Nice looking board, but I agree, you should charge more. One market to consider is automotive scopes- since it already can interface with a phone, putting different connectors on there and with a case would suffice for most uses. Compare to a Pico scope for the market leader in this segment. It definitely doesn't need to be a 100% finished consumer product (that's already covered), you wouldn't be selling to hackers but the mechanics who use a scope are by and large the technically sophisticated ones. Just a thought, it looks like a great product, I'm buying one just to hack into a portable scope so I don't have to deal with getting out my rigol for basic auto work.

Edit: it certainly doesn't need to be battery powered either, conveniently cars have 12v battery power avaliable (although it is quite dirty, so input protection is required). I'm on my phone RN, otherwise I'd pull up the schematics, it might already have adequate input protection.

This is a little off-topic, but since we're already on this: I just wanted to say "great job" on the Labrador. I don't even need one (I have benchtop scope, power supply, signal generator, logic analyzer, etc. already, and a couple of Bus Pirates) but couldn't resist ordering one just to acknowledge the awesomeness of your work.

Bought! Too cheap though...double, or even triple the price.

Sold! And, yes, you should charge more. Twice the price, and it still would have been an impulse buy for me.

Hi, does your scope have a ground that is isolated from USB ground? This would be a very useful feature.

Bought two(2) because a friend wanted one too!

10% discount if you buy in bulk? I'm getting my friends some too. :-)

Another shilling opportunity!? Sure, why not? https://espotek.com/labrador/