N00b - Pro mini 328p (clone?) not in sync

Development Tools IDE 1.x
1

Hello all,
i'm a complete noob on arduinos, but quite good on raspberry

Now, i couldn't resist a ebay offer for an "arduino pro mini 328 compatible" (i had to look for the "compatible" lol), so i got one of these

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i soldered headers, installed arduino ide, took my usb2serial adapter (with no reset pin.. a pl2303hx) and tried to flash the easiest sketch.

The "small thing" is flashing a green led every second, so i'm assuming a bootloader is ok on it.

  1. tried on my windows laptop.

got 10 tries of "programmer is not responding", "not in sync" and a random hex resp.

  1. tried with one of my raspberries.

got 10 tries of "programmer is not responding", "not in sync" and a random hex resp.

I tried with any reset button press i could think about. Short, long, now, then, in the middle, everything :slight_smile:

now, what can i do? :slight_smile:

(i fear you'll say "write the bootloader".. i don't think i can do that with only a usb2serial adapter, right?)

Thanks :slight_smile:

2

"with no reset pin"
You'll need to press reset on the promini to kick off the bootloader.
In the IDE, select File:Preferences and enable Verbose Outputs.
Start the download - when you see "Compiled xxx of 32xxx bytes" press reset. May take a couple tries to get the timing right.

3

Hello CrossRoads,
i already tried all of these, sadly..

but

just to leave nothing to luck, i tried using the TXD and RXD not on the front header, but on the side one

AND IT WORKED

this is so stupid.. but i'm ok with this :slight_smile:

sorry for wasting your time..

4

Buzz them out, see if they're connected. If not, that's a design flaw.