PLJ-8LED-H RF Signal Frequency Counter Cymometer Tester Module

Thread Starter

Wendy

Joined Mar 24, 2008
23,052
I bought one of these from Amazon. And when I could not get it to apparently power up I returned it and got a replacement. Same thing. So assuming this is actually a good device, any suggestions? They are nifty enough I may buy a second one just to turn it into a full time frequency counter.

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at just over $20 the price cannot be beat if they work that is.
 
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Thread Starter

Wendy

Joined Mar 24, 2008
23,052
Thanks, I had the wrong cable on the power supply. I would have never figured that out by myself. Looks like it's going to be a fairly usable module.
 
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Thread Starter

Wendy

Joined Mar 24, 2008
23,052
Amazon is usually not the cheapest, but they are almost always the fastest. Not to mention their easy return policy. I am in the process of designing a 3D printed box to make a simple frequency counter out of it. It will probably use a 9 Volt battery ( rechargeable lithium). The one thing I got from those YouTube videos is it this thing is a major current hog.
 
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