diff --git a/Inc/comms.h b/Inc/comms.h
new file mode 100644
index 00000000..e28aba7b
--- /dev/null
+++ b/Inc/comms.h
@@ -0,0 +1,29 @@
+/*
+* This file is part of the hoverboard-firmware-hack project.
+*
+* Copyright (C) 2017-2018 Rene Hopf <renehopf@mac.com>
+* Copyright (C) 2017-2018 Nico Stute <crinq@crinq.de>
+* Copyright (C) 2017-2018 Niklas Fauth <niklas.fauth@kit.fail>
+* Copyright (C) 2018 Jan Kossowski <jan_kossowski@web.de>
+*
+* This program 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 3 of the License, or
+* (at your option) any later version.
+*
+* This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+void setScopeChannel(uint8_t ch, int16_t val);
+void consoleScope();
+void consoleLog(char *message);
+
+
diff --git a/Inc/config.h b/Inc/config.h
index f7e035fc..cb361b2b 100644
--- a/Inc/config.h
+++ b/Inc/config.h
@@ -45,7 +45,7 @@
 
 // ############################### SERIAL DEBUG ###############################
 
-#define DEBUG_SERIAL_USART3         // right sensor board cable, disable if I2C (nunchuck or lcd) is used!
+//#define DEBUG_SERIAL_USART3         // right sensor board cable, disable if I2C (nunchuck or lcd) is used!
 #define DEBUG_BAUD       115200     // UART baud rate
 //#define DEBUG_SERIAL_SERVOTERM
 #define DEBUG_SERIAL_ASCII          // "1:345 2:1337 3:0 4:0 5:0 6:0 7:0 8:0\r\n"
@@ -54,7 +54,7 @@
 
 // ###### CONTROL VIA UART (serial) ######
 //#define CONTROL_SERIAL_USART2       // left sensor board cable, disable if ADC or PPM is used!
-#define CONTROL_BAUD       19200    // control via usart from eg an Arduino or raspberry
+//#define CONTROL_BAUD       19200    // control via usart from eg an Arduino or raspberry
 // for Arduino, use void loop(void){ Serial.write((uint8_t *) &steer, sizeof(steer)); Serial.write((uint8_t *) &speed, sizeof(speed));delay(20); }
 
 // ###### CONTROL VIA RC REMOTE ######
@@ -64,7 +64,7 @@
 
 // ###### CONTROL VIA TWO POTENTIOMETERS ######
 // ADC-calibration to cover the full poti-range: connect potis to left sensor board cable (0 to 3.3V) (do NOT use the red 15V wire in the cable!). see <How to calibrate>. turn the potis to minimum position, write value 1 to ADC1_MIN and value 2 to ADC2_MIN. turn to maximum position and repeat it for ADC?_MAX. make, flash and test it.
-#define CONTROL_ADC                 // use ADC as input. disable DEBUG_SERIAL_USART2!
+//#define CONTROL_ADC                 // use ADC as input. disable DEBUG_SERIAL_USART2!
 #define ADC1_MIN 0                // min ADC1-value while poti at minimum-position (0 - 4095)
 #define ADC1_MAX 4095               // max ADC1-value while poti at maximum-position (0 - 4095)
 #define ADC2_MIN 0                // min ADC2-value while poti at minimum-position (0 - 4095)
@@ -72,7 +72,7 @@
 
 // ###### CONTROL VIA NINTENDO NUNCHUCK ######
 // left sensor board cable. keep cable short, use shielded cable, use ferrits, stabalize voltage in nunchuck, use the right one of the 2 types of nunchucks, add i2c pullups. use original nunchuck. most clones does not work very well.
-//#define CONTROL_NUNCHUCK            // use nunchuck as input. disable DEBUG_SERIAL_USART3!
+#define CONTROL_NUNCHUCK            // use nunchuck as input. disable DEBUG_SERIAL_USART3!
 
 // ############################### DRIVING BEHAVIOR ###############################
 
diff --git a/Src/main.c b/Src/main.c
index b737a77c..7f72a5d6 100644
--- a/Src/main.c
+++ b/Src/main.c
@@ -23,8 +23,11 @@
 #include "defines.h"
 #include "setup.h"
 #include "config.h"
+#include "comms.h"
 //#include "hd44780.h"
 
+#include <stdlib.h>	//for abs()
+
 void SystemClock_Config(void);
 
 extern TIM_HandleTypeDef htim_left;
diff --git a/pinout.png b/pinout.png
index 76372c53..4e980fb7 100644
Binary files a/pinout.png and b/pinout.png differ