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Pi 4 And Half Breadboard Prototyping Base
This 145 x 96 mm prototyping base holds a Raspberry Pi 4B/3B+ on four standoffs at its 58 x 49 mm M2.5 hole pattern. The Pi's GPIO edge faces an L-fenced pad, where you stick down any adhesive-backed half breadboard (about 83 x 55 mm). It also has a vented window under the board and a zip-tie anchor block, so a tug on the USB-C or HDMI cable doesn't rip jumpers out of the board.
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