TKeyboard

There are two circuit boards in total. One is the bottom board without any circuits on it, which serves as the bottom shell for assembly.

1. Solder the front chip components and solder the resistors as shown above. + is the LED positive pole
2. Solder two rows of 1x4 female headers on the front for OLED insertion. OLEDs have VCC pins on the left and GND pins on the left. You can choose by yourself.
3. Three rows of 1x12 female headers are welded on the back for Lenoard insertion. Two sizes, with different intervals. So choose for yourself.
4. Insert the development board into the header
5. Use M3 screws to connect two circuit boards

use

The knob has two modes, volume adjustment/brightness adjustment, press the switch mode button to switch.

• When in volume adjustment mode, the volume/brightness indicator lights up. Turn left to decrease the volume, turn right to increase the volume, and press to switch to mute.
• When in the brightness adjustment mode, the volume/brightness indicator light goes out. Turn left to decrease the brightness, turn right to increase the brightness, and press to switch to mute.

The key functions are as shown in the logo

The second row of buttons has two modes, music/browser, press the music/browser button to switch

• When in music mode, the music/browser indicator lights up, press the button to perform the function shown on the left
• While in browser mode. The music/browser indicator light goes out, press the button to perform the function shown on the right

Revise

• Leonardo has different interfaces. The distance between the two rows of pins on the top is different. You can choose to delete one of the female headers.
• There are also many types of OLED pin headers, one with VCC on the far left and one with GND on the far left. Delete them according to your needs~~~~