I want to use UART/USART with Teensy++ 2.0. But I'm beginner.

[Deleted_User]

I have never assembled an electronic circuit.
I already have Teensy++ 2.0 and want to pass input from a PC by UART/USART.

I found that to use UART/USART, I need a USB Serial conversion module.
Because I can buy it easily, I will use AE-FT234X.
And I thought about a wiring.
Is this correct? (Image)

FT234XD datasheet & info.
http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT234XD.pdf
http://akizukidenshi.com/download/ds/akizuki/AE-FT234X_B5_DS_20150608.pdf

 

[tonton81]

it depends what your connecting to the UART whether you need that converter or not

 

[Deleted_User]

Thank you for reply.
I want to send the data from a PC to Teensy++ 2.0 with UART.
And I want to send something from USB Port of Teensy++ 2.0 to the different device.

The data are made by the script on PC.
I intend to rewrite Teensy many times. So I want to use UART.

 

[Deleted_User]

Or do I need a power supply? like this image.
Anyway, I do not know whether this wiring is right because I'm a super beginner.
help...

 

[Chris O.]

If you're a beginner then get one of this https://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Delectronics&field-keywords=ftdi
Just make sure it's the 3.3v version if you're on teensy 3x.
EDIT: You got teensy 2++, so get the 5volt version.

 

[Deleted_User]

Thank you for reply.
I intend to buy AE-FT234X. It is written that it can be used because it is 5V tolerant.
+5V is supplied from USB (USB bus Power). Although TXD and RXD are 3.3V, they are 5V tolerant, so they can be connected to 5V series microcontrollers etc.

If I can not use it for Teensy++ 2.0, I will buy FTDI 5V.
Will AE-FT234X be useless...?

 

[Chris O.]

Will AE-FT234X be useless...?

No, but you are claiming to be a beginner?
PCB circuit designing and soldiering doesn't sound like beginner to me?
EDIT:
And to be specific yes it will work I was just trying to offer the easy way out.

 

[Deleted_User]

I am serious. I do not tell a lie.
I can only build a PC and write some programming.
If I am asking a screwy question, I think that's because I'm a beginner.

I want to send data to Teensy++ 2.0 using UART.
Is this too difficult for beginners?

 

[Cosford]

Let's get this straight.

Are you just wanting to have the PC send and receive serial data to the Teensy?
If so, you need nothing more than the teensy itself and a USB cable; the teensy 'talks' USB serial and power is supplied through that cable.

 

[Deleted_User]

teensy 'talks' USB serial and power is supplied through that cable.

I think that I understand that.

Because I cannot explain it well , let me use this image.
Script sends the data from PC to Teensy, Teensy sends the data to another device.
I want to do this at the same time.