FT232R Driver with Arduino

[patana93]

Hello everyone!
I hope that this question is appropriate for this forum and section.

I have build an Arduino standalone with an FTDI IC to upload sketches on the microcontroller. I've attached the schematic.
Now I've connected the FTDI with an Arduino Board just to test this module. The Arduino turns on and the PC detect a unknown device as FT232R USB UART. I've tried different drivers but no one works. Someone know how to resolve?

Thanks in advance!

[patana93]

Ok, I've resolved using this official driver:

https://ftdichip.com/drivers/vcp-drivers/

Now my issue is that the DTR pin goes low but never come back to high so I'm forced to push the reset pin in order to upload my sketch. I've also tried to add a capacitor of 100nF from DTR pin and GND but this not resolved my problem. What I could do?

Thanks

[uxomm]

patana93:
Now my issue is that the DTR pin goes low but never come back to high so I'm forced to push the reset pin in order to upload my sketch. I've also tried to add a capacitor of 100nF from DTR pin and GND but this not resolved my problem. What I could do?

DTR pin will stay low as long as there is a serial connection via USB.
You should not connect DTR pin to GND but to Reset using a capacitor.
Take a look at this schematics: https://www.arduino.cc/en/uploads/Main/arduino-duemilanove-schematic.pdf.
Duemilanove used to have FT232.

DTR goes low when serial USB connection is established (and stay low). With the capacitor in series this will produce a low impulse on the reset pin of the ATmega.

[patana93]

Oh no....I'm feeling very n00b xD Let's says that was very late...

BTW thanks for your help! It works like a charm!
Have a nice day

[uxomm]

Good to hear, that it is working now!