Using the Arduino Nano V3 as FTDI

Projects Networking, Protocols, and Devices
1

This is my first post so please be gentle if I am not in the right forum :smiley:

I have a Arduino Nano V3 that I used a USBasp to load the boot loader. All went well on my mac.

Now I want to use the Arduino Nano as an FTDI breakout to program an STM32 device because my FTDI is 2 weeks away. I wired as Follows:

Nano Target FTDI
J1:TX -------- Pin 3: RX
J2:RX ------- Pin 2: TX
J27:5V ------ Pin 4: VCC
J29: GND --- Pin 6: GND

I used cool term to connect and am getting data but it is not responding correctly. My questions are:

  1. Did I wire it correctly?
  2. Does the FTDI communicate directly when wired this way or do I need to eliminate the atmega 328 from the circuit? I cannot remove it, it is soldered in. Should I ground the reset or is there a sketch available to do this?

Everything I read seems to suggest this should work as is but would like conclusive confirmation.

2

What is TX on the Nano? The ATmega TX pin? In this case you have to cross TX/RX.

3

I did as shown in the pinout to standard FTDI connector above.

4

skripo:
This is my first post so please be gentle if I am not in the right forum :smiley:

I have a Arduino Nano V3 that I used a USBasp to load the boot loader. All went well on my mac.

Now I want to use the Arduino Nano as an FTDI breakout to program an STM32 device because my FTDI is 2 weeks away. I wired as Follows:

Nano Target FTDI
J1:TX -------- Pin 3: RX
J2:RX ------- Pin 2: TX
J27:5V ------ Pin 4: VCC
J29: GND --- Pin 6: GND

I used cool term to connect and am getting data but it is not responding correctly. My questions are:

  1. Did I wire it correctly?
  2. Does the FTDI communicate directly when wired this way or do I need to eliminate the atmega 328 from the circuit? I cannot remove it, it is soldered in. Should I ground the reset or is there a sketch available to do this?

Everything I read seems to suggest this should work as is but would like conclusive confirmation.

Members
I know its an old post but is this possible to use a NANO as FTDI to upload a sketch? Ive got a FTDI1703-C on my NANO board.