Search found 55 matches

by jmmcg
Fri Jul 03, 2020 4:17 pm
Forum: Assembly instructions for the Cylinder V3 clock kit
Topic: Adding GPS
Replies: 20
Views: 26739

Re: Adding GPS

Another GNSS unit https://www.u-blox.com/en/docs/UBX-13003221 indicates two dp for the time field: 31.2.4 GGA: $GPGGA,092725.00,4717.11399,N,00833.91590,E,1,08,1.01,499.6,M,48.0,M,,*5B 31.2.14 RMC: $GPRMC,083559.00,A,4717.11437,N,00833.91522,E,0.004,77.52,091202,,,A,V*57 Another unit http://www.skyt...
by jmmcg
Wed Jul 01, 2020 3:57 pm
Forum: Assembly instructions for the Cylinder V3 clock kit
Topic: Adding GPS
Replies: 20
Views: 26739

Re: Adding GPS

The GNSS module I have appears to only erratically permit the clock to sync to it. So I had a better look at the messages the SMK53 & BN-2220T produce to see if that might be an effect. XXXsnipXXX Sample NMEA0183 messages from the Beitian BN-220T GPS unit, with a lock: $GNVTG,,T,,M,0.126,N,0.234...
by jmmcg
Tue Jun 30, 2020 1:30 pm
Forum: Assembly instructions for the Cylinder V3 clock kit
Topic: Adding GPS
Replies: 20
Views: 26739

Re: Adding GPS

I have powered up the clock and see the time increment from 15:15. Now I have added the backup capacitor & plugged it in with my GPS device. It all powered up, the GPS took some time to lock (I can clearly see the GPS outputting various NMEA0183 format messages on my laptop). In the mean time th...
by jmmcg
Fri Jun 26, 2020 4:16 pm
Forum: Plasma button of Doooom
Topic: PCB assembly discussion
Replies: 22
Views: 26537

Re: PCB assembly discussion

Yes it can, experimenting with the resistor value to increase or reduce the trigger voltage is required due to the handwound coil and other variations. Have you any suggestions regarding values I should try replacing it with (or would a 1k-10k potentiometer cover the necessary range)? And just to b...
by jmmcg
Thu Jun 25, 2020 5:08 pm
Forum: Plasma button of Doooom
Topic: PCB assembly discussion
Replies: 22
Views: 26537

Re: PCB assembly discussion

Might having an earth strap around the nixie have an impact upon if the relay works? Could it overstimulate the nixie? This would cause the relay to be fired at start-up, yet the capacitor would never get charged, so the relay may not actually fire ever.
by jmmcg
Fri Jun 19, 2020 8:50 pm
Forum: Assembly instructions for the Cylinder V3 clock kit
Topic: PCB assembly discussion
Replies: 4
Views: 8715

Re: PCB assembly discussion

I have wired the boards together and put in L1 . I do not see "00+00" (with the "+" alternating with "-"). What I see is "15+15" with the "+" alternating with "-". The all the amber LEDs flash, the blue LEDs light with a slight flicker.I pr...
by jmmcg
Tue Jun 09, 2020 12:46 pm
Forum: Plasma button of Doooom
Topic: PCB assembly discussion
Replies: 22
Views: 26537

Re: PCB assembly discussion

What is the current draw? that voltage is a little low. I tried measuring it again today and got totally different readings (hhmmmm - me or AVO meter? probably both ;). I now seem to get about 9V without stimulating the nixie (bit high, but may not trigger the relay) and 20V when stimulated; this l...
by jmmcg
Tue Jun 09, 2020 10:23 am
Forum: Plasma button of Doooom
Topic: PCB assembly discussion
Replies: 22
Views: 26537

Re: PCB assembly discussion

What is the current draw? that voltage is a little low. I tried measuring it again today and got totally different readings (hhmmmm - me or AVO meter? probably both ;). I now seem to get about 9V without stimulating the nixie (bit high, but may not trigger the relay) and 20V when stimulated; this l...
by jmmcg
Sun Jun 07, 2020 9:08 pm
Forum: Plasma button of Doooom
Topic: PCB assembly discussion
Replies: 22
Views: 26537

Re: PCB assembly discussion

This is the first of a new batch and I'll update the instructions shortly. 333 is 33n, brown black red is 1k used in place of the 1k2. The relay triggering was too sensitive so the 3k3, which usually required a 5k6 across it, reduced to 2k2. I can send another elay with the USB socket. What is the ...
by jmmcg
Sun Jun 07, 2020 5:23 pm
Forum: Plasma button of Doooom
Topic: PCB assembly discussion
Replies: 22
Views: 26537

Re: PCB assembly discussion

Fit the 3K3 resistor (Orange Orange Red). Fit this in the location marked for R4 as shown: I seem to have a 2k2 resistor for this (red red red gold). Not the 3k3 as noted. I note elsewhere in your instructions that if the relay is not sensitive enough, this value should be increased. I have no 3k3s...