Arduino Mega 2560 Pro Breadboard Mount
thingiverse
While this is completely my own design and model, I completely copied and was inspired by qfqfq's Arduino Mega 2560 Pro case (https://www.thingiverse.com/thing:4253336). Mine is made to slot nicely onto a standard breadboard using the dovetail joints molded into most breadboards. I designed this to fit the Arduino Mega 2560 Pro's I purchased from Amazon (https://www.amazon.com/gp/product/B07TGF9VMQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1). It is possible that my mounting peg near the reset button is located slightly different from your Mega. If so, simply chisel off the peg and it still should fit and hold nicely.
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