Op Kit - Learn analog electronics with a pencil!

The Op Kit is an analog computer that you program with a pencil! You use Op Kit to learn analog electronics by connecting the built-in operational amplifiers (op amps) with pencil traces to create real working circuits. The first picture shows how the Op Kit PCB has both a special solder mask and a special silkscreen. Our original PCBWay order included the manufacturing note, "Silk screen labels *must* appear on *both* the naked FR4 area and on the solder mask area". During the review, the PCBWay Service Team emailed to confirm both the solder mask and the silkscreen. The first production arrived very quickly. However, it was missing the silkscreen from the bare material. When I pointed out the mistake, the PCBWay Service Team corrected the problem right away with a second production of the PCB. They used a special process to achieve the required solder mask and silkscreen. The second production also arrived very quickly, and was completely correct. Overall, PCBWay performed very well and communicated quickly to correct the problem. The online process and shipment tracking is very helpful. We will definitely order from PCBWay in the future! http://opencircuit.co http://wiki.opencircuit.co