Very quicke delivery. The documentation shows a version slightly different from the shipped kit. The kit's silk screen for the LEDs is misleading (but correct on the documentaton): Try an intuitive interpretation of the silk screen and the solder the LED just the other way round. The silk-screened 4K7 resistor has been supplied as a 10k, but this does not seem to impair the function. The suppplied cable is just a bit too short to be useful. After these initial obstcles the logic pen performs as expected.
The kit is mostly clear and easy to assemble. As another reviewer mentioned, the polarity of the LEDs could be clearer. There is a little note about how the silkscreen image has one side smaller than the other to indicate polarity. Changing that marking to stand out better would be nice. However, that pretty much is just a nitpick that stands out because the kit in general is super easy to build and well marked. I've never learned to read resistor color bands, and the instructions even went to the detail of listing out which color bands are for what resistor. Very well done!
I can think of various tweaks that would make it more useful such as being SMT or having a built-in battery but those would go against the point of an easy to assemble kit. It currently fits perfectly into being both a kit to build and a useful tool
I highly recommend this kit. I've often encountered cases where I needed to check a signal on an output pin that isn't connected to an LED. Before this kit it involved hooking up a multi-meter, scope or logic analyzer. None of these provide the nice simplicity of just a LED output. So I think this fits in quite well alongside my tools. The price is excellent too!
There isn't a lot that can be said about the turtle bot that isn't obvious from the pictures and the video on the product description. If you are unsure, watch the video to see it dance. It is a little robot running on two motors with a battery on the back. It is remarkably fast and agile. I haven't tried the IR remote controls but the demo modes on startup have been fun.
I knew as soon as I saw the video I had to have one. It's just a really cool toy robot and I haven't seen anything similar before. It doesn't hurt that it is pretty cute too.
If only I could order a robot-army of turtle bots - muahahaha!!