Their build instructions state 242 for a single arm. Lots of contradicting information. Maybe they are betting on insane economies of scale... ๐
Edit: Haha, I think I figured it out. USD 120 are the 3d print parts alone. That's not a false promise at all!
The BOM for the components alone without the print is USD240. Why is the article talking about USD100?
The second connector pin from the bottom is connected to what's almost certainly a ground pour, and this is in line with the through hole labels together with your diagram. This is your black wire.
I would bet money on the rest of the labels (and your diagram) being correct too, so red wire goes to middle connector pin.
If you're fairly certain that blue is in its correct location then we're done: green goes to bottom pin. If you are not, we can take a closer look.
From the top down, that would be
Blue
X
Red
Black
Green
I'm a big fan of Radiohole, especially their song Grape ("I'm a grape, I'm a raisin.")
Does this do/can it be used for keeping track of bicycle maintenance? Mostly which components are used (tires, brake pads,...) and when maintenance was done and so on?
I never designed a speaker. I have been looking for designs a few weeks ago, and there's too much stuff out there and too little to go on if it's actually worth it/better than HiFi speakers I already have. Maybe some day, if I find a good bookshelf speaker project that seems achievable.
Awesome, thanks for the reply. I've been curious about printing speakers myself, but it seems like a daunting task.
I mean there are robot arms for a lot more than that, but that's not the point. It's like saying a Parol 6 costs 5 bucks, but it's actually the price of the mounting screws.