Knoblin3
About the Knoblin3 PCB
Knoblin3 is an open source PCB design by ChrisChrisLoLo, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 31.8 × 100 mm, with 11 components from 6 distinct parts.
Other key parts include the SeeeduinoXIAO. By type, the board carries 6 switches, 2 connectors, 2 resistors and 1 IC.
It belongs with the keyboards designs in this gallery.
From the project
The magnetic, modular, 20-key macropad that can join together to form an ortholinear board
A 20 key modular macropad that can connect with other elements to form a larger macropad via magnets. This versatile module in combination with the encoder module (knoblin3) can be used to form a 20 key macropad with 3 encoders, a 4x10 ortholinear board, or a 4x10 ortholinear board with 3 encoders! Each module has a Seeeduino XIAO on it, and all of them communicate on an I2C bus. Because of the I2C bus, more kinds modules can be made for an even more fine tuned and customized macropad/keyboard, as well as up to 128 devices to be connected together at once!
Main components on the Knoblin3
Knoblin3 bill of materials (BOM)
11 components, 6 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SeeeduinoXIAO | Seeeduino XIAO-MOUDLE14P-2.54-21X17.8MM | U1 |
| 1 | Conn_01x04_Male | PinSocket_1x04_P2.54mm_Vertical | J1 |
| 1 | Conn_01x04_Female | PinSocket_1x04_P2.54mm_Vertical | J2 |
| 3 | RotaryEncoder_Switch | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1, SW2, SW3 |
| 3 | SW_SPST | Kailh_socket_MX | SW4, SW5, SW6 |
| 2 | R | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2 |
Knoblin3 design files
The KiCad project lives in the ChrisChrisLoLo/beyblock20 repository on GitHub; these links point at the commit this page was built from.
Knoblin3: common questions
How big is the Knoblin3 PCB?
The Knoblin3 measures 31.8 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Knoblin3?
11 components, from 6 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Knoblin3 design files?
From the ChrisChrisLoLo/beyblock20 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Knoblin3 design in my own project?
Yes, under the terms of its GPL-3.0 license, which ChrisChrisLoLo chose for the repository.
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