Today i wanna try to use my arduino nano with external ft232 chip. So i've connected TXf - RXa,
RXf- RXa and Reset(wich my ft232 calls RI) to arduino Reset.
And here is the problem:
When i upload bootloader with USBAsp, and then use FT232 to send program, everything works , but only once. In next try, ft232 tries to initialize, but it wont work. I must to flash bootloader again and now everything works. I dont have idea what's wrong....
Sory for my english I hope you can help me
Thanks !
The DTR or RTS line needs to be connected to one side of a 0.1uf capacitor, and the other side to the Arduino reset. However, this may not work if there are other capacitors connected to the reset line - including the one already soldered onto the Nano board to use the built-in serial adapter on the Nano.
The Arduino Pro Mini does not have an on-board serial adapter, and is meant for use with external serial adapters - it has the capacitor on the board, so you just connect DTR (or RTS) to the appropriate pin. This is recommended if you want to use an external serial adapter.
I hope you can help me