Mechanical keyboards have risen in popularity within the gaming community, coding community, and among typists seeking a more tactile experience. Notably, part of the appeal lies in the ability to customize these keyboards to user preferences. The central core of a mechanical keyboard is its Printed Circuit Board (PCB). PCB installation is a crucial part of building a mechanical keyboard as it directly impacts the keyboard’s functionality and performance. This article will provide valuable tips and advice on how to uncomplicate your mechanical keyboard PCB installation.
Firstly, it is essential to carefully select the right PCB. Two main factors contribute to this: Compatibility and size. Compatibility refers to whether the PCB can support your desired switch and key layout. Analyze the PCB’s key layout footprint, which outlines which keys can be placed where to choose accordingly. Size, on the other hand, is mainly based on personal preference. Smaller sized keyboards (60%-65%) are portable but may limit key options, while larger sizes (Full-sized, 75%, or Tenkeyless) provide a full range of keys but are less portable.
When purchasing a PCB, choose one that supports your desired firmware. Firmware is a software installed on the PCB that allows you to customize your key mappings, layers, macros, and RGB lighting. Two popular firmware options are QMK and VIA. QMK is more complex but provides depth in customization. In contrast, VIA is beginner-friendly but may not support all the features found in QMK.
Another critical point is to ensure your PCB comes with a mini-USB or USB-C connector. The USB-C connector is preferred because it’s reversible (can be plugged in either way), provides faster data transfer, and can deliver more power.
Once the right PCB is purchased, we move on to physical installation steps. Firstly, ensure to handle your PCB gently as it is fragile. Incorrectly bending or placing too much pressure can damage it. Use a static wrist strap when handling your PCB to prevent possible damage from Electrostatic Discharge (ESD).
Before soldering, it’s advisable to ‘dry fit’ your switches onto the PCB. Dry fitting is where you insert your switches into the keyboard plate and then fit the plate and switch assembly into the PCB, without soldering. This helps to verify everything fits correctly before any permanent connections are made.
Soldering is the next major step. Ensuring a good solder joint is important for keyboard longevity and performance. The most effective soldering technique is ‘through-hole soldering.’ This is where you place a mechanical switch through the PCB’s switch hole. A good solder joint should be shiny and have a volcano shape. It’s attributed to good heat transfer, which means the right temperature was used.
During this process, another important tip is to avoid leaving your soldering iron on the PCB for too long as this can cause damage. Also, ensure you have adequate ventilation as soldering can produce harmful fumes.
After soldering your switches onto the PCB, you should test each switch before assembling the rest of the keyboard. You can use a simple app like VIA or QMK Toolbox to test this. This step is crucial to identify and rectify any non-functioning switches early.
Cable management is another crucial factor. Typically, the cables connect to the top right or left of PCBs. Carefully plan in advance how your wires route inside your case for a clean look and easy assembly.
Realize that mechanical keyboard PCB installation is largely a trial and error process, especially for beginners. Be patient, and don’t rush the process. Take the time to learn from your mistakes for future builds.
Remember, part of building a keyboard is learning more about the mechanics behind it. So, even if your first attempt isn’t perfect, stay patient, and keep learning. In the end, practice and patience will lead you to the perfect mechanical keyboard, tailored just for you.
