Very handy when you want to get a better understanding of AVR micros and you aren't too much into electronics. It has very basic and useful components like leds push buttons and a speaker already connected and ready to use. Used it to test my Arduino programs while doing a MOOC and it helped me saved some time instead of having to do the circuitry on a breadboard. So thanks!
Great tool, works as described, amazingly low footprint (both physically and code size wise) Wish it had come with a grove wire connector, as I am not using it with grove products. Otherwise, works as described, support is good; well worth it. It does require some pre-planning on how you're going to use it get debug info, but it is worth the effort.
I didn't 'get it' at first, what good is showing 4 digits... but actually, you can cram a lot of info if you plan it well, about where you are, variable values, etc. The additional code (byte size wise) is small enough to leave in, which makes 'in the field' debugging a little easier, just attach it and you get your info. This is my 2nd JDN product; they are great quality, but more important to a hobbyist is that he's there for you after the sale to help you if you have problems/questions. Super fast delivery (to US, only took, what seems like, less than a week); well packaged. Very responsive to email queries. If I had a complaint, (which I don't, as I gave 5 starts for documentation) is that the documentation seems to all be in PDF's; so translating from French to English is an additional step - - but he has a wealth of information available in the documents. If you do bench top work; I think the lower cost (bigger display) is the way to go; but if you do field work, or think you might want to leave it connected for extended periods, I would get the smaller version, less to hang up on wires, fat fingers, etc).
Quality build, Great stuff & well worth the price.
This is a fast easy build and it works just as advertised. It's well designed, with a nice PCB and all parts needed. I used a little longer wires for the power. It has a nice breakout (3 male header pins) in case you want to use some other wire/probe. the logic probe is small and easily fits in a shirt pocket, a bit of kit you can always have with you. The led's are bright and well placed. Communication/support is awesome.
Well worth it.