64-key inline keyboard with numeric keypad [ATmega32A]

This project is derived from the free combination keyboard: 16, 32, 4x, 6x keys [ATmega32a]: https://oshwhub.com/iqirtryi/pkb16x4-atmega32a This project provides the following 3 modules for selection on demand and free splicing and combination .
 
This project uses four identical Module A circuit boards spliced ​​from left to right. The size of the circuit board meets the conditions for free proofing. The 1U keyboard does not require satellite axes, and the positioning plate and base plate adopt a split design, which meets JP's free prototyping conditions. Therefore, it is simple and cheap to make, and is the first choice for entry-level users. You can directly select the firmware .hex file provided by the original project, or refer to the provided QMK source code to modify and compile according to your own habits. Added 62-, 63-, and 64-key positioning plates, base plates, and frame design drawings, as well as split-design 64-key positioning plates and base plates. The keyboard shown in the picture below was produced by Camel, and VIA-supported firmware is provided for selection.   
 
The shell drawing attached to the project can be directly exported as a dxf file for acrylic cutting. The divided positioning plate and base plate drawings can be exported as Gerber files for production. Modify and compile the firmware according to your own habits, and you can make it into a numeric keypad on the right side. If necessary, you can also add module B or C to form different keyboards.