« previous topic   next topic »
Pages: [1]   Go Down
Author Topic: Using mega2560 as a ftdi breakout board  (Read 653 times)
0 Members and 1 Guest are viewing this topic.
foolix
Offline Offline
Newbie
*
Karma: 0
Posts: 5
View Profile
« on: February 01, 2013, 02:06:44 am »
 Bigger Bigger Smaller Smaller Reset Reset
Hi there,

I have a need to program an separate gps device using an application on PC over serial/ftdi, can I use the mega 2560 as a ftdi breakout board rather than buying a separate one? I tried a search buy couldn't find anything.

Thanks in advance
Logged

CrossRoads
Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 437
Posts: 23650
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
« Reply #1 on: February 01, 2013, 02:37:17 am »
 Bigger Bigger Smaller Smaller Reset Reset
?? 2560 doesn't have an FTDI chip.

You could try grounding the Reset pin on the header, and connecting to the Rx & Tx pins at the D0/D1 header, connect to Gnd also, using the ATmege16U2 as the USB/Serial adapter for your GPS device.
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.

foolix
Offline Offline
Newbie
*
Karma: 0
Posts: 5
View Profile
« Reply #2 on: February 01, 2013, 02:54:37 am »
 Bigger Bigger Smaller Smaller Reset Reset
Oh ok, damn. I just assumed that's what it was using for the usb... Looks like I'll just have to get one of these smiley-wink

http://www.ebay.com.au/itm/FTDI-Basic-Breakout-Arduino-USB-TTL-6-PIN-3-3-5V-for-MWC-MultiWii-Lite-SE-/300854663806?pt=AU_Toys_Hobbies_Radio_Controlled_Vehicles&hash=item460c55da7e&_uhb=1#ht_6124wt_952

thx.
Logged

foolix
Offline Offline
Newbie
*
Karma: 0
Posts: 5
View Profile
« Reply #3 on: February 01, 2013, 04:41:51 am »
 Bigger Bigger Smaller Smaller Reset Reset
Is there a way I can just use the arduino as a usb to serial converter with the arduino effectively in series with the computer and target device?
Logged

Erni
Denmark
Offline Offline
Edison Member
*
Karma: 35
Posts: 1029
Happy Hobbyist
View Profile
WWW
« Reply #4 on: February 01, 2013, 07:12:06 am »
 Bigger Bigger Smaller Smaller Reset Reset
Quote
Is there a way I can just use the arduino as a usb to serial converter with the arduino

As CrossRoads says:

Connect a jumperwire from reset to ground.

Just to be sure nothing bad happens to your Arduino you should first upload
an empty sketch to the UNO, and connect a 220 ohms resistor between The Uno and target device

Alternatively you can remove the Atmega from your Arduino
Logged

Docedison
Anaheim CA.
Offline Offline
Faraday Member
**
Karma: 44
Posts: 2808
...
View Profile
« Reply #5 on: February 01, 2013, 10:47:11 am »
 Bigger Bigger Smaller Smaller Reset Reset
The FTDI board you referenced is a really good product and a very nice price. I don't know the exact exchange rate but the part is under $3.00 US, a very good price and the solution to a lot of potential issues.

Bob
Logged
--> WA7EMS <--
“The solution of every problem is another problem.” -Johann Wolfgang von Goethe
I do answer technical questions PM'd to me with whatever is in my clipboard

Pages: [1]   Go Up
« previous topic   next topic »
Jump to: