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This is a case for the DM DIYMORE arduino clone. Some arduino models may be slightly different in size and location of connectors.
There is plenty of room inside the case for wires and other small items. Use small self-tapping screws for the arduino and the lid.
4 markings are made for cable drill holes so they can be in the same place if you make multiple cases for a project.
The mounting flaps are 40 mm wide and fit M5 Allen bolt. I use this case for my 4040 profile robot. PLEASE BE CAREFUL TO MAKE A MAKE IF YOU STOCK THIS.