diff --git a/keyboards/helix/rev2/keymaps/five_rows/oled_display.c b/keyboards/helix/rev2/keymaps/five_rows/oled_display.c
deleted file mode 100644
index dc6de02b1764..000000000000
--- a/keyboards/helix/rev2/keymaps/five_rows/oled_display.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/* Copyright 2020 mtei
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include QMK_KEYBOARD_H
-#include <stdio.h>
-#ifdef CONSOLE_ENABLE
-  #include "print.h"
-#endif
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
-#include <string.h>
-#include "layer_number.h"
-
-extern int current_default_layer;
-
-void init_helix_oled(void) {
-#ifdef SSD1306OLED
-    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-    iota_gfx_init(!has_usb());   // turns on the display
-#endif
-}
-
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#if defined(SSD1306OLED) || defined(OLED_ENABLE)
-
-#    if defined(OLED_ENABLE)
-oled_rotation_t oled_init_user(oled_rotation_t rotation) {
-    if (is_keyboard_master()) {
-        return OLED_ROTATION_0;
-    } else {
-        return OLED_ROTATION_180;
-    }
-}
-#    else
-#    define oled_write(data,flag)    matrix_write(matrix, data)
-#    define oled_write_P(data,flag)  matrix_write_P(matrix, data)
-#    endif
-
-#    ifdef SSD1306OLED
-void matrix_scan_user(void) {
-    iota_gfx_task();  // this is what updates the display continuously
-}
-
-void matrix_update(struct CharacterMatrix *dest,
-                   const struct CharacterMatrix *source) {
-    if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-        memcpy(dest->display, source->display, sizeof(dest->display));
-        dest->dirty = true;
-    }
-}
-#    endif
-
-static char *sprint_decimal(char *buf, int data) {
-    if (data > 9) {
-        buf = sprint_decimal(buf, data/10);
-    }
-    *buf++ = "0123456789"[data%10];
-    *buf = '\0';
-    return buf;
-}
-
-static char *sprint_hex(char *buf, uint32_t data) {
-    if (data > 0xf) {
-        buf = sprint_hex(buf, data/0x10);
-    }
-    *buf++ = "0123456789abcdef"[data & 0xf];
-    *buf = '\0';
-    return buf;
-}
-
-char *sprints(char *buf, char *src) {
-    while (*src) {
-        *buf++ = *src++;
-    }
-    *buf = '\0';
-    return buf;
-}
-
-char *sprintx(char *buf, char *leadstr, uint32_t data) {
-    buf = sprints(buf, leadstr);
-    buf = sprint_hex(buf, data);
-    return buf;
-}
-
-char *sprintd(char *buf, char *leadstr, int data) {
-    buf = sprints(buf, leadstr);
-    buf = sprint_decimal(buf, data);
-    return buf;
-}
-
-char *sprint2d(char *buf, char *leadstr, int data) {
-    buf = sprints(buf, leadstr);
-    if (data > 99) {
-        return sprint_decimal(buf, data);
-    }
-    if (data < 10) {
-        *buf++ = ' ';
-    }
-    return sprint_decimal(buf, data);
-}
-
-#    ifdef SSD1306OLED
-static void render_logo(struct CharacterMatrix *matrix) {
-#    else
-static void render_logo(void) {
-#    endif
-
-    static const char helix_logo[] PROGMEM = {
-        0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
-        0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
-        0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
-        0};
-    oled_write_P(helix_logo, false);
-    char buf[30];
-    char *bufp;
-#    ifdef RGBLIGHT_ENABLE
-    if (RGBLIGHT_MODES > 1 && rgblight_is_enabled()) {
-        bufp = sprint2d(buf, " LED ", rgblight_get_mode());
-#        ifdef DEBUG_MATRIX_SCAN_RATE
-        bufp = sprintd(bufp, "  scan:", get_matrix_scan_rate());
-#        else
-        bufp = sprintd(bufp, ": ", rgblight_get_hue()/RGBLIGHT_HUE_STEP);
-        bufp = sprintd(bufp, ",", rgblight_get_sat()/RGBLIGHT_SAT_STEP);
-        bufp = sprintd(bufp, ",", rgblight_get_val()/RGBLIGHT_VAL_STEP);
-        bufp = sprints(bufp, " ");
-#        endif
-        oled_write(buf, false);
-#        ifndef SSD1306OLED
-    } else {
-#        ifdef DEBUG_MATRIX_SCAN_RATE
-        bufp = sprintd(buf, "  scan:", get_matrix_scan_rate());
-        oled_write(buf, false);
-#        endif
-        oled_write_P( PSTR("\n"), false);
-#        endif
-    }
-#    else
-#        ifdef DEBUG_MATRIX_SCAN_RATE
-    bufp = sprintd(buf, " scan:", get_matrix_scan_rate());
-    bufp = sprints(bufp, " ");
-    oled_write(buf, false);
-#        endif
-#    endif
-}
-
-static const char Qwerty_name[]  PROGMEM = " Qwerty";
-static const char Colemak_name[] PROGMEM = " Colemak";
-static const char Dvorak_name[]  PROGMEM = " Dvorak";
-static const char Eucalyn_name[] PROGMEM = " Eucalyn";
-static const char Keypad_name[]  PROGMEM = " Keypad";
-
-static const char AUX_name[]     PROGMEM = ":AUX";
-static const char KAUX_name[]    PROGMEM = ":00";
-static const char Padfunc_name[] PROGMEM = ":PadFunc";
-static const char Lower_name[]   PROGMEM = ":Func";
-static const char Raise_name[]   PROGMEM = ":Extra";
-static const char Adjust_name[]  PROGMEM = ":Adjust";
-
-static const char *layer_names[] = {
-    [_QWERTY] = Qwerty_name,
-    [_COLEMAK] = Colemak_name,
-    [_DVORAK] = Dvorak_name,
-    [_EUCALYN]= Eucalyn_name,
-    [_KEYPAD] = Keypad_name,
-    [_AUX]    = AUX_name,
-    [_KAUX]   = KAUX_name,
-    [_LOWER]  = Lower_name,
-    [_RAISE]  = Raise_name,
-    [_PADFUNC]= Padfunc_name,
-    [_ADJUST] = Adjust_name
-};
-
-#    ifdef SSD1306OLED
-void render_status(struct CharacterMatrix *matrix) {
-#    else
-void render_status(void) {
-#    endif
-
-    // Render to mode icon
-    static const char os_logo[][2][3] PROGMEM ={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
-    if(keymap_config.swap_lalt_lgui==false){
-        oled_write_P(os_logo[0][0], false);
-        oled_write_P(PSTR("\n"), false);
-        oled_write_P(os_logo[0][1], false);
-    } else {
-        oled_write_P(os_logo[1][0], false);
-        oled_write_P(PSTR("\n"), false);
-        oled_write_P(os_logo[1][1], false);
-    }
-
-    // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
-    int name_num;
-    uint32_t lstate;
-    oled_write_P(layer_names[current_default_layer], false);
-#    ifdef DEBUG_MATRIX_SCAN_RATE
-    char buf[16];
-    sprintd(buf, " scan:", get_matrix_scan_rate());
-    oled_write(buf, false);
-#    endif
-    oled_write_P(PSTR("\n"), false);
-    for (lstate = layer_state, name_num = 0;
-         lstate && name_num < sizeof(layer_names)/sizeof(char *);
-         lstate >>=1, name_num++) {
-        if ((lstate & 1) != 0) {
-            if (layer_names[name_num]) {
-                oled_write_P(layer_names[name_num], false);
-            }
-        }
-    }
-    oled_write_P(PSTR("\n"), false);
-
-    // Host Keyboard LED Status
-    led_t led_state = host_keyboard_led_state();
-    oled_write_P(led_state.num_lock ? PSTR("NUMLOCK  ") : PSTR("         "), false);
-    oled_write_P(led_state.caps_lock ? PSTR("CAPS  ") : PSTR("      "), false);
-    oled_write_P(led_state.scroll_lock ? PSTR("SCLK  ") : PSTR("      "), false);
-}
-
-#    ifdef SSD1306OLED
-#        if OLED_UPDATE_INTERVAL > 0
-uint16_t oled_update_timeout;
-#        endif
-
-void iota_gfx_task_user(void) {
-    struct CharacterMatrix matrix;
-
-#        if DEBUG_TO_SCREEN
-    if (debug_enable) {
-        return;
-    }
-#        endif
-
-#if      OLED_UPDATE_INTERVAL > 0
-    if (timer_elapsed(oled_update_timeout) < OLED_UPDATE_INTERVAL) {
-        return;
-    }
-    oled_update_timeout = timer_read();
-#endif
-    matrix_clear(&matrix);
-    if (is_keyboard_master()) {
-        render_status(&matrix);
-    } else {
-        render_logo(&matrix);
-    }
-    matrix_update(&display, &matrix);
-}
-#    else
-bool oled_task_user(void) {
-
-#        if DEBUG_TO_SCREEN
-    if (debug_enable) {
-        return;
-    }
-#        endif
-
-    if(is_keyboard_master()){
-        render_status();
-    }else{
-        render_logo();
-    }
-    return false;
-}
-#    endif
-
-#endif
diff --git a/keyboards/helix/rev2/keymaps/five_rows/rules.mk b/keyboards/helix/rev2/keymaps/five_rows/rules.mk
index a92591d36bef..6604f6309be9 100644
--- a/keyboards/helix/rev2/keymaps/five_rows/rules.mk
+++ b/keyboards/helix/rev2/keymaps/five_rows/rules.mk
@@ -1,4 +1,5 @@
- SPLIT_KEYBOARD = yes
+USER_NAME := mtei
+SPLIT_KEYBOARD = yes
 
  CONSOLE_ENABLE = no        # Console for debug
  COMMAND_ENABLE = no        # Commands for debug and configuration
diff --git a/keyboards/helix/rev3_5rows/keymaps/five_rows/config.h b/keyboards/helix/rev3_5rows/keymaps/five_rows/config.h
index e1c124f419c8..02d4425d62f8 100644
--- a/keyboards/helix/rev3_5rows/keymaps/five_rows/config.h
+++ b/keyboards/helix/rev3_5rows/keymaps/five_rows/config.h
@@ -35,6 +35,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #    define OLED_UPDATE_INTERVAL 50
 #endif
 
+#define PSEUDO_SPRINTF_DEFINED
+
 // place overrides here
 
 // If you need more program area, try select and reduce rgblight modes to use.
diff --git a/keyboards/helix/rev3_5rows/keymaps/five_rows/rules.mk b/keyboards/helix/rev3_5rows/keymaps/five_rows/rules.mk
index 3f3bd9a9ab50..1d7f2f2744cc 100644
--- a/keyboards/helix/rev3_5rows/keymaps/five_rows/rules.mk
+++ b/keyboards/helix/rev3_5rows/keymaps/five_rows/rules.mk
@@ -1,3 +1,5 @@
+USER_NAME := mtei
+
  CONSOLE_ENABLE = no        # Console for debug
  COMMAND_ENABLE = no        # Commands for debug and configuration
  # CONSOLE_ENABLE and COMMAND_ENABLE
diff --git a/keyboards/helix/rev3_5rows/keymaps/five_rows/oled_display.c b/users/mtei/oled_display.c
similarity index 97%
rename from keyboards/helix/rev3_5rows/keymaps/five_rows/oled_display.c
rename to users/mtei/oled_display.c
index cee415ad30b8..6a16b23b0e1d 100644
--- a/keyboards/helix/rev3_5rows/keymaps/five_rows/oled_display.c
+++ b/users/mtei/oled_display.c
@@ -25,9 +25,7 @@
 #include <string.h>
 #include "layer_number.h"
 
-char *sprints(char *buf, char *src);
-char *sprintd(char *buf, char *leadstr, int data);
-char *sprint2d(char *buf, char *leadstr, int data);
+#include "pseudo_sprintf.h"
 
 extern int current_default_layer;
 
@@ -68,6 +66,10 @@ void matrix_update(struct CharacterMatrix *dest,
 }
 #    endif
 
+#ifndef PSEUDO_SPRINTF_DEFINED
+#include "pseudo_sprintf.c"
+#endif
+
 #    ifdef SSD1306OLED
 static void render_logo(struct CharacterMatrix *matrix) {
 #    else
@@ -80,8 +82,10 @@ static void render_logo(void) {
         0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
         0};
     oled_write_P(helix_logo, false);
+#    if defined(RGBLIGHT_ENABLE) || defined(DEBUG_MATRIX_SCAN_RATE)
     char buf[30];
     char *bufp;
+#    endif
 #    ifdef RGBLIGHT_ENABLE
     if (RGBLIGHT_MODES > 1 && rgblight_is_enabled()) {
         bufp = sprint2d(buf, " LED ", rgblight_get_mode());
diff --git a/users/mtei/pseudo_sprintf.c b/users/mtei/pseudo_sprintf.c
new file mode 100644
index 000000000000..446e3efc655a
--- /dev/null
+++ b/users/mtei/pseudo_sprintf.c
@@ -0,0 +1,53 @@
+// Copyright 2022 Takeshi Ishii (@mtei)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "pseudo_sprintf.h"
+
+static char *sprint_decimal(char *buf, int data) {
+    if (data > 9) {
+        buf = sprint_decimal(buf, data/10);
+    }
+    *buf++ = "0123456789"[data%10];
+    *buf = '\0';
+    return buf;
+}
+
+static char *sprint_hex(char *buf, uint32_t data) {
+    if (data > 0xf) {
+        buf = sprint_hex(buf, data/0x10);
+    }
+    *buf++ = "0123456789abcdef"[data & 0xf];
+    *buf = '\0';
+    return buf;
+}
+
+char *sprints(char *buf, char *src) {
+    while (*src) {
+        *buf++ = *src++;
+    }
+    *buf = '\0';
+    return buf;
+}
+
+char *sprintx(char *buf, char *leadstr, uint32_t data) {
+    buf = sprints(buf, leadstr);
+    buf = sprint_hex(buf, data);
+    return buf;
+}
+
+char *sprintd(char *buf, char *leadstr, int data) {
+    buf = sprints(buf, leadstr);
+    buf = sprint_decimal(buf, data);
+    return buf;
+}
+
+char *sprint2d(char *buf, char *leadstr, int data) {
+    buf = sprints(buf, leadstr);
+    if (data > 99) {
+        return sprint_decimal(buf, data);
+    }
+    if (data < 10) {
+        *buf++ = ' ';
+    }
+    return sprint_decimal(buf, data);
+}
diff --git a/users/mtei/pseudo_sprintf.h b/users/mtei/pseudo_sprintf.h
new file mode 100644
index 000000000000..1b91ee5ea8d0
--- /dev/null
+++ b/users/mtei/pseudo_sprintf.h
@@ -0,0 +1,8 @@
+// Copyright 2022 Takeshi Ishii (@mtei)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+char *sprints(char *buf, char *src);
+char *sprintd(char *buf, char *leadstr, int data);
+char *sprint2d(char *buf, char *leadstr, int data);