diff --git a/eeprom/Makefile b/eeprom/Makefile
deleted file mode 100644
index 1c9f33b..0000000
--- a/eeprom/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-TARGET:=eeprom
-#ADDITIONAL_C_FILES:=../ch32v003fun/lib_i2c.c
-include ../ch32v003fun/ch32v003fun.mk
-clean:
-	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).bin $(TARGET).map $(TARGET).lst \
-		$(TARGET).o $(TARGET).d $(TARGET).srec $(TARGET).sym $(TARGET).lss
-
-.PHONY: clean
diff --git a/eeprom/eeprom.c b/eeprom/eeprom.c
deleted file mode 100644
index 89b1de2..0000000
--- a/eeprom/eeprom.c
+++ /dev/null
@@ -1,59 +0,0 @@
-#define CH32V003_I2C_IMPLEMENTATION
-#include <stdio.h>
-#include "ch32v003_i2c.h"
-// obtained from i2c_scan(), before shifting by 1 bit
-#define EEPROM_ADDR 0x51
-
-int main(void) {
-    SystemInit();
-    i2c_init();
-    uint8_t found = 0;
-    i2c_result_e result = i2c_ping(EEPROM_ADDR, &found);
-    
-    printf("\nping result: %d\n", result);
-    printf("found: %d\n", found);
-    i2c_scan();
-    Delay_Ms(1000);
-    while (1) {
-
-        #define addr_begin 0
-        #define addr_end 0x39F
-        #define reg_size (addr_end - addr_begin + 1)
-        #define matrix_hori 16
-        // write
-        {
-            uint8_t data[reg_size] = {0};
-            for (uint16_t i = 0; i < reg_size; i++) {
-                data[i] = i % 0xFF;
-            }
-            result =
-                i2c_write_pages(EEPROM_ADDR, addr_begin, I2C_REGADDR_2B, data, reg_size);
-            printf("write result: %d\n", result);
-            printf("Written data as matrix:\n");
-            for (uint16_t i = 0; i < reg_size; i++) {
-                printf("%02X ", data[i]);
-                if ((i + 1) % matrix_hori == 0) {
-                    printf("\n");
-                }
-            }
-            printf("\n");
-            Delay_Ms(1000);
-        }
-        // read
-        {
-            uint8_t read_data[reg_size] = {0};
-            result =
-                i2c_read_pages(EEPROM_ADDR, addr_begin, I2C_REGADDR_2B, read_data, reg_size);
-            printf("read result: %d\n", result);
-            printf("Read data as matrix:\n");
-            for (uint16_t i = 0; i < reg_size; i++) {
-                printf("%02X ", read_data[i]);
-                if ((i + 1) % matrix_hori == 0) {
-                    printf("\n");
-                }
-            }
-            printf("\n");
-            Delay_Ms(1000);
-        }
-    }
-}
diff --git a/eeprom/funconfig.h b/eeprom/funconfig.h
deleted file mode 100644
index 38e859d..0000000
--- a/eeprom/funconfig.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef _FUNCONFIG_H
-#define _FUNCONFIG_H
-
-#define CH32V003 1
-#define FUNCONF_USE_DEBUGPRINTF 0
-#define FUNCONF_USE_UARTPRINTF 1
-#define FUNCONF_UART_PRINTF_BAUD 115200
-//#define FUNCONF_SYSTICK_USE_HCLK 1
-//#define GPIO_ADC_MUX_DELAY 1200
-#define horizontalButtons 8
-#define verticalButtons 8
-#define NUM_LEDS (horizontalButtons * verticalButtons)
-
-//#define CH32V003J4M6_USE_PD6_AS_UART_TX
-//#define INTERNAL_INSPIRE_MATRIX
-
-#endif
diff --git a/menu/Makefile b/menu/Makefile
deleted file mode 100644
index 1e629e6..0000000
--- a/menu/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-TARGET:=menu
-include ../ch32v003fun/ch32v003fun.mk
-clean:
-	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).bin $(TARGET).map $(TARGET).lst \
-		$(TARGET).o $(TARGET).d $(TARGET).srec $(TARGET).sym $(TARGET).lss
-	$(MAKE) -f Makefile-emulator clean
-
-emulator:
-	$(MAKE) -f Makefile-emulator clean
-	$(MAKE) -f Makefile-emulator
diff --git a/menu/funconfig.h b/menu/funconfig.h
deleted file mode 100644
index 8385aeb..0000000
--- a/menu/funconfig.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef _FUNCONFIG_H
-#define _FUNCONFIG_H
-
-#define CH32V003 1
-#define FUNCONF_USE_DEBUGPRINTF 0
-#define FUNCONF_USE_UARTPRINTF 1
-#define FUNCONF_UART_PRINTF_BAUD 115200
-#define horizontalButtons 8
-#define verticalButtons 8
-#define NUM_LEDS (horizontalButtons * verticalButtons)
-
-#define FUNCONF_SYSTICK_USE_HCLK 1
-
-#endif
diff --git a/menu/menu.c b/menu/menu.c
deleted file mode 100644
index c5d0937..0000000
--- a/menu/menu.c
+++ /dev/null
@@ -1,20 +0,0 @@
-#define WS2812BSIMPLE_IMPLEMENTATION
-#include "colors.h"
-#include "driver.h"
-#include "ws2812b_simple.h"
-#include <stdio.h>
-
-#define LED_PINS GPIOA, 2
-
-void display_paint_icon(void) {
-    clear();
-    const color_t paint_color = {.r = 0, .g = 255, .b = 0};
-    set_color(49, paint_color);
-    set_color(54, paint_color);
-    WS2812BSimpleSend(LED_PINS, (uint8_t *)led_array, NUM_LEDS * 3);
-}
-
-int main(void) {
-    SystemInit();
-    display_paint_icon();
-}