From 5e0a9c504bdf12700d4033ac5f8e56cf9fdf519b Mon Sep 17 00:00:00 2001
From: Todd Herbert <herbert.todd@gmail.com>
Date: Sat, 16 May 2026 05:57:42 +1200
Subject: [PATCH] Change default voltage divider ratio Reflects the official
 faketec spec: two equal 1MOhm resistors

---
 variants/promicro/PromicroBoard.h | 2 +-
 variants/promicro/platformio.ini  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/variants/promicro/PromicroBoard.h b/variants/promicro/PromicroBoard.h
index ba64f4a48..357f8ad42 100644
--- a/variants/promicro/PromicroBoard.h
+++ b/variants/promicro/PromicroBoard.h
@@ -23,7 +23,7 @@
 // - use cli to 'set adc.multiplier' (repeaters / rooms)
 
 #ifndef ADC_MULTIPLIER
-#define ADC_MULTIPLIER (1.667f) // Dependent on voltage divider resistors. Default 1MOhm & 1.5MOhm divider
+#define ADC_MULTIPLIER (2.0f) // Dependent on voltage divider resistors. Default 1MOhm resistors
 #endif
 
 class PromicroBoard : public NRF52BoardDCDC {
diff --git a/variants/promicro/platformio.ini b/variants/promicro/platformio.ini
index 2ea688c3d..93e16dbd6 100644
--- a/variants/promicro/platformio.ini
+++ b/variants/promicro/platformio.ini
@@ -23,7 +23,7 @@ build_flags = ${nrf52_base.build_flags}
   -D ENV_INCLUDE_BMP280=1
   -D ENV_INCLUDE_INA3221=1
   -D ENV_INCLUDE_INA219=1
-  ; -D ADC_MULTIPLIER=1.667f
+  ; -D ADC_MULTIPLIER=2.0f
 build_src_filter = ${nrf52_base.build_src_filter}
   +<helpers/sensors>
   +<../variants/promicro>