I can´t connect CP2012 to arduino UNO

Using Arduino IDE 1.x
1

Hi!

I need a great help. I have made an Arduino UNO. It works ok. The blink is working. But when I try to connect an USB serial CP2012 I can´t make it to work.

Really I don´t know how to connect it. I connected RX to TX and TX to RX. GRND to GRND and VCC to Vcc, but when I try to upload the scketch it´s stopt in Uploading, and after it I get an error not SYNC.

Please I need your help. I have navigated for Internet but, I can´t to make it work.

Thanks.

2

What do you mean you "made an Arduino Uno" ?

3

Home made Arduino? Did you built it right? A lot of build guides online omit the 0.1uf decoupling caps that are needed between each power pin and ground, right next to the pins (these are required for reliable operation). Did you put the bootloader on it? Unless you used a pre-bootloaded chip, you need to do that before you can upload over serial. Some chips sold as having the arduino bootloader on them have the wrong bootloader, or are actually blank.

4

Doesn't read like you have a 0.1uF cap between DTR and Arduino reset (which also needs 10K pullup to VCC).
Without that there is no PC software generated reset to start the bootloader. (assuming there is a bootloader installed).
The cap to RTS may also work. Be sure not to use RTS, which is usually the CP2102 reset line.

If DTR/RTS is not available, you can do a manual Reset of the Arduino when the IDE shows "compiled xxx of 32xxx bytes".
(easier to find the timing if you select File:Preferences and enable Verbose output).

5

Thank you everybody. My english is worse than my spanish :slight_smile: I´sorry :slight_smile:

IEEE48: I made is I made a copy of Arduino UNO with a AT328 and several pieces.

DRAZZY: I load the bootloader of Arduino Uno in oit and the BLINK is working :slight_smile: But I havent the 0,1uf connected.

CROSSRoads: The cap of 0,1uf is perhaps my problem. That´s the first time that I read it. Thanks. I´ve the resistor between Reset and Vcc, but not the cap. I have the button between Reset and ground but to change it between compiling an loading is a little difficult. I tried it several times but without results.

I´m trying with the cap, but allways I received the same message that I´m sending in the *.png.

Thanks for your help. I´m thinking to forget home made Arduino Uno and to buy another one That´s will be better for my brain :slight_smile:

Debug.png