3 on pc , when decided install extended version of cs3, it  didn't install.  learned adobe use wincs3clean script, downloaded , ran on computer, using level 1. after tried installing extended version of cs3 got message "installation database corrupt" , can't install cs3.  can me , let me know how solve problem? use windows, xp 2. appreciate help. charleshhh install what... disc or download   if download... rename original , download again... downloads corrupted More discussions in Photoshop Windows (read only) adobe
Read more

RFID-RC522 with Arduino Pro Micro project. Error on the code?

-
Image
hi all, first of newbie... i trying make below project, keep having type of errors. let start project page: unlock pc/mac rfid my hardware: arduino micro rfid-rc522 code: code: [select] //get library https://github.com/ljos/mfrc522 //sketch: gudjonholm@gmail.com /* pins    spi        uno    mega2560  leonardo 1 (nss) sda (ss)   10     53        10 2       sck        13     52        sck1 3       mosi       11     51        mosi1 4       miso       12     50        miso1 5       irq        *      *         * 6       gnd        gnd     gnd       gnd 7       rst        9      ?         reset 8      +3.3v (vcc) 3v3     3v3       3.3v */ #include <mfrc522.h> #include <spi.h> #include "keyboard.h" #define sad 10 #define rst 9 #define ledpinopen    4 #define ledpinclosed  3 mfrc522 nfc(sad, rst); boolean opening = false; void setup() {   //keyboard.begin();   pinmode(ledpinopen  , output);     pinmode(ledpinclosed, output);     spi.begin();   nfc.begin();   byt
Read more