I bought this base to install the Keyestudio UNO development board. I really like the pre-assembled one - it's much nicer than the molded plastic rig that came with my original Arduino starter kit. I haven't had the warped top issues that others have reported and the non-slip feet keep the base from slipping. However, I ran into two problems while setting it up. 1) Keyestudio UNO does not have a mounting hole next to the auxiliary power connector - the problem is easily solved by installing a spacer under the board as a support without screws. The setup looks solid enough. 2) Since the Keyestudio UNO has (many) extra pins and a slightly different component layout, the brass pads will come in contact with circuit parts. I solved this problem by using the nylon spacers I had on hand. (The gasket detailed in step 1 had to be cut to remove the solder bridge.) If nylon gaskets were supplied I would definitely give the base 5 stars. After all that I am very happy with the setup.
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