Arduino Mini 05, I can't upload a sketch

system · March 8, 2015, 8:39am

Hello,

I connected my Arduino Mini to a USB2Serial (original from Arduino) connecting just:
RX->TX
TX->RX
power supply and GND from USB2Serial direclty.
Reset of Arduino connected to +Vdc through resistance 10K. (avoidning having it floating)

I tried to add a led 1/4W with a resistance of 333 ohm to the pin 13 but I can't see nothing.. when I press reset button the led still off.

When I try to upload a program (e.g. blink) it builds but is not able to connect to the "programmer":

System wide configuration file is "C:\Program Files (x86)\Arduino/hardware/tools/avr/etc/avrdude.conf"

Using Port : COM25
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x01
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x01

the speed od serial port 25 in my pc is 115200 as required by Arduino IDE..

I have some doubts:

why "using programmer" is arduino? It seems that it's trying to upload through another Arduino when I'm uploading through USB2Serial..
RX, TX, Reset, are equal in the Arduino? There are 2 pins for both..
how to handle reset: better to have it disconnected and the button it's enough? I should connect the pin in order to avoid it floating?
bootloader: how to know if it's there? Led 1/4W + 333ohm is ok to see it flashing?
in case there isn't bootloader, I should buy another device to download it? USB2Serial is not enough, right?
any suggestion?

The Arduino MINI 05 is new.. bought from RS-components.

Bye
Andrea

system · March 8, 2015, 9:40am

What USB to serial converter are you using?

system · March 8, 2015, 9:56am

Hi,
the USB2Serial is from Arduino: code:

http://store.arduino.cc/product/A000059

The driver on Win7 installed is called: Arduino USB Serial Light Adapter (COM25)

When I call Update from the IDE of Arduino, the USB adapter flashes RX some times before give me the error.
But.. why RX instead of TX?

Another small detail: on Arduino MINI, the power led is yellow and not green as I can read everywhere.. means something?

Thanks
Andrea

system · March 8, 2015, 6:09pm

Waiting someone that can help me.. answering all (or part of them) my questions doubts, I have an additional question:
Can I download bootloader using a raspberry?
I have one, so..

system · March 9, 2015, 9:03am

How have you got it wired up?

system · March 9, 2015, 10:29pm

Hello,

as I wrote, I connected USB2Serial directly to Arduino Mini:

TX->RX
RX->TX
5Vdc -> 5Vdc
GND->GND

The power is from USB..

I tried to connect reset (ext) from USB2Serial directly to reset input of Arduino..
I tried to connect reset of Arduino to 5Vdc through resistance 10Kohm
I tried using the reset button

Please, help me to understand:
Ho I can recognize if the bootloader is correctly installed? I found different opinion on the web, someone wrote that is enough to see power led on, someone else checking pin 13 with resistance and a led, it should blink after pressing reset button.. so.. what is the best test?

In case the bootloader is not there.. can I download it just using the USB2Serial adapter or using a Raspberry PI B+?

Thanks
Andrea

system · March 10, 2015, 9:43pm

Can you post a link to where the pro mini came from?

system · March 11, 2015, 12:15am

It's from RS-Components:

it's seems declared as delivered with bootloader..

The adapeter is from the same supplier.

Be careful, it's Arduino Mini 05 and not PRO!

Bye

system · March 11, 2015, 8:52am

Press reset just before the upload actually starts to initiate the bootloader. I know how to wire up a pro mini... but can't see the pinout of that board to tell you where to connect the reset to.

system · March 11, 2015, 9:55am

Hello,
Ok.. but, I' sorry.. nothing new.
Can you go through my questions, my doubts to help me?
My question was: how to recognize if the bootloader is really there.
The pinout is easily found in this site, on board section.

Thanks

system · March 12, 2015, 2:19pm

Nobody knows how to check if bootloader is present in arduino mini 05?

system · March 14, 2015, 9:16am

At least, there is someone that has experience using Arduino USB2Serial?
Why it blink RX when I try to Upload a sketch, instead TX?

If the Arduino Mini doesn't response, I'm expecting that only TX is blinking.. isn't it?

system · March 16, 2015, 8:34pm

Hello,

I tried also with a capacitor 100 nF for auto-reset... nothing..

I tried all I guess.. nobody can help me??

system · March 17, 2015, 9:17am

Post a picture of how it is set up.

system · March 17, 2015, 11:02pm

Ok, attached 2 pictures.
I tried also to reverse TX and RX but nothing.

Bye
Andrea

system · March 17, 2015, 11:47pm

Have you tried it without the capacitor in the reset line?

Have you tried pressing reset just as the upload starts?

system · March 18, 2015, 2:25pm

Hello,

yes, I did both. If you quickly read the thread, I already wrote all tests I did...
I did many other tests without communicate.

But.. it makes sense that in USB2Serial, uploading I see RX led blinking?
and not the TX?

I already tried also to reverse TX->RX but nothing.

system · March 18, 2015, 8:14pm

RX should be connected to TX and vice versa.

Hmm... I am a bit stumped.

I use a CH340 connected like this.

system · March 18, 2015, 9:01pm

In your experience.. even you never used Arduino Mini 05, do you see something wrong
in my conncetion? If you have to connect them, do you follow a different schema?
I don't have DTR.. it's the same of RESET in my case?

Can you tell me something about the bootloader?
how to check if it is saved inside my Arduino Mini?

system · March 18, 2015, 10:16pm

Normally a working mini would have the blink stetch loaded so powering it would make the LED blink around once a second.

I presume reset is the same as DTR.

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Arduino Mini 05, I can't upload a sketch

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