Connecting a switch to a PCB (Printed Circuit Board) typically involves inserting the switch's pins into either a hotswap socket or soldering them directly to the PCB.
Here's a breakdown of the two main methods:
1. Using Hotswap Sockets
Hotswap sockets allow you to easily insert and remove switches without soldering. This is a popular method for custom mechanical keyboards.
- Preparation: Ensure the switch's pins are straight to facilitate smooth insertion.
- Insertion: Carefully insert the switch pins through the switch plate (if applicable) and into the hotswap socket on the PCB.
- Support: While inserting, support the bottom of the socket with your thumb to prevent it from being pushed out of place.
- Verification: Ensure the switch sits flush against the switch plate (if applicable) and is securely seated in the socket.
2. Soldering Directly to the PCB
Soldering provides a permanent and reliable connection between the switch and the PCB.
- Preparation: Clean the switch pins and PCB pads to ensure good solder adhesion. Apply flux to the PCB pads.
- Placement: Insert the switch pins into the corresponding holes on the PCB.
- Soldering: Heat the PCB pad and switch pin simultaneously with a soldering iron, and then apply solder. Ensure the solder flows evenly around the pin and pad.
- Inspection: Inspect each solder joint to ensure it's shiny and free of cold solder joints (dull or cracked).
- Cleanup: Clip any excess switch pin length and clean any residual flux from the PCB.
Key Considerations:
- Switch Type: Different switches have different pin configurations (e.g., MX-style, Choc switches). Ensure compatibility with your PCB and hotswap sockets (if applicable).
- PCB Design: The PCB needs to be designed with the appropriate holes or hotswap sockets for the intended switches.
- Soldering Skills: Soldering requires some practice and skill to create reliable connections. If you're new to soldering, practice on a scrap board first.
- Hotswap Socket Quality: Use high-quality hotswap sockets to ensure a secure and durable connection.
