[time-nuts] TruePosition on the Arduino

Tom Miller tmiller11147 at verizon.net
Tue Jun 20 21:02:29 EDT 2017

Has anyone been able to get the Packrat software to work with a display? I 
have been successful getting the Arduino board to initialize the 
Trueposition board but can't get the display right.

The problem seems to be getting the I2C addressing correct. There are 
several 16x2 line displays available but they address at 0x20 to 0x27 and 
0x38 to 0x3F. Neither of these work.

Since we do not have the source, is there any way to find out what address 
is in use?


----- Original Message ----- 
From: "Gregory Beat" <w9gb at icloud.com>
To: <time-nuts at febo.com>
Sent: Tuesday, June 06, 2017 8:44 PM
Subject: Re: [time-nuts] TruePosition on the Arduino

> Ben -
> I assume that you never received the Arduino "C code"
> written by Bruce, WA3YUE for the original project?
> Club's Powerpoint presentation indicated that source code was available.
> http://www.packratvhf.com/techinal.htm
> Packrat GPS Project (Gary, WA2OMY; Bruce, WA3YUE; George, KA3WXV) with 
> TruePosition GPSDO and Arduino
> by The Mt. Airy VHF Radio Club "Pack Rats" (Southampton, PA).
> http://www.qsl.net/wa2omy/A%20Packrat%20GPS%20Receiver%20Project.pdf
> greg, w9gb
> ==
>> original message / digest <
> I'm getting to the point that once I've got the button logic working, I'll 
> send out my source to anyone who wants to take a look at it or use it.
> I will stipulate one condition - you can't make too much fun of how poorly 
> programmed it is.  ;)
> thanks much and 73,
> ben, kd5byb
> ==
> Sent from iPad Air
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