please recommend: logic analyzer and oscilloscope for simple projects (Arduino)

[YigalB]

I need logic analyzer and oscilloscope for simple projects, mostly Arduino.

I prefer USB devices to save desk space, and for mobility.
For example, Hantek 6022BL, because it has them both - even if not at same time.
Do you think it will be good enough?
I am concerned about the software, and capabilities like triggering and bus analysts.

Thank you
Yigal

[ebastler]

There's a good discussion on the same question in a recent thread here: www.eevblog.com/forum/testgear/dpscope/. The tendency in that discussion is: If you can find the space at all, go for a proper benchtop scope; specifically the DS1054Z from Rigol is great value for money (and it is smaller than one might think). But also some recommendations on USB scopes in the thread.

[zapta]

For logic analyzer look for Saleae or one of their 8 channel clones on eBay.

[Muxr]

A USB scope is not a substitute for a real scope. The biggest reason you want a scope is to see things that are hard to measure with other means. This is why both the UI and the specs are important. Real scopes win hands down in both. Also USB scopes depend on your computer speed as well, and they are pretty clunky and can crash etc... Not something you want out of an instrument you want to trust to give you the details of a problem you're looking at.

You need that confidence that what you're seeing is real and you really only get that with a real dedicated scope imo.

Entry level scopes are really not that expensive. $399 for a great Rigol DS1054Z.

If you're really strapped for cash, you can get an Analog scope from Ebay.

Logic Analysers, I agree with the previous poster. Saelee or one of the cheap clones.

[0xdeadbeef]

A good logic/protocol analyzer and a scope have quite different use cases and depending on what you want to do with it, one is much more helpful than the other.
If you're doing mostly digital stuff and want to investigate why a certain protocol is not working, a logic analyzer is so much more helpful than a scope - even if the scope has a protocol decode option.
Then again, if you want to investigate the real physical signal regarding noise, slow edges and every other analog attribute, a scope is your only option.
Besides a scope gives faster updates and is your number one choice to quickly check signals or measure a simple PWM even though this would be possible with a logic analyzer.
In the end you need both.
BTW: as usual, I vote for the Ikalogic ScanaPlus as Logic Analyzer. Just again, it was incredibly helpful to debug issues with a 10MHz SPI controlled display.