Ardest Transparent Clear Acrylic Breadboard Holder Base Plate for Arduino UNO R3 Prototyping Platform Terminal Optimizer

Its a nice little board to keep you Arduino and breadboard from being all over the place. At first I could not get the holes to line up either. I was getting ready to get the drill out and it occurred to me, flip it over and check and Voilà. I think the confusion is that the product photo has the Arduino oriented in the other direction.

The manufacturer rotated the four mounting holes 180 degrees. This orients the Uno board with its USB port and barrel jack to the *left* and its *analog* GPIO headers directly above the breadboard (see Photo 1).The industry standard for Raspberry Pi / Arduino / breadboard (RAB) holders orients the Arduino with its USB port and barrel jack to the *right* and its *digital* GPIO headers directly above the breadboard. When I drilled the correct holes to fix the manufacturer's mistake, the acrylic base plate cracked and split into two pieces (see Photo 2). If you must drill acrylic, leave the adhesive masking paper on and be very careful!The seller's product photos on Amazon show the correct orientation, but the actual product that I and other customers received has the incorrect orientation. Customers have been complaining about misaligned holes since April 2020. The seller's photos show how the product should be, but not how the product actually is.I am starting a neighborhood STEM club, and I need products that uphold electronics industry standards. My students and I need to use the same layout for our Uno boards and breadboards in order to communicate effectively. The RAB holder is a teaching tool, which is why the orientation of the mounting holes matters.When I reached out to the seller, I received a speedy and helpful reply. The seller immediately issued a full refund to compensate me for the money and time I lost on a faulty product. The seller also promised to fix the problem as soon as possible and will let me know when the upgraded product is available. There's hope!

On one board the holes matched up with arduino uno the other one two holes where way off so could only use two bolts to hold it without drilling more holes

Great little mount to keep everything in one place and sturdy.

The pre-drilled holes do no line up for the Arduino Uno as stated in the description. A small bit and drill can correct the problem but it is not an "out of box" product.

As previously noted, two holes line up with the PCB and two do not. There is room to drill two extra holes - inconvenient.

Product had pre drilled holes which didn't line up correctly, I drilled in my own to hold it centered. Overall it's okay.

The acrylic is nice sized and holes are drilled in correct place, but the breadboard shown in the picture and listed in the description WAS NOT included.

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