From 50e9456f28136944949d2d4a064221b76dab564b Mon Sep 17 00:00:00 2001
From: Snayler <11491485+Snayler@users.noreply.github.com>
Date: Fri, 27 Mar 2026 01:17:39 +0000
Subject: [PATCH 1/3] Define ADC_MULTIPLIER for adjustable ADC calculation

---
 variants/heltec_v3/HeltecV3Board.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/variants/heltec_v3/HeltecV3Board.h b/variants/heltec_v3/HeltecV3Board.h
index afdaf6398a..94e93ca43e 100644
--- a/variants/heltec_v3/HeltecV3Board.h
+++ b/variants/heltec_v3/HeltecV3Board.h
@@ -11,6 +11,9 @@
 #ifndef PIN_ADC_CTRL              // set in platformio.ini for Heltec Wireless Tracker (2)
   #define  PIN_ADC_CTRL    37
 #endif
+#ifndef ADC_MULTIPLIER  //default ADC multiplier
+  #define ADC_MULTIPLIER 5.42
+#endif
 #define  PIN_ADC_CTRL_ACTIVE    LOW
 #define  PIN_ADC_CTRL_INACTIVE  HIGH
 
@@ -88,7 +91,7 @@ class HeltecV3Board : public ESP32Board {
 
     digitalWrite(PIN_ADC_CTRL, !adc_active_state);
 
-    return (5.42 * (3.3 / 1024.0) * raw) * 1000;
+    return (ADC_MULTIPLIER * (3.3 / 1024.0) * raw) * 1000;
   }
 
   const char* getManufacturerName() const override {

From 4b25f0a3df6cec029f7aa0f276f0e21abf1c8a45 Mon Sep 17 00:00:00 2001
From: Snayler <11491485+Snayler@users.noreply.github.com>
Date: Fri, 27 Mar 2026 01:19:46 +0000
Subject: [PATCH 2/3] Add correct ADC_MULTIPLIER definition to Heltec Wireless
 Paper

---
 variants/heltec_wireless_paper/platformio.ini | 1 +
 1 file changed, 1 insertion(+)

diff --git a/variants/heltec_wireless_paper/platformio.ini b/variants/heltec_wireless_paper/platformio.ini
index ff554ab8aa..d6f43d75f8 100644
--- a/variants/heltec_wireless_paper/platformio.ini
+++ b/variants/heltec_wireless_paper/platformio.ini
@@ -22,6 +22,7 @@ build_flags =
   ;-D PIN_BOARD_SCL=18               ; same GPIO as P_LORA_TX_LED
   -D PIN_USER_BTN=0
   -D PIN_VEXT_EN=45
+  -D ADC_MULTIPLIER=8.4
   -D PIN_VBAT_READ=20
   -D PIN_ADC_CTRL=19
   -D SX126X_DIO2_AS_RF_SWITCH=true

From bfdd5fb571131f4fda9a8939e7a6fe86d2567e7b Mon Sep 17 00:00:00 2001
From: Snayler <11491485+Snayler@users.noreply.github.com>
Date: Fri, 27 Mar 2026 01:23:04 +0000
Subject: [PATCH 3/3] Fix formatting of ADC_MULTIPLIER definition

---
 variants/heltec_v3/HeltecV3Board.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/variants/heltec_v3/HeltecV3Board.h b/variants/heltec_v3/HeltecV3Board.h
index 94e93ca43e..ba22a7f2b9 100644
--- a/variants/heltec_v3/HeltecV3Board.h
+++ b/variants/heltec_v3/HeltecV3Board.h
@@ -11,7 +11,7 @@
 #ifndef PIN_ADC_CTRL              // set in platformio.ini for Heltec Wireless Tracker (2)
   #define  PIN_ADC_CTRL    37
 #endif
-#ifndef ADC_MULTIPLIER  //default ADC multiplier
+#ifndef ADC_MULTIPLIER            //default ADC multiplier
   #define ADC_MULTIPLIER 5.42
 #endif
 #define  PIN_ADC_CTRL_ACTIVE    LOW