diff --git a/src/AR488/AR488.ino b/src/AR488/AR488.ino
index 2fb13f5..249802c 100644
--- a/src/AR488/AR488.ino
+++ b/src/AR488/AR488.ino
@@ -14,7 +14,8 @@
 #include "AR488_Eeprom.h"
 
 
-/***** FWVER "AR488 GPIB controller, ver. 0.51.27, 14/02/2024" *****/
+/***** FWVER "AR488 GPIB controller, ver. 0.51.28, 16/02/2024" *****/
+
 /*
   Arduino IEEE-488 implementation by John Chajecki
 
diff --git a/src/AR488/AR488_Config.h b/src/AR488/AR488_Config.h
index 9eb97f0..c68dfcd 100644
--- a/src/AR488/AR488_Config.h
+++ b/src/AR488/AR488_Config.h
@@ -7,8 +7,7 @@
 
 
 /***** Firmware version *****/
-#define FWVER "AR488 GPIB controller, ver. 0.51.27, 14/02/2024"
-
+#define FWVER "AR488 GPIB controller, ver. 0.51.28, 16/02/2024"
 
 
 /***** BOARD CONFIGURATION *****/
@@ -65,10 +64,15 @@
   /* Board/layout selection */
   #define AR488_MEGA644P_MCGRAW
 
-/***** ESP 32 VROOM-32 *****/
+/***** ESP32 boards *****/
 #elif defined(ESP32)
-  #define NON_ARDUINO
-  #define ESP32_WROOM_32
+  #define NON_ARDUINO   // MUST BE DEFINED!
+  #define ESP32_DEVKIT1_WROOM_32
+  // David Douard / Johann Wilhelm board layouts
+  //#define ESP32_TTGO_T8_161
+  //#define ESP32_ESP32DEV
+  //#define ESP32_LOLIN32_161   // ESP32_LOLIN32_161_V2 profile has the same pin assigments
+  //#define ESP32_S2_161
 
 /***** RPI PIco and Pico W *****/
 //#elif defined(ARDUINO_ARCH_RP2040)
diff --git a/src/AR488/AR488_Layouts.cpp b/src/AR488/AR488_Layouts.cpp
index c1cfe8f..679d2b2 100644
--- a/src/AR488/AR488_Layouts.cpp
+++ b/src/AR488/AR488_Layouts.cpp
@@ -3,7 +3,8 @@
 #include "AR488_Config.h"
 #include "AR488_Layouts.h"
 
-/***** AR488_Hardware.cpp, ver. 0.51.27, 14/02/2024 *****/
+/***** AR488_Hardware.cpp, ver. 0.51.28, 16/02/2024 *****/
+
 /*
  * Hardware layout function definitions
  */
diff --git a/src/AR488/AR488_Layouts.h b/src/AR488/AR488_Layouts.h
index d26d710..c2f757f 100644
--- a/src/AR488/AR488_Layouts.h
+++ b/src/AR488/AR488_Layouts.h
@@ -6,7 +6,8 @@
 #include "AR488_Config.h"
 
 
-/***** AR488_Hardware.h, ver. 0.51.27, 14/02/2024 *****/
+/***** AR488_Hardware.h, ver. 0.51.28, 16/02/2024 *****/
+
 /*
  * Hardware pin layout definitions
  */
@@ -316,7 +317,7 @@ uint8_t getMcpIntAReg();
 /***********************************/
 /***** ESP32 LAYOUT DEFINITION *****/
 /***** vvvvvvvvvvvvvvvvvvvvvvv *****/
-#ifdef ESP32_WROOM_32
+#ifdef ESP32_DEVKIT1_WROOM_32
 
 #define DIO1_PIN  32   /* GPIB 1  */
 #define DIO2_PIN  33   /* GPIB 2  */
@@ -327,9 +328,9 @@ uint8_t getMcpIntAReg();
 #define DIO7_PIN   4   /* GPIB 15 */
 #define DIO8_PIN  13   /* GPIB 16 */
 
-#define IFC_PIN   23    /* GPIB 9  */
-#define NDAC_PIN  22    /* GPIB 8  */
-#define NRFD_PIN  21    /* GPIB 7  */
+#define IFC_PIN   23   /* GPIB 9  */
+#define NDAC_PIN  22   /* GPIB 8  */
+#define NRFD_PIN  21   /* GPIB 7  */
 #define DAV_PIN   19   /* GPIB 6  */
 #define EOI_PIN   18   /* GPIB 5  */
 
@@ -337,13 +338,138 @@ uint8_t getMcpIntAReg();
 #define REN_PIN   17   /* GPIB 17 */
 #define ATN_PIN   16   /* GPIB 11 */
 
-#endif // ESP32_WROOM_32
+#endif // ESP32_DEVKIT1_WROOM_32
 /***** ^^^^^^^^^^^^^^^^^^^^^^^ *****/
 /***** ESP32 LAYOUT DEFINITION *****/
 /***********************************/
 
 
 
+/***********************************************/
+/***** ESP32_TTGO_T8_161 LAYOUT DEFINITION *****/
+/***** vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv *****/
+#ifdef ESP32_TTGO_T8_161
+
+#define DIO1_PIN  34   /* GPIB 1  */
+#define DIO2_PIN  35   /* GPIB 2  */
+#define DIO3_PIN  32   /* GPIB 3  */
+#define DIO4_PIN  33   /* GPIB 4  */
+#define DIO5_PIN  25   /* GPIB 13 */
+#define DIO6_PIN  26   /* GPIB 14 */
+#define DIO7_PIN  27   /* GPIB 15 */
+#define DIO8_PIN  14   /* GPIB 16 */
+
+#define IFC_PIN   15   /* GPIB 9  */
+#define NDAC_PIN  22   /* GPIB 8  */
+#define NRFD_PIN  19   /* GPIB 7  */
+#define DAV_PIN   23   /* GPIB 6  */
+#define EOI_PIN   18   /* GPIB 5  */
+
+#define SRQ_PIN    2   /* GPIB 10 */
+#define REN_PIN   13   /* GPIB 17 */
+#define ATN_PIN    5   /* GPIB 11 */
+
+#endif // ESP32_TTGO_T8_161
+/***** ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ *****/
+/***** ESP32_TTGO_T8_161 LAYOUT DEFINITION *****/
+/****************************************************/
+
+
+
+/********************************************/
+/***** ESP32_ESP32DEV LAYOUT DEFINITION *****/
+/***** vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv *****/
+#ifdef ESP32_ESP32DEV
+
+#define DIO1_PIN  33   /* GPIB 1  */
+#define DIO2_PIN  32   /* GPIB 2  */
+#define DIO3_PIN  26   /* GPIB 3  */
+#define DIO4_PIN  25   /* GPIB 4  */
+#define DIO5_PIN  14   /* GPIB 13 */
+#define DIO6_PIN  27   /* GPIB 14 */
+#define DIO7_PIN  13   /* GPIB 15 */
+#define DIO8_PIN  12   /* GPIB 16 */
+
+#define IFC_PIN   22   /* GPIB 9  */
+#define NDAC_PIN  21   /* GPIB 8  */
+#define NRFD_PIN  19   /* GPIB 7  */
+#define DAV_PIN   18   /* GPIB 6  */
+#define EOI_PIN   17   /* GPIB 5  */
+
+#define SRQ_PIN   16   /* GPIB 10 */
+#define REN_PIN   23   /* GPIB 17 */
+#define ATN_PIN    4   /* GPIB 11 */
+
+#endif // ESP32_ESP32DEV
+/***** ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ *****/
+/***** ESP32_ESP32DEV LAYOUT DEFINITION *****/
+/********************************************/
+
+
+
+/***********************************************/
+/***** ESP32_LOLIN32_161 LAYOUT DEFINITION *****/
+/***** vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv *****/
+#ifdef ESP32_LOLIN32_161
+
+#define DIO1_PIN  32   /* GPIB 1  */
+#define DIO2_PIN  33   /* GPIB 2  */
+#define DIO3_PIN  25   /* GPIB 3  */
+#define DIO4_PIN  26   /* GPIB 4  */
+#define DIO5_PIN  27   /* GPIB 13 */
+#define DIO6_PIN  14   /* GPIB 14 */
+#define DIO7_PIN  12   /* GPIB 15 */
+#define DIO8_PIN  13   /* GPIB 16 */
+
+#define IFC_PIN   21   /* GPIB 9  */
+#define NDAC_PIN  19   /* GPIB 8  */
+#define NRFD_PIN  23   /* GPIB 7  */
+#define DAV_PIN   18   /* GPIB 6  */
+#define EOI_PIN   17   /* GPIB 5  */
+
+#define SRQ_PIN    4   /* GPIB 10 */
+#define REN_PIN   22   /* GPIB 17 */
+#define ATN_PIN   16   /* GPIB 11 */
+
+#endif // ESP32_LOLIN32_161
+/***** ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ *****/
+/***** ESP32_LOLIN32_161 LAYOUT DEFINITION *****/
+/***********************************************/
+
+
+
+/***********************************************/
+/***** ESP32_S2_161 LAYOUT DEFINITION *****/
+/***** vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv *****/
+#ifdef ESP32_S2_161
+
+#define DIO1_PIN   1   /* GPIB 1  */
+#define DIO2_PIN   2   /* GPIB 2  */
+#define DIO3_PIN   3   /* GPIB 3  */
+#define DIO4_PIN   4   /* GPIB 4  */
+#define DIO5_PIN   5   /* GPIB 13 */
+#define DIO6_PIN   6   /* GPIB 14 */
+#define DIO7_PIN   7   /* GPIB 15 */
+#define DIO8_PIN   8   /* GPIB 16 */
+
+#define IFC_PIN   10   /* GPIB 9  */
+#define NDAC_PIN  11   /* GPIB 8  */
+#define NRFD_PIN  12   /* GPIB 7  */
+#define DAV_PIN   13   /* GPIB 6  */
+#define EOI_PIN   14   /* GPIB 5  */
+
+#define SRQ_PIN   16   /* GPIB 10 */
+#define REN_PIN    9   /* GPIB 17 */
+#define ATN_PIN   15   /* GPIB 11 */
+
+#endif // ESP32_S2_161
+/***** ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ *****/
+/***** ESP32_S2_161 LAYOUT DEFINITION *****/
+/***********************************************/
+
+
+
+
 /*************************************/
 /***** PI PICO LAYOUT DEFINITION *****/
 /***** vvvvvvvvvvvvvvvvvvvvvvvvv *****/