Macro keyboard

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Kapacita22uF

Published: Oct 10,2024

Hotswap macro keyboard with 6 keys, encoder, I2C OLED, IR TX, IR RX and LTC4054ES5-4.2

Attribution-ShareAlike (CC BY-SA)

Story

IMK6K

-Hotswap macro keyboard with 6 keys and backlight( WS2812B-3535 OR WS2812B-2020)

-Encoder

-I2C OLED

-CH32X033

Soldered jumpers:

JP7 -U1 power

JLP1 -LED power

JOP1- OLED power

JP3- OLED SCL

JP4-OLED SDA

CH32X033 I/O:

PIN	I/O	FUNCTION
1-3	INPUT	SW1-SW3 (PA6,PA7,PB1)
4	OUTPUT	IR PWR ON/OFF (PB7)
5,6	USB	USB D-, D+
7	POWER	GND
8	PROG.PIN/OUTPUT	SWDIO / LED PWR ON (PC18)
9	POWER	VDD
10-12	INPUT	SW4,SW5,SW6 (PA9,PA11,PA10)
13	OUTPUT	RGB LED (WS2812B) (PC3)
14	AD	CURRENT MEASUREMENT VIA USB (A0)
15	OUTPUT	OLED SCL (PA1)
16	INPUT / OUTPUT	OLED SDA(PA2)
17	INPUT	ENCODER A (PA3)
18	PROG.PIN / OUTPUT	SWDCK / IR TX (PC19)
19	INPUT	ENCODER B (PA4)
20	INPUT	ENCODER BUTTON / IR RX (PA5)

Materials:

Development material-CH32x03x

External module:

Here is a link to a project with pins in which you can use the MCU you want:

Wiring jumpers when using an external module

Jumper	Function	Soldered
JP1	LED power on/off	NO
JP2	Fotoresistor	NO
JP3	OLED SCL	NO
JP4	OLED SDA	NO
JP5	IR TX	NO
JP6	IR RX	NO
JP7	VDD on U1(CH32X033)	NO
JG1	Direct Baterry - with GND	YES If you do not want to measure battery current ( INAB1 )
JIR1	Direct power connection for IR TX,RX	YES If you do not want to turn on/off the power supply with the MCU (irpwron)
JLP1	Direct power connection for LEDs	YES If you do not want to turn on/off the power supply with the MCU (ledpwron)
JOP1	Direct power connection for OLED	YES If you do not want to turn on/off the power supply with the MCU (oledpwron)