[GADParticipant]

Note also that (at least on my clock) when you first power on the clock with the GPS enabled that it will show GMT time until the GPS syncs at which point the time zone is applied. I find this to be a bit clunky, but I didn’t write the code.

[GADParticipant]

I know this is an old thread, but I was having a similar issue with my Arduino Mega GRA&AFCH clock and so I looked at the code. The code sets the sync interval to 30 minutes, and I’ve seen the clock not change after I set the time zone for a long period of time – presumably because of this. If you set the time zone and it appears to have no effect, let the clock sit for up to 1/2 hour and it should change.

Additionally, according to the instructions, “negative” time zones are shown by illuminating the dots in the tubes. Well, my tubes don’t have dots so there’s some ambiguity about what’s being shown. In other words 05 and -05 appear to be the same on my clock with Millclock ZIN-70 tubes in a Z568M clock.

To answer the original question, my clock shows the right time for EST with the time zone displayed as 05. This is clearly -05 but there is no visual indication of this being negative. For EDT that number should be 04. If the time is wrong with 04 or 05 displayed, cycle through the numbers until you get to 04 or 05 again and this should be the negative version.

Hope that helps someone.

[GADParticipant]

Here’s how I solved this:

I took a pin socket and snipped it where it would normally meet the top of the board:

I then pit it on a tube in order to position it:

I then soldered that onto the top of the board using a very fine iron tip:

I’m not super thrilled that I needed to do this, but it seems to work, and so long as you’re not constantly pulling the tube in and out, it should last forever.

[GADParticipant]

Before anyone comments, I’ve already resoldered R812. 🙂

[GADParticipant]

Found it! Bad solder joint on R16. Reflowed and all is well.

[Author]

Posts