Pages: [1]   Go Down
Author Topic: Help with Arduino Uno as UART-USB converter  (Read 674 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 6
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi everyone! I'm looking some help..

Recently I bought an Arduino Uno and for now, I need to use it as a UART-USB converter (just like the circuits with FT232R, creating a virtual serial port).

I try to use Serial Monitor connecting Tx and Rx of the Uno to the Rx and Tx of the other device, but when I send some ASCII caracters from my computer, they seem to go to the Uno and I want to send them to the device.

Can I use the Serial Monitor?
Do I need to use another software, like goSerial or ZTerm? (I have a macbook)
Do I need to remove the Uno's atmega?

I appreciate any help!! Thanks!


Greeting from Chile!
Logged

Global Moderator
Dallas
Offline Offline
Shannon Member
*****
Karma: 207
Posts: 12917
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset


Do you have a jumper connecting RESET to GND?
Logged

Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 538
Posts: 27089
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

You can use the Serial Monitor.

You need to remove the Uno's atmega.
Or connect Reset header pin to Gnd.
Logged

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Left Coast, CA (USA)
Offline Offline
Brattain Member
*****
Karma: 361
Posts: 17294
Measurement changes behavior
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Used that way you must wire pin 0 to pin 0 and pin 1 to pin 1 between the two arduino boards, or if wiring to an external serial device, pin 0 goes to the devices rec input pin and pin 1 wires to the external devices tx output pin. Also you need to be sure to add a wire between the two arduino boards. And as CR said either remove the AVR chip or add a wire from ground to reset pin on the arduino being used as the USB bridge.

Lefty
« Last Edit: February 01, 2013, 01:28:40 am by retrolefty » Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 6
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

It works!! xD

Thanks a lot for your help!!!

I'll sleep well today..


Greeting from Chile!!
Logged

Pages: [1]   Go Up
Jump to: