Using Arduino UNO as FTDI

Question

so , just bought some pre-bootloaded ATmega328(p/pu) to which I need to upload sketches on a breadboard using uno TX and RX pin as FTDI

Here is what I am to do.

I connected Uno GND and Reset .
Arduino Tx to Standalone Atmega Tx
Arduino Rx to Standalone Atmegaa Rx
Connected Crystal , capacitor to standalone pin 9, 10 (XTAL) then grounded it with 2 coupling capacitor.
Standalone vcc to arduino 5v Standalone GND to Uno GND

Is it possible to do what I need to or i need to buy some USB to TTL devices from the Amazon again?

Thanks for your precious time...

score 3 · Answer 1 · answered Oct 28 '20 at 04:43

3

https://youtu.be/EoHD0m3uUhA. Ig this should do it. There are many more tutorials on YouTube to achieve this.

answered Oct 28 '20 at 04:43

xbox gamer

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score 2 · Accepted Answer · answered Oct 28 '20 at 14:23

That sounds about right.

The only problem is that normally, when a serial connection is created, the Arduino's reset pin is briefly pulled LOW. You would have to do that manually on the ATMega on your breadboard. I can be a bit tricky to get the timing right.

There is no easy way to get this signal to your breadboard ATMega, while keeping the reset pin on the UNO's ATMega LOW.

Removing the ATMega from the UNO board would work.

Using Arduino UNO as FTDI

2 Answers2