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Billthetoolman 15/11/2017

I must be doing something completely wrong building these units. 2 out of 15 that I built so far do not work currently. They do turn on. The vibrating motor doesn’t vibrate. The number 5 is the only pattern provide by the LEDs. I’m an expert soldering technicians, so ever solder joint is good. All the components are positioned in correctly. No solder shorts. The CR2032 batteries are new. The second one that I assembled, I placed the chip in a IC socket to find out where the problem could be. Thinking of taking the chips from the other kits and test them.

Kommentar (1)

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Billthetoolman Sorry, folks. I figured what I was doing wrong and would to explain in case someone else has ran into this problem as I did. The batteries that I thought were good, were not. These batteries were still in the original package, I assumed they would be good. I connected the assembly to a power supply and adjusted the output to 6 volt with a maximum current of 150ma. To my surprise it worked perfectly. I did notice that when the vibrator was active the current draw is 120ma. New batteries
Antwort 16/11/2017

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