Re: <tap> <tap> is this thing on? Hello APRS!


Dan Pflugrath
 

If I put everything together with my Arduino UNO, load the firmware and WinLink will you assist myself and anyone else to make sure it works. It looks easy but there are some issues to making it work like loading the hex file, getting WinLink loaded and making adjustments to the audio levels. Help me and I am willing to help other club members doing the same.

I see where the same group, mobilinkd, has set up their TNC to link to Android by Bluetooth which could be very useful in the future.

Thanks again,
Dan KA7GPP

-----Original Message-----
From: snovarc@groups.io [mailto:snovarc@groups.io] On Behalf Of Shawn / K7ATA
Sent: Monday, June 24, 2019 9:15 PM
To: snovarc@groups.io
Subject: Re: [snovarc] <tap> <tap> is this thing on? Hello APRS!

Yes indeed, tied to the PC via USB, and it works perfectly with winlink.

--Shawn
--K7ATA

On 6/24/2019 9:09 PM, Dan Pflugrath wrote:
Shawn,
Nice work. Simple is beautiful.

I am a bit slow at this but do you then hook up the Arduino to your computer app by the USB port? I am assuming you could use this to run WinLink.

Thanks
Dan KA7GPP





-----Original Message-----
From: snovarc@groups.io [mailto:snovarc@groups.io] On Behalf Of Shawn / K7ATA
Sent: Monday, June 24, 2019 3:29 PM
To: snovarc@groups.io
Subject: Re: [snovarc] <tap> <tap> is this thing on? Hello APRS!

Simplicity itself; Simple schematic and protoboard view:
https://imgur.com/a/dkUQ03J

NPN is a 2n2222 or equivalent, arduino requires a firmware flashed onto
it with AVRdude


Firmware:
https://raw.githubusercontent.com/mobilinkd/tnc1/arduino/images/mobilinkd-473-arduino.hex


This is all based on the moblinkd design, and if you're a glutton for
punishment, I have a BOM for SMT build and the boards can be had from
oshpark: https://oshpark.com/shared_projects/rY0zpRke (yes, everything
fits UNDER an arduino nano)


--Shawn
--K7ATA

On 6/24/2019 2:50 PM, Ryan - KJ7GIE wrote:
its pretty easy to build a TNC for aprs with an arduino; I've done a
few. Average cost was ~$15 as one-off prototypes.
--Shawn
Mr. Shawn Sir,
Can you please post the BOM and design you use for your Arduino TNC? I'd be interested in putting one of these together. Thank you.






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