Re: #bitx40help Arduino Online Editor (IDE?) #bitx40help


I stumbled across a solution to a similar upload problem with an order or 5 Nanos this week.

This batch of Nanos used the CH340 USB chip and I was certain the USB driver was correct.  (I even checked it out!)

I found there has been a recent change in the Arduino IDE (sometime during March '18) and to program new "old" Nanos you have to select "ATmega328P (OldBootloader)" from the "Tools - Processor:"  Menu.  This uploaded to the new batch of Nanos just like before.

I don't want to confuse things but maybe this will save some head scratching time :-)


In a message dated 3/28/2018 10:57:10 PM Central Standard Time, danjamitch@... writes:

My serial monitor is set for 9600 bps.  And it works -
*Raduino booting up

cal: -1

*Initiliazed Si5351

*Fixed PLL

*Output enabled PLL

*Si5350 ON
... across the same USB cable that doesn't upload.  When I set COM4 for 57600 I get gibbberish.

That says to me that the Nano UART wants to talk at 9600.  I don't see why it would want to use 9600 for the monitor and some other speed for upload.

There's not, perchance, some secret write protect feature in Raduino, is there?


On Wed, Mar 28, 2018 at 8:30 PM, w7hd.rh <w7hd.rh@...> wrote:

In the Sketch editor under Tools (with the board plugged in), you will see a selection called Serial Monitor.  Click on that to see the correct serial port baud rate (57600).  Also, if you look at the nano board during the upload (look between the two boards) you should see TWO red LEDs flashing during the upload, then only one is lit when it completes.

Ron W7HD

On 03/28/2018 08:00 PM, Daniel Crane wrote:
I think you're right, Tim.  It's acting a lot like a serial port with the wrong start/stop/data bits or speed.  The Online Editor has a preferences pane, but it doesn't have anything to say about serial port config.
Wait!!!  I think I've found it.  In Device Manager.

On Wed, Mar 28, 2018 at 7:47 PM, Tim Gorman <tgorman2@...> wrote:
Is your com port set to the same baud rate as the nano?

I don't know what the default baud rate on the nano is but I'll be
someone on here does. I've not used the Online Editor but does it have
an option somewhere for baud rate?

tim ab0wr

On Wed, 28 Mar 2018 18:28:18 -0700
"Daniel Crane" <danjamitch@...> wrote:

> I think I'm almost there.  After loading the CH340/341 driver I can
> see COM4 appear/disappear when I connect and disconnect the USB
> cable.  I've selected Nano board with ATmega328 on COM4.  As I peek
> at the LED's on the Raduino, I can see some flickering of a couple of
> them as the COM tries to sync.
> But after ten retries with error of the form: avrdude:
> stk500_getsync() attempt 10 of 10: not in sync: resp=0x00
> avrdude gives up.
> Searching " avrdude: stk500_getsync() attempt 10 of 10: not in sync:
> resp=0x00" produces voluminous results, but seemingly strange advice.
> Have you seen this?
> I'm running Arduino Online Editor and WIN10
> Thanks/Dan

Ron W7HD - NAQCC#7587 OMISS#9898 KX3#6966 LinuxUser#415320
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