Build your own electronic lego bricks with these high quality prototy PCB's. I have lots of idea's to extend the concept in HF direction (with SMA solder tabs) and versions supporting popular MCU's with basic wiring for power and other basics but breaking out all IO...
These are high-quality ENIG proto boards. The combinations offered allow easy prototyping of various surface mount designs before committing to a PCB prototype run. The extremely low-cost pricing makes it painless to try out multiple circuit designs.
These boards had such a low price I wasn't even totally expecting them to show up. They did show up, quickly, and they're awesome. Great quality and finish, no problems soldering. The stacking / interlocking modular design is ingenious!
I can make as many soldered prototypes as I want now without feeling guilty about the cost of boards.
It would be really cool if the store carried matching sets of headers and M3 hardware as well.