General > General Technical Chat

Does a hobbyist need a Oscilloscope?

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tggzzz:

--- Quote from: nogood on June 25, 2016, 05:09:26 pm ---I wrote workaround, but I mainly meant those looping out character writes.
You wouldn't necessarily need to do that if you could just look at the output as it appears in a logic analyzer or a dso.

--- End quote ---

I would do it as part of the normal development process; I regard it as the "hello world" of serial interfaces.

Clearly it could also be done with a LA, but I doubt I would bother to get mine out to do it. I would just eyeball the bitstream to see it was plausible.

onesixright:
Need? Probably not (for hobby).  You need food, a roof and some clothes  ;)

Should? I think yes!  It's a amazing tool, that allows you to look at signals in the time domain, and we talk nano seconds. Fascinating!  :popcorn:

You can measure a lot with your multimeter, but a scope makes clear what happens to a signal. At a certain point that's is what you want.

For looking at serial data ( and be able to decode it) you could also consider something like bus pirate (30$).

Gary350z:
If you can afford a scope, get one.

It's one of the most amazing, fun, cool, tools you can have. :)

It will make you happy.

Grab some  :popcorn:  and your scope and have fun!

tggzzz:

--- Quote from: onesixright on June 26, 2016, 07:41:27 am ---For looking at serial data ( and be able to decode it) you could also consider something like bus pirate (30$).

--- End quote ---

Provided that can dump all the decoded information to a host computer's file, that is probably better than an LA.

ez24:

--- Quote from: saturation on October 12, 2010, 03:17:43 pm ---Buying a used scope means you know what to look in potentially damaged or second hand scopes, in which case the buyer must have good knowledge of scope usage and performance.

--- End quote ---

So if the OP knew how to buy a used scope he would know to buy one or not.  I also recommend (as one who did it) not buy an used scope.  Unless the OP has a friend who can look at one and check it out.  The shipping is so high that probably the OP would not want to return it.  In my case the seller refunded my money but I paid the expensive shipping and the scope went into the trash (it was smashed in shipping because of poor packing).  The second analog has bad switches and is waiting for its trip to the dump.

I bought a $60 and a $400 scope and I use the $60 (5 meg) the most because it has a "fun" factor.  I use the $400 one to keep the $60 one honest.

Summary - OP stay away from used scopes


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