
SunTracker_BLE
Dependencies: BLE_API X_NUCLEO_6180XA1 X_NUCLEO_IDB0XA1 X_NUCLEO_IHM01A1 X_NUCLEO_IKS01A1 mbed
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Overview
The SunTracker is a demo application running on ST Nucleo-F401RE stacking a set of ST X-NUCLEO expansion boards.
Main features provided are:
- A solar panel follows the light source, orienting the panel in order to achieve the best panel efficiency.
- Orientation is controlled thanks to a couple of VL6180X FlightSense light sensors mounted on a X-NUCLEO-6180XA1 expansion board and driven by X-NUCLEO-IHM01A1 controlled stepper motor acting as actuator to orientate the panel.
- The system features a progressive control on the stepper motor in order to modulate the panel rotation speed according to the light angle.
- The application is also able to control the panel productivity reading the panel voltage through an ADC and proving feedback on the local display.
- A manual orientation is possible by using the accelerometer on a X-NUCLEO-IKS01A1 expansion board that, according on board tilt, controls the speed and the rotate direction.
- A remote control is available using a X-NUCLEO-IDB04A1 or a X-NUCLEO-IDB05A1 Bluetooth Low Energy expansion board. Remote control software is here.
Working Status
- SunTracker has 3 working status visible on FlightSense display and switchable by pressing the User Button:
Status 0 (Idle)
- Motor: Free Turning
- Display: Waiting for User Button
Status 1
- Motor: Driven by Light
- Display: Direction and Light Intensity = Direction and Motor Speed
Status 2
- Motor: Driven by Light
- Display: Solar Panel Efficiency
Status 3
- Motor: Driven by Accelerometer
- Display: Direction and Accelerometer Intensity
Server Startup
- When you plug the power supply, the word ‘PUSH’ is shown on display.
- You can manually rotate the structure to assign the ‘Zero Point’. Then press the User Button to launch the application.
- The display will show this status, which means that the structureis oriented to maximize the efficiency of the solar panel.
- If there is a light displacement, the structure will rotate, left or right,to follow the light source and on display is shown the direction and the speed.
- You can press the User Button to show the panel efficiencywith 4 digits that represent the range from 0v (0000) to 3,3v (3300).
- Further pressing the User Button you will manual rotate the panel by tilt the Server or Client accelerometer depending by BLE connection.
Client Startup
- The Client application can remotely control the User Button and the Accelerometer functions.
- Power on the Client AFTER the Server, it will automatically search for the SunTracker and will establish a BLE connection.
- The Green Led on Nucleo Client board will be powered on.
Rotation Features
- It has been implemented a block of rotation to avoid cables twist.
- The blocking point can be set in the firmware by changing a constant.
- You can manually rotate the structure to assign the ‘Zero Point’ before press the User Button to launch the application.
- The system features a progressive control on the stepper motor in order to modulate the rotation speed according to the light or accelerometer angle.
List of Components
SERVER SunTracker_BLE
- Nucleo-F401RE platform using a STM32F401RET6 microcontroller.
- X-NUCLEO-IHM01A1 - Stepper motor driver board based on the EasySPIN L6474.
- X-NUCLEO-6180XA1 - 3-in-1 proximity and ambient light sensor board based on ST FlightSense technology.
- VL6180X-SATEL - Satellite boards compatible with X-NUCLEO-6180XA1 board.
- X-NUCLEO-IKS01A1 - Motion MEMS and environmental sensor board.
- X-NUCLEO-IDB04A1 or X-NUCLEO-IDB05A1 - Bluetooth Low Energy Bluetooth low energy evaluation board.
- Stepper Motor 400’’ (Part Number 5350401) - To orientate the Mechanical Structure.
- Solar Panel 0.446w (Part Number 0194127) - To capture sunlight and generate electrical current.
- Power Supply 12v (Part Number 7262993) - To provide power supply at the Stepper Motor.
- Flat Cable 6 ways (Part Number 1807010) - To plug VL6180X-SATEL with X-NUCLEO-6180XA1 (60cm length each x2).
- Cable Connector (Part Number 6737694) - To plug the Flat Cable (x4).
- Power Connector (Part Number 0487842) - To provide Power Supply to X-NUCLEO-IHM01A1.
CLIENT SunTracker_BLE_Remote
- Nucleo-F401RE platform using a STM32F401RET6 microcontroller.
- X-NUCLEO-IKS01A1 - Motion MEMS and environmental sensor board.
- X-NUCLEO-IDB04A1 or X-NUCLEO-IDB05A1- Bluetooth Low Energy Bluetooth low energy evaluation board.
MECHANICAL STRUCTURE
Find here the STL files to print with a 3D printer.
FLAT CABLE ASSEMBLY
HARDWARE SETUP
Nucleo ADC + Solar Panel
Connect Solar Panel cables to Nucleo Morpho PC_3 (white) and Nucleo Morpho GND (black). Connect a capacitor 10uF between PC_3 and GND to stabilize its voltage value shown on display.
EasySpin (L6474) + BLE
Hardware conflict between EasySpin DIR1 and BLE Reset, both on same Arduino Pin PA_8. Disconnect PA_8 between EasySpin and Nucleo by fold EasySpin Pin. PB_2 has been configured as EasySpin DIR1 in the firmware .Connect Nucleo Morpho PB_2 to FlightSense Arduino PA_8 by a wire.
FlightSense Satellites
In case of instability with I2C due to long flat cables, solder 4 SMD capacitors 47pF on FlightSense board in parallel between R15, R16, R17, R18 and plug 2 capacitors 15pF between FlightSense Arduino PB_8 and PB_9 to GND pin to cut-off noises over 720 KHz.
Arduino & Morpho Pinout
Diff: MotionFX_Manager.h
- Revision:
- 4:1d3d071a4c2c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MotionFX_Manager.h Tue Jan 26 13:29:53 2016 +0000 @@ -0,0 +1,140 @@ +/** + ****************************************************************************** + * @file MotionFX_Manager.h + * @author Central Lab + * @version V1.1.0 + * @date 20-Jannuary-2015 + * @brief This file includes sensor fusion interface functions + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> + * + * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); + * You may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.st.com/software_license_agreement_liberty_v2 + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +#ifndef _MOTIONFX_MANAGER_H_ +#define _MOTIONFX_MANAGER_H_ + +#ifdef __cplusplus + extern "C" { +#endif + +//#define USE_SENSOR_FUSION_LIB /** uncomment only if STM32_OSX_MotionFX_Library is linked and licensed **/ + +#include <cstdio> +#include <stdint.h> +#include <stdio.h> + +#ifdef USE_SENSOR_FUSION_LIB +#include "osx_motion_fx.h" +#else + +#define NUM_AXES 3 +#define QNUM_AXES 4 + +typedef struct +{ + float mag[NUM_AXES]; /* calibrated mag [uT]/50 */ + float acc[NUM_AXES]; /* acc [g] */ + float gyro[NUM_AXES]; /* gyro [dps] */ +} osxMFX_input; + +typedef struct +{ + float rotation_9X[NUM_AXES]; /* 9 axes yaw, pitch and roll */ + float quaternion_9X[QNUM_AXES]; /* 9 axes quaternion */ + float gravity_9X[NUM_AXES]; /* 9 axes device frame gravity */ + float linear_acceleration_9X[NUM_AXES]; /* 9 axes device frame linear acceleration */ + float heading_9X; /* 9 axes heading */ + float rotation_6X[NUM_AXES]; /* 6 axes yaw, pitch and roll */ + float quaternion_6X[QNUM_AXES]; /* 6 axes quaternion */ + float gravity_6X[NUM_AXES]; /* 6 axes device frame gravity */ + float linear_acceleration_6X[NUM_AXES]; /* 6 axes device frame linear acceleration */ + float heading_6X; /* 6 axes heading */ +} osxMFX_output; + +typedef struct +{ + signed short magOffX; /* X axis Offset */ + signed short magOffY; /* Y axis Offset */ + signed short magOffZ; /* Z axis Offset */ + float magGainX; /* X axis Gain */ + float magGainY; /* Y axis Gain */ + float magGainZ; /* Z axis Gain */ + float expMagVect; /* expected magnetic field */ +} osxMFX_calibFactor; + +unsigned char osx_MotionFX_compass_isCalibrated(void); +void osx_MotionFX_compass_forceReCalibration(void); +void osx_MotionFX_compass_saveAcc(int acc_x, int acc_y, int acc_z); +void osx_MotionFX_compass_saveMag(int mag_x, int mag_y, int mag_z); +int osx_MotionFX_compass_run(void); +void osx_MotionFX_setCalibrationData(osxMFX_calibFactor* CalibrationData); +void osx_MotionFX_getCalibrationData(osxMFX_calibFactor* CalibrationData); + +#endif + + +typedef struct { + int32_t AXIS_X; + int32_t AXIS_Y; + int32_t AXIS_Z; +} AxesRaw_t; + +/* Exported functions ------------------------------------------------------- */ + +bool MotionFX_manager_init(bool DS3_OnBoard, osxMFX_calibFactor & magOffset); +void MotionFX_manager_run(AxesRaw_t *ACC_Value, AxesRaw_t *GYR_Value, AxesRaw_t *MAG_Value, osxMFX_calibFactor & magOffset); +void MotionFX_manager_start_6X(void); +void MotionFX_manager_stop_6X(void); +void MotionFX_manager_start_9X(void); +void MotionFX_manager_stop_9X(void); + +void MotionFX_manager_setDependencies(uint8_t sf, int32_t sensorMask); +void MotionFX_manager_resetDependencies(uint8_t sf, int32_t sensorMask); +uint32_t MotionFX_manager_getDependencies(uint8_t sf); + +osxMFX_output* MotionFX_manager_getDataOUT(void); +osxMFX_input* MotionFX_manager_getDataIN(void); + +/* Exported constants --------------------------------------------------------*/ + +/* Delta time mSec for Deltafusion */ +#define DELTATIMESENSORFUSION 0.01 + +#ifdef __cplusplus +} +#endif + +#endif //_MOTIONFX_MANAGER_H_ + +/******************* (C) COPYRIGHT 2015 STMicroelectronics *****END OF FILE****/