Search found 4 matches

by vtluu
Thu May 02, 2013 5:55 pm
Forum: Assembly instructions for the Thinkgeek nixie thermometer
Topic: PCB assembly discussion
Replies: 32
Views: 96511

Re: PCB assembly discussion

Have a look in the 'troubleshooting' thread for the PCB layout. Could you check the voltage across the LEDs and at pin 14 of the PIC. There's very little to go wrong in hardware that can prevent the LEDs working. The PIC can hang before that stage though if it doesn't receive a signal from the sens...
by vtluu
Wed Apr 24, 2013 10:22 pm
Forum: Assembly instructions for the Thinkgeek nixie thermometer
Topic: PCB assembly discussion
Replies: 32
Views: 96511

Re: PCB assembly discussion

Thanks for the quick reply Tony. I didn't have my multimeter with me at the time so I couldn't measure current or anything, only visually inspect everything. Unfortunately I won't have time to pick up this project again until Saturday... But when I do, I'll check everything you mentioned and report ...
by vtluu
Wed Apr 24, 2013 9:24 pm
Forum: Assembly instructions for the Thinkgeek nixie thermometer
Topic: PCB assembly discussion
Replies: 32
Views: 96511

Re: PCB assembly discussion

I've managed to get up to first "power it on stage" but am not seeing any light from any LED (which one is supposed to light up?). Unfortunately, my MM doesn't do mA (just amps), but I get a flat 0.0 across R28 when plugged in. I've run across the board testing everything I can think of, ...
by vtluu
Wed Apr 24, 2013 9:17 pm
Forum: Assembly instructions for the Thinkgeek nixie thermometer
Topic: PCB assembly discussion
Replies: 32
Views: 96511

Re: PCB assembly discussion

I received my kit today and started assembling it, but then got to the LED step and ran into a problem. 1 of the 5 LEDs has the flat side on the opposite side from the rest. Suggestions? I went ahead and mirrored the anode/cathode layout of the other 4 for this one, but please let me know if one wa...