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Re: [RTTY] TinyFSK modem for 45 and 75 baud

To: rtty@contesting.com
Subject: Re: [RTTY] TinyFSK modem for 45 and 75 baud
From: Jim W7RY <w7ry@centurytel.net>
Reply-to: w7ry@centurytel.net
Date: Fri, 11 Oct 2013 04:24:25 -0700
List-post: <rtty@contesting.com">mailto:rtty@contesting.com>
I see what the issue is. The pin out shown on your schematic is not the chip. It's the external interface pins on the board itself. The schematic just shows the pins on the chip, not the interface pins on the edges of the board.

Thanks
73
Jim W7RY

On 10/10/2013 8:15 PM, aflowers@frontiernet.net wrote:
Jim,
Be careful when counting, as there are empty holes on the corners with no pins in them--I think that might be the source of the numbering issue, no matter which one of us didn't count right. I drew that schematic a while ago and who knows what state of mind I was in. The pins are always labeled on the board (Dx = Digital I/O, Ax = analog I/O), and where they are broken out depends on the board layout. The code uses D11 and D13, but of course, you can change them to something else if that fits your plans better. The schematic, such as it is, is just a reference. Meanwhile, I'll inform the editor that I simply won't pay for such shoddy work... Chen wrote:
If you already have the Micro instead of the Nano, and if your OS enumerates 
USB CDC devices as landline serial modems, you might be able to coax your 
software to use an Arduino Micro instead of Arduino Nano.
It shouldn't take any coaxing so long as you have a serial port enumerated in Windows. I prototyped on such a device and didn't have issues. YMMV. Andy K0SM/2
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