Prerequisites
- Home Assistant Yellow with Compute Module installed, powered off
- Flat nose pliers
Notice
Risk of damage to equipment
- Only use the screws that came in the bag labelled CM5.
- If you're box did not contain a bag with screws for the CM5, don't use any screws to fix the module in place
- The other screws can damage the CM5 module.
Opening the case
Step 1
Protecting from ESD
Notice
Risk of damage to the equipment due to electrostatic discharge.
Grounding protects the components from the static electricity that can be naturally present (electrostatic discharge, ESD).
- Always: Touch the working surface before touching electronics.
- Ideally: Use ESD protective equipment, such as ESD table mats and grounding cords.
Step 2
Removing the case - bottom part:
- Remove the 4 screws on the bottom of the Home Assistant Yellow Kit.
- Keep the thumb screws close by; you will need them again later.
Step 3
Removing the case - top part.
- Make sure the interfaces are facing towards your left.
- Flip the case over.
- Slightly lift off the enclosure on your left.
- Slide the enclosure off towards your right.
Removing the Raspberry Pi Compute Module 5
Step 1
Removing the heat sink
- Use the pliers and squeeze the front of the pin so that it fits through the hole.
- Repeat the procedure for the other pin.
Step 2
Removing the Raspberry Pi Compute Module.
Notice
- Do not use a screwdriver as a lever. It might damage the board.
Notice
Tilting can damage the connector
-
To avoid damage to the module, ideally, the module should be pulled up vertically. But this is hard to do.
-
Pull up the module from one side, tilting as little as possible. Tilting can damage the connector.
-
This requires quite a bit of force. If it does not work, pull harder.
- Remove the Raspberry Pi Compute Module.
- The image shows a Raspberry Pi Compute Module 4. The steps are the same for the Compute Module 5.
Re-seating the Raspberry Pi Compute Module 5
Notice
Risk of damage to equipment
- Only use the screws that came in the bag labelled CM5.
- If you're box did not contain a bag with screws for the CM5, don't use any screws to fix the module in place
- The other screws can damage the CM5 module.
Step 1
Aligning the CM5
- Place the board in front of you, the connectors facing to the right.
- Orient the CM5: the Raspberry Pi text needs to be on the right hand side.
- Carefully place the CM5 without force.
- The CM5 should fall into place slightly when correctly aligned.
Step 2
Installing the CM5
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Press the CM5 board onto the board-to-board connectors until it clicks into place.
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Make sure you press on both sides (the two long edges).
- This requires quite a bit of force.
- If you don't hear a loud click, it is most likely not fully seated.
- Note: It has been reported that on some boards, there is no click sound when pressing the module onto the board. It can still be seated correctly.
-
Do a visual check to make sure the CM5 is installed correctly.
- It needs to run parallel to the Home Assistant Yellow board.
- You can also pull a bit on the sides to make sure it is not loose.
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Step 3
Placing the heat pads
- If your Yellow came with a plastic bag labelled CM5, containing screws and heat pads, place those heat pads on the CM5.
- Align the pads as shown in the image.
- Make sure that the pad with the cut off corner is placed so that there is room for the screw.
Step 4
Optional: Adding screws
Notice
Risk of damage to equipment
- Only use the screws that came in the bag labelled CM5.
- If you're box did not contain a bag with screws for the CM5, don't use any screws to fix the module in place
- The other screws can damage the CM5 module.
- If the packaging included a plastic bag labelled CM5 with screws and heat pads, you have the option to screw the CM5 module in place.
- Screws are optional and can help keep the Compute Module in place during transportation.
- Use a No 1 crosshead screwdriver.
- Be careful not to overtighten the screws.
Step 5
Placing the heat sink
- Push the 2 plastic push pins into the dedicated hole on the heat sink.
- Start by first aligning the right plastic push pins into the dedicated hole on the carrier board.
- Then, place the heat sink onto the module.
Step 6
Securing the heat sink
- Take the entire board off your workplace and push the pins firmly through the carrier board.
- Ensure that the module is still fully seated after securing the heat sink.
Reassembling your Home Assistant Yellow
Step 1
Preparation
- Place the translucent bottom part of the case onto the table.
- Make sure the two round notches form a line pointing towards the top right corner.
Step 2
Reassembling - bottom part
- Place the board onto the bottom part of the case.
- Make sure the USB connectors are facing upwards, away from you.
Step 3
Reassembling - top part
- Turn the enclosure upside down.
- Then, slide the push buttons into the openings of the case.
Step 4
Mounting the case
Notice
Risk of damage to the equipment due to excessive force
- Do not over-tighten the screws.
- Insert the 4 thumb screws.