diff --git a/Boards.h b/Boards.h
index 6e7150f..14260a2 100644
--- a/Boards.h
+++ b/Boards.h
@@ -632,6 +632,7 @@
   #elif MCU_VARIANT == MCU_NRF52
      #if BOARD_MODEL == BOARD_TECHO
       #define VALIDATE_FIRMWARE false
+      #define HAS_INPUT true
       //#define GPS_BAUD_RATE 115200
       //#define PIN_GPS_TX 41
       //#define PIN_GPS_RX 40
@@ -691,6 +692,9 @@
       const int pin_disp_mosi = 29;
       const int pin_disp_miso = -1;
 
+      #define HAS_BACKLIGHT true
+      const int pin_btn_usr1 = 42;
+      const int pin_backlight = 43;
 
       const int pin_led_rx = LED_BLUE;
       const int pin_led_tx = LED_RED;
diff --git a/Display.h b/Display.h
index 9245d49..e88fbb2 100644
--- a/Display.h
+++ b/Display.h
@@ -94,7 +94,7 @@ void busyCallback(const void* p) {
   // todo: add support for OLED board
   #elif DISPLAY == EINK_BW
   SPIClass displaySPI = SPIClass(NRF_SPIM0, pin_disp_miso, pin_disp_sck, pin_disp_mosi);
-  #define DISP_W 250
+  #define DISP_W 200
   #define DISP_H 122
   #define DISP_ADDR -1
   #endif
@@ -170,9 +170,10 @@ uint8_t online_interfaces = 0;
 
 #if DISPLAY == OLED
 #define WATERFALL_SIZE 46
-#elif (DISP_H == 122 || DISP_H == 200) && (DISPLAY == EINK_BW || DISPLAY == EINK_3C)
+#elif DISP_H == 122 && (DISPLAY == EINK_BW || DISPLAY == EINK_3C)
 #define WATERFALL_SIZE 92
 #else
+#define WATERFALL_SIZE int(DISP_H * 0.75) // default to 75% of the display height
 // add more eink compatible boards here
 #endif
 
@@ -190,6 +191,9 @@ GFXcanvas1 disp_area(64, 64);
 #elif (DISP_H == 122 || DISP_H == 200) && (DISPLAY == EINK_BW || DISPLAY == EINK_3C)
 GFXcanvas1 stat_area(DISP_H, DISP_W/2);
 GFXcanvas1 disp_area(DISP_H, DISP_W/2);
+#else
+GFXcanvas1 stat_area(DISP_H, DISP_W/2);
+GFXcanvas1 disp_area(DISP_H, DISP_W/2);
 #endif
 
 void update_area_positions() {
@@ -361,8 +365,10 @@ void draw_cable_icon(int px, int py) {
   if (cable_state == CABLE_STATE_DISCONNECTED) {
     #if DISPLAY == OLED
         stat_area.drawBitmap(px, py, bm_cable+0*32, 16, 16, SSD1306_WHITE, SSD1306_BLACK);
-    #elif (DISP_H == 122 || DISP_H == 200) && (DISPLAY == EINK_BW || DISPLAY == EINK_3C)
+    #elif DISP_H == 122 && (DISPLAY == EINK_BW || DISPLAY == EINK_3C)
         stat_area.drawBitmap(px, py, bm_cable+0*128, 30, 32, GxEPD_WHITE, GxEPD_BLACK);
+    #else
+        stat_area.drawBitmap(px, py, bm_cable+0*128, 16, 16, GxEPD_WHITE, GxEPD_BLACK);
     #endif
   } else if (cable_state == CABLE_STATE_CONNECTED) {
     #if DISPLAY == OLED
@@ -1147,7 +1153,7 @@ void update_display(bool blank = false) {
       }
       display.clearDisplay();
       update_stat_area();
-      update_disp_area();
+      //update_disp_area();
       display.display();
 
       uint32_t current = millis();
diff --git a/Graphics.h b/Graphics.h
index 47f19bf..668af71 100644
--- a/Graphics.h
+++ b/Graphics.h
@@ -13,7 +13,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-#if DISP_H == UNSCALED_MAX
+#if DISP_H == UNSCALED_MAX || DISP_H == 200
 // use 64px wide graphics
 
 const unsigned char bm_cable [] PROGMEM = {
@@ -408,7 +408,7 @@ const unsigned char bm_dot_sqr [] PROGMEM = {
 	0x80, 0x00, 0x40, 0x00, 0x00, 0x00, 0xaa, 0xd5, 0x40
 };
 
-#elif (DISP_H == 122 || DISP_H == 200)
+#elif DISP_H == 122
 // use 122px wide graphics
 
 const unsigned char bm_bt [] PROGMEM = {
diff --git a/RNode_Firmware_CE.ino b/RNode_Firmware_CE.ino
index a82e70e..b0da1a9 100644
--- a/RNode_Firmware_CE.ino
+++ b/RNode_Firmware_CE.ino
@@ -1297,6 +1297,11 @@ void loop() {
 
   #if HAS_INPUT
     input_read();
+    #if HAS_BACKLIGHT
+    if (button_pressed()) {
+      digitalWrite(pin_backlight, !digitalRead(pin_backlight));
+    }
+    #endif
   #endif
 }
 
diff --git a/Utilities.h b/Utilities.h
index 0424984..45ba1ed 100644
--- a/Utilities.h
+++ b/Utilities.h
@@ -1537,4 +1537,4 @@ void unlock_rom() {
 	eeprom_erase();
 }
 
-#include "src/misc/FIFOBuffer.h"
+#include "src/misc/FIFOBuffer.h"
\ No newline at end of file