diff --git a/test/emul/Arduino.cpp b/test/emul/Arduino.cpp
index 563dd466..fab6b53c 100644
--- a/test/emul/Arduino.cpp
+++ b/test/emul/Arduino.cpp
@@ -15,6 +15,7 @@ int digitalRead(uint8_t pin) {
   return 0;
 }
 void digitalWrite(uint8_t pin, uint8_t val) {}
+
 unsigned long micros() {
   return 0;
 }
@@ -24,22 +25,11 @@ int max(int a, int b) {
   return (a > b) ? a : b;
 }
 
-// Mock implementation for OBD
-#include "../../Software/src/communication/can/obd.h"
-void handle_obd_frame(CAN_frame& frame) {
-  (void)frame;
+bool ledcAttachChannel(uint8_t pin, uint32_t freq, uint8_t resolution, int8_t channel) {
+  return true;
 }
-void transmit_obd_can_frame(unsigned int address, int interface, bool canFD) {
-  (void)interface;
-}
-
-void start_bms_reset() {}
-
-#include "../../Software/src/communication/rs485/comm_rs485.h"
-
-// Mock implementation
-void register_receiver(Rs485Receiver* receiver) {
-  (void)receiver;  // Silence unused parameter warning
+bool ledcWrite(uint8_t pin, uint32_t duty) {
+  return true;
 }
 
 ESPClass ESP;
diff --git a/test/emul/Arduino.h b/test/emul/Arduino.h
index 0bcf55b5..257d9ac7 100644
--- a/test/emul/Arduino.h
+++ b/test/emul/Arduino.h
@@ -121,6 +121,9 @@ void delay(unsigned long ms);
 void delayMicroseconds(unsigned long us);
 int max(int a, int b);
 
+bool ledcAttachChannel(uint8_t pin, uint32_t freq, uint8_t resolution, int8_t channel);
+bool ledcWrite(uint8_t pin, uint32_t duty);
+
 class ESPClass {
  public:
   size_t getFlashChipSize() {
diff --git a/test/emul/can.cpp b/test/emul/can.cpp
index caabf015..bf4861b6 100644
--- a/test/emul/can.cpp
+++ b/test/emul/can.cpp
@@ -18,3 +18,5 @@ char const* getCANInterfaceName(CAN_Interface) {
 }
 
 void register_transmitter(Transmitter* transmitter) {}
+
+void dump_can_frame(CAN_frame& frame, frameDirection msgDir) {}