[time-nuts] TruePosition on an Arduino

Ben Hall kd5byb at gmail.com
Sat May 13 20:20:42 EDT 2017

Hi Jim and list,

On 5/13/2017 5:19 PM, Jim Harman wrote:
> I have done quite a lot of time-related work on the Arduino and here are
> some suggestions:
> -- Use the Arduino Leonardo or Micro board rather than the Uno. These use
> the 32u4 processor rather than the Uno's 328p. The 32u4 has integrated USB

I will look more into this...the Micro is very interesting as being a 
module rather than a board like the Uno, it would be more cost-effective 
to build the Micro into a project versus the Uno.

I assume that the USB programming port is also the serial.print output 
port to the serial monitor window?  That seems to be the case, as the 
technical description says:

"Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL 
serial data using theATmega32U4 hardware serial capability. Note that on 
the Leonardo, the Serial class refers to USB (CDC) communication; for 
TTL serial on pins 0 and 1, use the Serial1 class."

> -- For NMEA communication, use Mikal Hart's TinyGPS++ library, available at
> http://arduiniana.org/libraries/tinygpsplus/

Thank you for the link to this library.  The TruePosition units use 
their own communication method rather than NMEA, but the ability to 
convert GPS seconds into date/time is very interesting and I will look 
into this more.  :)

thanks much,

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