Instrument Basics: Logic Probe - Workbench Wednesdays

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I have a handy, related tool you may or may not have seen. It's a logic chip probe from HP that has a 14 pin clip (designed to clip onto 100 mil pitch SOIC and DIP logic parts (7400 series) and provides a red/green LED output right on the clip for each pin. I suspect HP and others may still make them and not sure of the cost, but it beats probing logic pin by pin. If you don't have one or haven't seen one, drop me a reply and I'll try to provide a pic or two (and maybe a short vid if you like). With my DSO w 16bit wide logic inputs, I haven't used them (a 14 pin & a 20 pin, I think) in quite awhile, but they're still in my arsenal. Don't even recall where I picked them up. Great content BTW!

scottdebruyn
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"The LED above my head came on" :D

funkykong
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What DMM are you using in this video? I’m looking for a new one & love the idea it tests components as well

richardpoll
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Presumably you've shown how easy it is to build one ... and then start stacking on features.

toddmarshall
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Are those Probe Master leads @3:00 ? Super nice quality...

OldSkoolF
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you can build one with a cd4049, two leds and three resistors

estebanvillalobos
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so...I have a very nice Rigol scope..(that 5 years later I still don't totally understand all the functions lol), but I actually use my logic probe and logic pulsar combo a LOT more....

michaelmounts
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Do you have a probe that you would recommend?

RandomTorok
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Damn, fps... I'll get you next time!!!!

grahampawar
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Is this supposed to be for beginners?🤨

ClbnaVGM
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I just don’t get it” maybe if I subscribe I will get it.

jtphfsw
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If you step out of your discomfort zone, wouldn't you be in your comfort zone? ;)

Bearcade
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Complete NOOB here. Are the 74hct04 chips, C-MOSs or TTLs. Please reply, I'm trying to learn. Cheers

maxwarfield
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I Watched this and still didnt understand :(

johndolman
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How to use a logic probe: First, grab a $2200 DSO....

hangfire
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Now, imagine if someone would invent a logic probe with a buzzer as well as a display showing frequency or low DC voltage instead of dinky car repair stuff. It would actually be a tool for electronics repair.

ScoopexUs