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Assemble RPI5 3H Board Stack

These instructions show how to assemble a stack of RPI5 boards for your PicoCluster. These photos show how to assemble a 3 board stack.

Please contact support@picocluster.com if you encounter any difficulties.

Step 1 – Prepare the Boards

Open the packages and apply the heat sinks as shown. Each heat sink has a peel-off backing allowing it to stick to the chips.

Step 2 – Assemble the Board Stack

Start with the 1/2" F/F standoffs on the bottom and the 1" M/F standoffs on the top as shown. Once screwed together, then tighten slightly. The standoffs only need to be snug, not wrenched tight together.

Continue to add boards to the stack using the 1" M/F standoffs as shown.

Step 3 – Mount the PDU

Attach the PDU to the top of the stack using the 3/8" screws as shown.

Step 4 – Connect the Power Cables

Connect each power cable to each PI as shown. The RPI4 uses USB-A to USB-C cables.There is one 5.5mm DC Power cable to power the switch.

Plug each power cable into the PDU on top as shown. The cables can be tied to the standoff with a cable tie as shown.

Attach the 5.5mm DC power cable to the screw terminals as shown. Red [+] goes to the right terminal. Black [-] goes to the center terminal.

Next Steps – Assemble Your Cube

Move on the the assembly instructions for your particular cluster cube. The Pico 10H requires 2 board stacks and the Pico 20H requires 4 board stacks.


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