diff --git a/conf/autopilot/subsystems/rotorcraft/fdm_nps.makefile b/conf/autopilot/subsystems/rotorcraft/fdm_nps.makefile
index e64d5c6d07..f58cbfcdd1 100644
--- a/conf/autopilot/subsystems/rotorcraft/fdm_nps.makefile
+++ b/conf/autopilot/subsystems/rotorcraft/fdm_nps.makefile
@@ -65,7 +65,6 @@ sim.srcs += math/pprz_trig_int.c             \
 
 sim.CFLAGS += -DBOARD_CONFIG=$(BOARD_CFG)
 
-sim.srcs   += $(SRC_BOOZ_SIM)/booz2_unsimulated_peripherals.c
 sim.srcs   += firmwares/rotorcraft/main.c
 sim.srcs   += mcu.c
 sim.srcs   += $(SRC_ARCH)/mcu_arch.c
@@ -90,13 +89,16 @@ sim.srcs += $(SRC_FIRMWARE)/datalink.c
 #
 
 
-sim.CFLAGS += -DBOOZ2_ANALOG_BARO_LED=2 -DBOOZ2_ANALOG_BARO_PERIOD='SYS_TICS_OF_SEC((1./100.))'
+sim.CFLAGS += -DROTORCRAFT_BARO_LED=2
 sim.srcs += $(SRC_BOARD)/baro_board.c
 
-sim.CFLAGS += -DBOOZ2_ANALOG_BATTERY_PERIOD='SYS_TICS_OF_SEC((1./10.))'
-sim.srcs += $(SRC_FIRMWARE)/battery.c
+sim.CFLAGS += -DUSE_ADC
+sim.srcs   += $(SRC_ARCH)/mcu_periph/adc_arch.c
+sim.srcs   += subsystems/electrical.c
+# baro has variable offset amplifier on booz board
+#sim.CFLAGS += -DUSE_DAC
+#sim.srcs   += $(SRC_ARCH)/mcu_periph/dac_arch.c
 
-sim.srcs += $(SRC_BOOZ)/booz2_analog.c $(SRC_BOOZ_SIM)/booz2_analog_hw.c
 
 #sim.CFLAGS += -DIMU_TYPE_H=\"imu/imu_b2.h\"
 #sim.CFLAGS += -DIMU_B2_VERSION_1_1
diff --git a/sw/airborne/booz/arch/sim/booz2_unsimulated_peripherals.c b/sw/airborne/booz/arch/sim/booz2_unsimulated_peripherals.c
deleted file mode 100644
index 5a86889e63..0000000000
--- a/sw/airborne/booz/arch/sim/booz2_unsimulated_peripherals.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * $Id$
- *
- * Copyright (C) 2008-2009 Antoine Drouin <poinix@gmail.com>
- *
- * This file is part of paparazzi.
- *
- * paparazzi is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * paparazzi is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with paparazzi; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include "mcu_periph/uart.h"
-//#include "mcu_periph/i2c.h"
-
-void uart0_init( void ) {}
-void uart1_init( void ) {}
-
-//void i2c0_hw_init( void ) {}
-//void i2c1_hw_init( void ) {}
diff --git a/sw/simulator/nps/nps_autopilot_booz.c b/sw/simulator/nps/nps_autopilot_booz.c
index 88a524755d..0d085d547a 100644
--- a/sw/simulator/nps/nps_autopilot_booz.c
+++ b/sw/simulator/nps/nps_autopilot_booz.c
@@ -7,7 +7,7 @@
 #include "subsystems/imu.h"
 #include "subsystems/sensors/baro.h"
 #include "baro_board.h"
-#include "firmwares/rotorcraft/battery.h"
+#include "subsystems/electrical.h"
 
 #include "actuators/supervision.h"
 
@@ -25,9 +25,9 @@ void nps_autopilot_init(enum NpsRadioControlType type_rc, int num_rc_script, cha
   main_init();
 
 #ifdef MAX_BAT_LEVEL
-  battery_voltage = MAX_BAT_LEVEL * 10;
+  electrical.vsupply = MAX_BAT_LEVEL * 10;
 #else
-  battery_voltage = 111;
+  electrical.vsupply = 111;
 #endif
 
 }