Raspberry Pi 3 B+ and New 4 is your credit card sized computer that needs to be put in a sort of case. We are talking about plastic layers. It's like a jigsaw puzzle. There are few instructions for assembling the case, except for the general scheme of the finished case. The screws are long enough to go through the case. You will need some sort of metric wrench to tighten the nut onto the bolt. A 3 B+ fan can be placed on the outside of the case, and 4 must be inside over the processor to cool the machine. It's getting pretty hot. Overall, I rate this set better than the average set.
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