A smart holder for your Arduino MEGA2560.
Easy to assemble, just push the three hinge/bracket in thier holes in an open position, and then fold them down to lock them in place. 6 washers are used to hold the card in place with a small self tapping screw approximately ~1,2 mm in diameter. I use exactly these screws: PIKO A 55298
An Arduino UNO holder is also available here: Arduino UNO Compatible Holder
If you only need the model and like to print it yourself, you can get the model here: 3D file