diff --git a/boards/heltec_t114.json b/boards/heltec_t114.json
index 6df7266d..86f72e73 100644
--- a/boards/heltec_t114.json
+++ b/boards/heltec_t114.json
@@ -34,7 +34,8 @@
   ],
   "debug": {
     "jlink_device": "nRF52840_xxAA",
-    "svd_path": "nrf52840.svd"
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
   },
   "frameworks": [
     "arduino"
diff --git a/boards/promicro_nrf52840.json b/boards/promicro_nrf52840.json
index 346f0f26..a428ffde 100644
--- a/boards/promicro_nrf52840.json
+++ b/boards/promicro_nrf52840.json
@@ -8,7 +8,7 @@
       "extra_flags": "-DARDUINO_NRF52840_FEATHER -DNRF52840_XXAA",
       "f_cpu": "64000000L",
       "hwids": [
-        [ 
+        [
           "0x239A",
           "0x00B3"
         ],
@@ -51,7 +51,8 @@
     ],
     "debug": {
       "jlink_device": "nRF52840_xxAA",
-      "svd_path": "nrf52840.svd"
+      "svd_path": "nrf52840.svd",
+      "openocd_target": "nrf52.cfg"
     },
     "frameworks": [
       "arduino",
diff --git a/boards/t-echo.json b/boards/t-echo.json
index 5c2703a3..8deea1bc 100644
--- a/boards/t-echo.json
+++ b/boards/t-echo.json
@@ -37,7 +37,8 @@
     "onboard_tools": [
       "jlink"
     ],
-    "svd_path": "nrf52840.svd"
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
   },
   "frameworks": [
     "arduino"
diff --git a/boards/thinknode_m1.json b/boards/thinknode_m1.json
index 0f313063..9f486285 100644
--- a/boards/thinknode_m1.json
+++ b/boards/thinknode_m1.json
@@ -45,7 +45,8 @@
     "onboard_tools": [
       "jlink"
     ],
-    "svd_path": "nrf52840.svd"
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
   },
   "frameworks": [
     "arduino"
diff --git a/boards/tracker-t1000-e.json b/boards/tracker-t1000-e.json
index 2be716e2..fc740ac5 100644
--- a/boards/tracker-t1000-e.json
+++ b/boards/tracker-t1000-e.json
@@ -32,7 +32,8 @@
   "connectivity": ["bluetooth"],
   "debug": {
     "jlink_device": "nRF52840_xxAA",
-    "svd_path": "nrf52840.svd"
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
   },
   "frameworks": ["arduino"],
   "name": "Seeed T1000-E",
diff --git a/src/helpers/ui/GxEPDDisplay.cpp b/src/helpers/ui/GxEPDDisplay.cpp
index 57a96074..7faaf2c3 100644
--- a/src/helpers/ui/GxEPDDisplay.cpp
+++ b/src/helpers/ui/GxEPDDisplay.cpp
@@ -7,10 +7,10 @@
 
 #ifdef TECHO_ZOOM
   #define SCALE_X   (1.5625f * 1.5f)   //  200 / 128  (with 1.5 scale)
-  #define SCALE_Y   (2.9687f * 1.5f)   //  190 / 64   (with 1.5 scale)
+  #define SCALE_Y   (1.5625f * 1.5f)   //  200 / 128  (with 1.5 scale)
 #else
   #define SCALE_X   1.5625f   //  200 / 128
-  #define SCALE_Y   2.9687f   //  190 / 64
+  #define SCALE_Y   1.5625f   //  200 / 128
 #endif
 
 bool GxEPDDisplay::begin() {
diff --git a/src/helpers/ui/GxEPDDisplay.h b/src/helpers/ui/GxEPDDisplay.h
index 88aecaae..01c900ac 100644
--- a/src/helpers/ui/GxEPDDisplay.h
+++ b/src/helpers/ui/GxEPDDisplay.h
@@ -14,11 +14,11 @@
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 #define GxEPD2_DRIVER_CLASS GxEPD2_150_BN  // DEPG0150BN 200x200, SSD1681, (FPC8101), TTGO T5 V2.4.1
 
-#include <epd/GxEPD2_150_BN.h>  // 1.54" b/w 
+#include <epd/GxEPD2_150_BN.h>  // 1.54" b/w
 
 #include "DisplayDriver.h"
 
-//GxEPD2_BW<GxEPD2_150_BN, 200> display(GxEPD2_150_BN(DISP_CS, DISP_DC, DISP_RST, DISP_BUSY)); // DEPG0150BN 200x200, SSD1681, TTGO T5 V2.4.1                 
+//GxEPD2_BW<GxEPD2_150_BN, 200> display(GxEPD2_150_BN(DISP_CS, DISP_DC, DISP_RST, DISP_BUSY)); // DEPG0150BN 200x200, SSD1681, TTGO T5 V2.4.1
 
 
 class GxEPDDisplay : public DisplayDriver {
@@ -29,12 +29,12 @@ class GxEPDDisplay : public DisplayDriver {
 
 public:
   // there is a margin in y...
-  GxEPDDisplay() : DisplayDriver(128, 64), display(GxEPD2_150_BN(DISP_CS, DISP_DC, DISP_RST, DISP_BUSY)) { 
+  GxEPDDisplay() : DisplayDriver(128, 128), display(GxEPD2_150_BN(DISP_CS, DISP_DC, DISP_RST, DISP_BUSY)) {
   }
 
   bool begin();
 
-  bool isOn() override {return _isOn;}; 
+  bool isOn() override {return _isOn;};
   void turnOn() override;
   void turnOff() override;
   void clear() override;