Amateur radio, programming, electronics and other musings

All posts in Trimble Thunderbolt Monitor

I’ve decided the best way to manage this project to to supply everything you need to create your own solution (pcb etc) or provide a kit of bits for you to build yourself.  That way I always know you at least have the right bits.  It’s just not worth the effort providing just the PCB at this point.  I’ll post a high resolution photo so you will know how to place the bits.

I will also be able to supply fully built versions for a small surcharge to cover my time.  All you need to decide is if you wish to have the LEDs and buttons populated as you might wish to use panel mounted buttons and LEDs.

I’ll post again when all the bits have arrived, I’ve properly costed it and have a working example.

Stay tuned.

It’s been a little while since I posted last but it doesn’t mean I’ve not been actively working on the project.  I have drawn out the schematic and PCB using Eagle and will be releasing the files to github ( with the first version of the source code.

I must stress that these have yet to be checked thoroughly so if you fancy double checking it for me I would appreciate.   I plan to get a run of PCBs made in the coming days.

Read more

What is NTP?

Categories: Projects, Trimble Thunderbolt Monitor
Comments Off on What is NTP?

Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks developed back in 1985.

NTP provides Coordinated Universal Time (UTC) including scheduled leap second adjustments. No information about time zones or daylight saving time is transmitted; this information is outside its scope and must be obtained separately.

It is usually able to maintain time to within tens of milliseconds over the public Internet and can achieve 1 millisecond accuracy on local area networks under ideal conditions.

The current reference implementation is version 4 (NTPv4), which is a proposed standard as documented in RFC 5905. It succeeds version 3, specified in RFC 1305.

Read more

Netduino Plus 2

Categories: Trimble Thunderbolt Monitor
Comments Off on Netduino Plus 2

Last week I purchased the updated Netduino Plus 2 from Secret Labs.  This version has a network port on it which I have been playing with. It’s given me the nudge I needed to continue with the Trimble Monitor. I have been testing out code to act as a web server and I am currently looking at the spec for NTP (RFC1305). Read more