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PROMulti-function macro keyboard 3Plus

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License

：

CC BY-NC-SA 4.0

Creation time:2025-03-19 08:17:11Update time:2025-03-20 01:55:55

Description

After more than a year

Version 2.0 has been updated with lower costs and easier replication

Multifunctional Macro Keyboard 3Plus [V2 Version] - Jialichuang EDA Open Source Hardware Platform ( oshwhub.com )

Version 1.0 no longer provides updates

Information

https://www.bilibili.com/video/BV1Yd4y1g7KR/

Most macro keyboards do not have real-time display of key definition indicators.

If the function of the macro keyboard is modified, it can only be recorded by memorizing or pasting notes, which lacks flexibility.

This is a macro keyboard that combines display and keys, making it easy to modify key values.

It's not just a keyboard, but also has other wonderful uses.

Welcome to join the group 850421922

Possible problems that may be encountered:

Unable to recognize the serial port: Before powering on , press and hold the first button on the left, and then insert the USB. This step will also enter the burning mode. After burning is completed, restart
Compile prompts when downloading firmware,/.pio/build/lolin_c3_mini/firmware.map: No such file or directory: Put the project into a non-Chinese directory

Software

Use platformIO for development, download, convenient and easy to use.

Please refer to the attachment for the software code.

The main implementation is a functional interface switching architecture, which is very easy to add various other functions according to certain writing rules.

Using FreeRTOS for task scheduling, the main tasks are:

Key scan
Interface display update
PC status acquisition
Weather acquisition

Attention

When downloading, if you encounter a situation where the serial port cannot be recognized, you can insert USB power while holding down the leftmost button, and then you will see a serial port prompt, release the button

Flashing

Complete all operations using PlatformIO

1. Firmware burning

2 Burn resource files

Assembly

Transparent Exploration Edition 's detailed assembly video is here https://www.bilibili.com/video/BV1aP411u7Am

Due to the lack of modification and optimization of the disp board, attention should be paid to welding and assembly, as shown in the figure below.

3D printing version 1.3, when installing the buttons, pay attention to the direction of the mechanical keys and the shell.

Due to image upload restrictions, you can switch to the high definition version.

If the charging function is not required, the charging chip does not need to be soldered, as shown in the red box.

Updating

2022-12-07

Update 1.1.0 firmware

Use WiFiManager to modify parameters such as wifi and automatically add clock type.

The clock part has been modified, adjusted in size and type, limited by the size of the resource area, the clock type has been reduced, leaving only the one I often use.

Fix some previous bugs.

If weather-related information is not filled in, do not use the weather function, it may restart.

Add OTA upgrade. When booting up, hold down the third button from the left until the word OTA appears on the third screen.

If you want to reconfigure WIFI, keep pressing the second button from the left when turning on the computer, and the screen will prompt you.

2022-11-11

Update the stl file to version 1.3:

Use three M2.5X5 screws.

Increase the tail USB interface power supply, you can consider buying this board , but I did not test it.

Recently, the three-dimensional monkey has launched transparent 3D printing , and a transparent exploration effect is also available.

License

CC-BY-NC-SA 4.0

Hardware

Main control module

The main control uses ESP32-C3, supports BLE + wifi; also supports USB download, eliminating the need for a serial port chip; responsible for controlling the display part, detecting the input of buttons .

Mechanical key display module

Due to the possibility of changes in the functions of the macro keyboard, the keys and display screen have been integrated to facilitate key definition and display according to different functions. Three sets are used using a 0.95-inch RGBOLED + mechanical axis method.