diff --git a/src/helpers/ui/ST7735Display.cpp b/src/helpers/ui/ST7735Display.cpp
index 45fd2a39..15d41407 100644
--- a/src/helpers/ui/ST7735Display.cpp
+++ b/src/helpers/ui/ST7735Display.cpp
@@ -118,6 +118,13 @@ void ST7735Display::drawXbm(int x, int y, const uint8_t* bits, int w, int h) {
   display.drawBitmap(x, y, bits, w, h, _color);
 }
 
+uint16_t ST7735Display::getTextWidth(const char* str) {
+  int16_t x1, y1;
+  uint16_t w, h;
+  display.getTextBounds(str, 0, 0, &x1, &y1, &w, &h);
+  return w;
+}
+
 void ST7735Display::endFrame() {
   // display.display();
 }
diff --git a/src/helpers/ui/ST7735Display.h b/src/helpers/ui/ST7735Display.h
index d456b477..efde213d 100644
--- a/src/helpers/ui/ST7735Display.h
+++ b/src/helpers/ui/ST7735Display.h
@@ -32,5 +32,6 @@ public:
   void fillRect(int x, int y, int w, int h) override;
   void drawRect(int x, int y, int w, int h) override;
   void drawXbm(int x, int y, const uint8_t* bits, int w, int h) override;
+  uint16_t getTextWidth(const char* str) override;
   void endFrame() override;
 };
diff --git a/variants/heltec_v3/platformio.ini b/variants/heltec_v3/platformio.ini
index 82645b4a..47a23754 100644
--- a/variants/heltec_v3/platformio.ini
+++ b/variants/heltec_v3/platformio.ini
@@ -196,6 +196,8 @@ build_flags =
  ; -D ARDUINO_USB_CDC_ON_BOOT=1      ; need for debugging
   -D ST7735
   -D PIN_ADC_CTRL=2                     ; redefines the V3 pin
+  -D PIN_BOARD_SDA=45
+  -D PIN_BOARD_SCL=46
   -D DISPLAY_ROTATION=1
   -D DISPLAY_CLASS=ST7735Display
   -D USE_PIN_TFT=1