Standard Layouts: Consider popular layouts like QWERTY, AZERTY, or Dvorak.
Custom Layouts: If you have specific preferences, you can create a custom layout using software like QMK or VIA.

2. Select Key Switches

Tactile Switches: Look for switches like Cherry MX Brown, Gateron Brown, or Kailh Box Brown that provide tactile feedback.
Switch Type: Decide on the feel of the switch (linear, tactile, or clicky) based on your preference.

3. Design the Keyboard Case

Material: Choose between plastic, aluminum, or wood based on aesthetics and durability.
3D Printing: If you want a unique design, consider 3D printing your case.

4. PCB and Electronics

PCB Options: Purchase a pre-made PCB or design your own if you have the skills.
Microcontroller: Common options include ATmega32U4 (e.g., Arduino Pro Micro) for easy programming.

5. Keycaps

Material: Choose from ABS or PBT keycaps.
Profile: Select a keycap profile (SA, DSA, Cherry, etc.) that matches your typing style.

6. Assembly

Soldering: If using a PCB that requires it, solder the switches onto the PCB.
Mounting: Install the PCB into the case and secure it.

7. Firmware

Programming: Use QMK or similar firmware to customize key functions and macros.
Testing: Ensure all keys are functioning as expected.

8. Customization

RGB Lighting: If desired, incorporate RGB lighting for aesthetics.
Additional Features: Consider adding programmable keys, USB-C connectivity, or wireless capabilities.

9. Final Touches

Testing: Test the keyboard thoroughly for comfort and functionality.
Adjustments: Make any necessary adjustments to the key switches or layout.

Descriptions :

Overlay material ---For front or face overlay
Polyester						Polycarbonate
1 Highly versatile for embossing 2 Highly resistant for chemicals 3 Better durability 4 For internal and external use						1 wide range of the surface finishes and thicknesses 2 More cost-effective 3 For internal and external use 4 many Lexan label choose
Embossing --- Graphic overlay or up circuit can be embossed in order to insert metal stainless steel domes for good tactile when press .Leave space for mechanical keys and provide tactile indications
Pedestal embossing	Rim embossing		Pillow embossing				Dim embossing
Windows or LCD --- For display functions
Printed colors windows such like red ,black and so on					Transparent finishes windows
Keys
Tactile Keys :witch metal domes or Poly domes ,Metal dome with different diameter and pressure kinds					Non-tactile keys: printed silver spot on the circuit
LEDs ---Miniature LEDs ,LED colors :white ,Green ,Red ,Blue ,Yellow ,Orange and others
EL and Sensors or inductors --- EL can be light any place where where you like ,and sensors can be used as LEDs
Cables --- is extension of circuit and communication with your device
Screen printing conductive silver cable		Copper plated cable /Polyimide or FPC						PCB cable
Types of connector --- 1 Zero insertion force(ZIF) with 0.5MM ,1.0MM,1.25MM pitch ;2 Female connector with 2.54MM pitch; 3 Male connector
Shielding --- For protection function
Gasket seal/Waterproof :protect the conductors against from the humidity and splashes				EMI/RFI/ESD Shielding: use an Aluminum foil shielding /clear ITO electrical conductive polyester to protect
Rear Adhesive --- Mostly use the 3M double-side mounting glue brand of USA. Also accepted others such like Lohmann and others
Back plate --- Use in Aluminum ,Polycarbonate ,Acrylic Or PMMA
Matching color --- PMS or RAL Is best ,CMYK or RGB also can be ok if you can supply PMS Or RAL
Standard Tolerances :+/-0.2MM

Performance Index

Environmental	Operating Temperature	-40°C to +80°C (-40°to 176°F)
	Storage Temperature	-40°C to +85°C (-40°to 185°F)
	Humidity	40°C, 90% to 95% for 240 hours
	Vibration	20G's max.
Mechanical	Actuation Force	Non-tactile 60g to 300g (2oz to 10oz)
		Tactile 150g to 400g (6oz to 14oz)
	Switch Stroke	Non-tactile 0.1 to 0.5mm
	Life Expectancy	Tactile 0.6 to 1.5mm
		Non-tactile >5 million actuations
		Tactile >1 million actuations
Electrical	Operating Voltage	35 volts maximum
	Operating Current	10 micro amps to 100 milliamps, resistive
	Operating Power	1 watt maximum
	Circuit Resistance	10 ohms to 500 ohms, dependent on size and layout
	Insulation Resistance	100M ohms at 100V DC
	Dielectric Withstand	>250 VRMs (50-60Hz 1 minute)
	Contact Bounce	≤ 5 milliseconds

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