diff --git a/OpticalChannelTester/Config.h b/OpticalChannelTester/Config.h
index c10efe2..d6aa8f3 100644
--- a/OpticalChannelTester/Config.h
+++ b/OpticalChannelTester/Config.h
@@ -15,8 +15,10 @@ constexpr uint8_t GPIO_RX = 4;
 constexpr uint8_t GPIO_BUTTON_MODE = 0;
 constexpr uint8_t GPIO_BUTTON_START = 1;
 #else
-constexpr uint8_t GPIO_BUTTON_MODE = 1;
-constexpr uint8_t GPIO_BUTTON_START = 0;
+constexpr uint8_t GPIO_BUTTON_MODE = 20;
+constexpr uint8_t GPIO_BUTTON_START = 10;
+constexpr uint8_t GPIO_VBAT = 2;
+constexpr uint8_t GPIO_ANALOG_RX = 0;
 #endif
 constexpr uint8_t GPIO_SDA = 6;
 constexpr uint8_t GPIO_SCL = 7;
@@ -34,10 +36,12 @@ constexpr uint8_t GPIO_SCL = 9;
 // contacts as on the C3 SuperMini. Signals therefore follow header position.
 constexpr uint8_t GPIO_PWM = 12;
 constexpr uint8_t GPIO_RX = 13;
-constexpr uint8_t GPIO_BUTTON_MODE = 10;
-constexpr uint8_t GPIO_BUTTON_START = 9;
+constexpr uint8_t GPIO_BUTTON_MODE = 5;
+constexpr uint8_t GPIO_BUTTON_START = 4;
 constexpr uint8_t GPIO_SDA = 44;
 constexpr uint8_t GPIO_SCL = 1;
+constexpr uint8_t GPIO_VBAT = 11;
+constexpr uint8_t GPIO_ANALOG_RX = 9;
 #endif
 #else
 #error "Only ESP32-C3 and ESP32-S3 are supported"
diff --git a/PCB/OptoTest.PcbDoc b/PCB/OptoTest.PcbDoc
index fca8432..7e04fdd 100644
Binary files a/PCB/OptoTest.PcbDoc and b/PCB/OptoTest.PcbDoc differ
diff --git a/README.md b/README.md
index 5b95378..5761509 100644
--- a/README.md
+++ b/README.md
@@ -61,8 +61,10 @@ Arduino sketch находится в каталоге `OpticalChannelTester`:
 |---|---:|---:|
 | PWM output | GPIO 3 | GPIO 12 |
 | Optical RX input | GPIO 4 | GPIO 13 |
-| START | GPIO 0 | GPIO 9 |
-| MODE | GPIO 1 | GPIO 10 |
+| START | GPIO 10 | GPIO 4 |
+| MODE | GPIO 20 | GPIO 5 |
+| VBAT | GPIO 2 | GPIO 11 |
+| Analog RX | GPIO 0 | GPIO 9 |
 | OLED SDA | GPIO 6 | GPIO 44 |
 | OLED SCL | GPIO 7 | GPIO 1 |