diff --git a/cppsrc/U8x8lib.cpp b/cppsrc/U8x8lib.cpp
index e646896e2..f88095867 100644
--- a/cppsrc/U8x8lib.cpp
+++ b/cppsrc/U8x8lib.cpp
@@ -1074,3 +1074,19 @@ void u8x8_SetPin_KS0108(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_
   u8x8_SetPin(u8x8, U8X8_PIN_CS2, cs2);
   u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
 }
+
+void u8x8_SetPin_SED1520(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t dc, uint8_t e1, uint8_t e2, uint8_t reset)
+{
+  u8x8_SetPin(u8x8, U8X8_PIN_D0, d0);
+  u8x8_SetPin(u8x8, U8X8_PIN_D1, d1);
+  u8x8_SetPin(u8x8, U8X8_PIN_D2, d2);
+  u8x8_SetPin(u8x8, U8X8_PIN_D3, d3);
+  u8x8_SetPin(u8x8, U8X8_PIN_D4, d4);
+  u8x8_SetPin(u8x8, U8X8_PIN_D5, d5);
+  u8x8_SetPin(u8x8, U8X8_PIN_D6, d6);
+  u8x8_SetPin(u8x8, U8X8_PIN_D7, d7);
+  u8x8_SetPin(u8x8, U8X8_PIN_E, e1);
+  u8x8_SetPin(u8x8, U8X8_PIN_CS, e2);
+  u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
+  u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
+}
\ No newline at end of file
diff --git a/cppsrc/U8x8lib.h b/cppsrc/U8x8lib.h
index 05ad0a4a5..20cda5f96 100644
--- a/cppsrc/U8x8lib.h
+++ b/cppsrc/U8x8lib.h
@@ -110,6 +110,7 @@ void u8x8_SetPin_HW_I2C(u8x8_t *u8x8, uint8_t reset, uint8_t clock = U8X8_PIN_NO
 void u8x8_SetPin_8Bit_6800(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t cs, uint8_t dc, uint8_t reset);
 void u8x8_SetPin_8Bit_8080(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t wr, uint8_t cs, uint8_t dc, uint8_t reset);
 void u8x8_SetPin_KS0108(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t dc, uint8_t cs0, uint8_t cs1, uint8_t cs2, uint8_t reset);
+void u8x8_SetPin_SED1520(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t dc, uint8_t e1, uint8_t e2, uint8_t reset);
 
 //void u8x8_Setup_4Wire_SW_SPI(u8x8_t *u8x8, u8x8_msg_cb display_cb, uint8_t clock, uint8_t data, uint8_t cs, uint8_t dc, uint8_t reset);
 //void u8x8_Setup_3Wire_SW_SPI(u8x8_t *u8x8, u8x8_msg_cb display_cb, uint8_t clock, uint8_t data, uint8_t cs, uint8_t reset);
diff --git a/csrc/u8x8.h b/csrc/u8x8.h
index 8fa69dc0d..c1d398855 100644
--- a/csrc/u8x8.h
+++ b/csrc/u8x8.h
@@ -610,6 +610,7 @@ void u8x8_byte_set_ks0108_cs(u8x8_t *u8x8, uint8_t arg) U8X8_NOINLINE;
 uint8_t u8x8_byte_ks0108(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
 uint8_t u8x8_byte_ssd13xx_sw_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);  /* OBSOLETE! */
 uint8_t u8x8_byte_sw_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
+uint8_t u8x8_byte_sed1520(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
 
 
 /*==========================================*/
@@ -651,8 +652,8 @@ uint8_t u8x8_byte_sw_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_p
 #define U8X8_MSG_GPIO_D5			U8X8_MSG_GPIO(U8X8_PIN_D5)
 #define U8X8_MSG_GPIO_D6			U8X8_MSG_GPIO(U8X8_PIN_D6)
 #define U8X8_MSG_GPIO_D7			U8X8_MSG_GPIO(U8X8_PIN_D7)
-#define U8X8_MSG_GPIO_E 			U8X8_MSG_GPIO(U8X8_PIN_E)
-#define U8X8_MSG_GPIO_CS			U8X8_MSG_GPIO(U8X8_PIN_CS)
+#define U8X8_MSG_GPIO_E 			U8X8_MSG_GPIO(U8X8_PIN_E)			// used as E1 for the SED1520
+#define U8X8_MSG_GPIO_CS			U8X8_MSG_GPIO(U8X8_PIN_CS)		// used as E2 for the SED1520
 #define U8X8_MSG_GPIO_DC			U8X8_MSG_GPIO(U8X8_PIN_DC)
 #define U8X8_MSG_GPIO_RESET 		U8X8_MSG_GPIO(U8X8_PIN_RESET)
 #define U8X8_MSG_GPIO_I2C_CLOCK	U8X8_MSG_GPIO(U8X8_PIN_I2C_CLOCK)
diff --git a/csrc/u8x8_byte.c b/csrc/u8x8_byte.c
index 2aaaa9e60..a737ce512 100644
--- a/csrc/u8x8_byte.c
+++ b/csrc/u8x8_byte.c
@@ -371,6 +371,64 @@ uint8_t u8x8_byte_ks0108(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_p
 }
 
 
+/* sed1520 or sbn1661 
+  U8X8_MSG_GPIO_E --> E1
+  U8X8_MSG_GPIO_CS --> E2
+*/
+uint8_t u8x8_byte_sed1520(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
+{
+  uint8_t i, b;
+  uint8_t *data;
+  static uint8_t enable_pin;
+ 
+  switch(msg)
+  {
+    case U8X8_MSG_BYTE_SEND:
+      data = (uint8_t *)arg_ptr;
+      while( arg_int > 0 )
+      {
+	b = *data;
+	data++;
+	arg_int--;
+	for( i = U8X8_MSG_GPIO_D0; i <= U8X8_MSG_GPIO_D7; i++ )
+	{
+	  u8x8_gpio_call(u8x8, i, b&1);
+	  b >>= 1;
+	}    
+	
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->data_setup_time_ns);
+	u8x8_gpio_call(u8x8, enable_pin, 1);
+	u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->write_pulse_width_ns);
+	u8x8_gpio_call(u8x8, enable_pin, 0);
+      }
+      break;
+      
+    case U8X8_MSG_BYTE_INIT:
+      /* disable chipselect */
+      u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);    
+      /* ensure that the enable signals are low */
+      u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 0);
+      u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_CS, 0);
+      enable_pin = U8X8_MSG_GPIO_E;
+      break;
+    case U8X8_MSG_BYTE_SET_DC:
+      u8x8_gpio_SetDC(u8x8, arg_int);
+      break;
+    case U8X8_MSG_BYTE_START_TRANSFER:
+      /* cs lines are not supported for the SED1520/SBN1661 */
+      /* instead, this will select the E1 or E2 line */ 
+      enable_pin = U8X8_MSG_GPIO_E;
+      if ( arg_int != 0 )
+	enable_pin = U8X8_MSG_GPIO_CS;
+      break;
+    case U8X8_MSG_BYTE_END_TRANSFER:
+      break;
+    default:
+      return 0;
+  }
+  return 1;
+}
+
 /*=========================================*/
 
 
diff --git a/sys/arduino/u8g2_page_buffer/HelloWorld/HelloWorld.ino b/sys/arduino/u8g2_page_buffer/HelloWorld/HelloWorld.ino
index d618dbdf4..8a8b155d5 100644
--- a/sys/arduino/u8g2_page_buffer/HelloWorld/HelloWorld.ino
+++ b/sys/arduino/u8g2_page_buffer/HelloWorld/HelloWorld.ino
@@ -57,7 +57,7 @@
 // U8g2 Contructor List (Picture Loop Page Buffer)
 // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
 // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
-//U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
+U8G2_SSD1306_128X64_NONAME_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production, Kickstarter Edition)
 //U8G2_SSD1306_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_3W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* reset=*/ 8);
diff --git a/tools/codebuild/codebuild.c b/tools/codebuild/codebuild.c
index b8a5d3725..14cae7e41 100644
--- a/tools/codebuild/codebuild.c
+++ b/tools/codebuild/codebuild.c
@@ -26,6 +26,7 @@
 #define COM_ST7920SPI	0x0020			/* mostly identical to COM_4WSPI, but does not use DC */
 #define COM_UART		0x0040
 #define COM_KS0108	0x0080			/* mostly identical to 6800 mode, but has more chip select lines */
+#define COM_SED1520	0x0100			
 
 struct interface
 {
@@ -585,7 +586,7 @@ struct controller controller_list[] =
   },
 
   {
-    "sbn1661", 		16, 	4, 	"u8g2_ll_hvline_vertical_top_lsb", "u8x8_cad_001", "", COM_KS0108,
+    "sbn1661", 		16, 	4, 	"u8g2_ll_hvline_vertical_top_lsb", "u8x8_cad_001", "", COM_SED1520,
     "", /* is_generate_u8g2_class= */ 1,
     {
       { "122x32" },
@@ -593,7 +594,7 @@ struct controller controller_list[] =
     },
   },
   {
-    "sed1520", 		16, 	4, 	"u8g2_ll_hvline_vertical_top_lsb", "u8x8_cad_001", "", COM_KS0108,
+    "sed1520", 		16, 	4, 	"u8g2_ll_hvline_vertical_top_lsb", "u8x8_cad_001", "", COM_SED1520,
     "", /* is_generate_u8g2_class= */ 1,
     {
       { "122x32" },
@@ -885,6 +886,17 @@ struct interface interface_list[] =
     "cs, dc [, reset]",
     "uC specific"
   },  
+  /* 13 */
+  {
+    "",
+    "u8x8_SetPin_SED1520",
+    "u8x8_byte_sed1520",
+    "u8x8_gpio_and_delay_arduino",   
+    "uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t dc, uint8_t e1, uint8_t e2, uint8_t reset",
+    "d0, d1, d2, d3, d4, d5, d6, d7, dc, e1, e2, reset",
+    "d0, d1, d2, d3, d4, d5, d6, d7, dc, e1, e2, reset",
+    "u8x8_byte_sed1520"
+  },  
   
 
   
@@ -1241,6 +1253,10 @@ void do_display(int controller_idx, int display_idx, const char *postfix)
   {
     do_display_interface(controller_idx, display_idx, postfix, 11);	/* KS0108 6800 parallel mode */
   }
+  if ( controller_list[controller_idx].com & COM_SED1520 )
+  {
+    do_display_interface(controller_idx, display_idx, postfix, 13);
+  }
   
 }
 
@@ -1473,6 +1489,10 @@ void do_md_controller_list(void)
       {
 	do_md_display_interface(controller_idx, display_idx, 11);		/* KS0108 */
       }
+      if ( controller_list[controller_idx].com & COM_SED1520 )
+      {
+	do_md_display_interface(controller_idx, display_idx, 13);		/* SED1520 */
+      }
       
       display_idx++;
     }    
diff --git a/tools/inoupdate/page_buffer.ino b/tools/inoupdate/page_buffer.ino
index 3142d6ad3..e5e58ac33 100644
--- a/tools/inoupdate/page_buffer.ino
+++ b/tools/inoupdate/page_buffer.ino
@@ -77,6 +77,8 @@
 //U8G2_LC7981_160X80_1_6800 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RW with GND
 //U8G2_LC7981_160X160_1_6800 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RW with GND
 //U8G2_LC7981_240X128_1_6800 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RW with GND
+
+//U8G2_SED1520_122X32_1 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*dc=*/ 17, /*e1=*/ 14, /*e2=*/ 15, /* reset=*/  U8X8_PIN_NONE); 	// Set R/W to low!
 //U8G2_T6963_240X128_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RD with +5V, FS0 and FS1 with GND
 //U8G2_T6963_256X64_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RD with +5V, FS0 and FS1 with GND
 //U8G2_SED1330_240X128_1_8080 u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect /RD = E with +5V, enable is /WR = RW, FG with GND, 14=Uno Pin A0