25-key STM32+Bluetooth HID mechanical keyboard

1. Hot-swappable base, 4 pieces each, 10 yuan in total for 25 pieces. 2. 1 0.91-inch OLED screen, 8 yuan in total. 3. BTK Bluetooth HID module 1 piece (free shipping), 25 yuan in total. 4. Main control STM32F103C8T6, 1 piece in total. 6.5 yuan 5. Counter-stick ws2812b 3528 size 25 pieces total 9.5 yuan (0.38 each without free shipping) 6. High-tech purple shaft, no sleeve 4 hairs each total 10 yuan 7. PBT keycap, white translucent garbage bag 104 keys 10 yuan

1. 0.91-inch OLED screen 2. STM32+ Bluetooth HID module 3. There is 63x100 space left for the battery. You can buy a 10000mA 4. 25 button, hot-swappable. 5. SMD light WS2812B 6. Disadvantages of TYPE-C key line separation: 1. Limited capabilities. I don’t know how to make a host computer, so I can’t customize the keys. I plan to modify the keyboard key values ​​through the serial port or consider switching. Set up 3 sets of key combinations that I commonly use. OLED cooperates to display the current keyboard layout keys 2. I don’t know how to program fancy lights. 3. The power consumption should be relatively high, at least higher than those sold on the market. 4. The cost is a bit high. The cost of one piece is more than 61 yuan (including hot-swappable base, components, chips, etc.; but does not include component postage, shaft, battery, PCB steel plate and casing)

Summary: After the board is tested and normal, and the programming is usable, a sample PCB and download program will be provided. In the future, you can make it yourself. The program is downloaded through the serial port/SWD.

PSS: There is something wrong with the light.  There is a problem with the lights now. The first light cannot be controlled, and it cannot be controlled individually and can only be controlled globally. I am still learning about RGB lights and modifying them later.