Automatic Light Tracking Hybrid Equipment

Polish Dual Axis-solar Radiation Control Module

Radiation Tracking is superior to any GPS or Time Tracking !

Download: The Latest Australian REI User Manual

We Recommend Downloading & Printing the User Manual.

Page last updated:  09-Jan-2024

DART ControllerWe are pleased to bring you the 12~24V Polish Made, Dual Axis-solar Radiation Tracking (DART) Controller that Generate upwards of 15% more energy than GPS Tracking, and up-to 60% more Energy than any Fixed or Tilted Solar Racking per year, largely due to GPS Not being able to read the Brightness/Radiation of the Sky, like on a Cloudy day!

A small affordable item that is commonly overlooked, that recovers the few hundred spent, with additional Power Generated in a very short time !

Our software can now be setup to WiFi control up to 30 DART Units if used in Solar Farm & within 300mt distance.

------ Basic Set-up below may have change ------

Device states and reactions of button functions;

  1. Automatic mode: The controller performs measurements every TX for the EW axis and TY for the SN axis and corrects the tracker's position with the accuracy of V1.
    1. "C" button held down for a long time will start the wind protection procedure, this function allows you to lay the work surface flat with one button without having to hold it for the entire duration of the movement.
    2. "M" button pressed for a short time (1s). switches the device to manual mode.
    3. Long (>5s) "M" button switches the device into the configuration mode.
    4. The E W S N buttons remain inactive.
  2. Manual mode: The controller responds to buttons E W S N and turns on the motors in selected directions.
    1. Press button C for a short time to switch back to Automatic mode.
    2. The M button turns the fan on.
    3. buttons E W S N turn on the motors in the appropriate directions.
  3. Configuration mode: The controller displays configuration parameters so that they can be modified by the user.
    1. button C pressed for a short time saves the settings and switches the device to Automatic mode.
    2. the M button remains inactive.
    3. E W buttons are used to move to the previous / next parameter.
    4. S N buttons are used to decrease / increase the parameter value.

Buttons and their functions;

  1. C - Confirm parameters / Automatic
    1. (automatic mode) starting the wind protection procedure (hold for 3s)
    2. (manual mode) starting the automatic mode
    3. (configuration mode) exit from configuration with saving parameters
  2. M - Manual
    1. (automatic mode) enter into configuration (hold for 4s)
    2. (automatic mode) entering the manual mode (short pressing the button)
    3. (manual mode) turn the fan on
  3. E - direction or scroll
    1. (manual mode) start the motor to the east
    2. (configuration mode) scrolls parameters left
  4. W - direction or scroll
    1. (manual mode) start the motor to the west
    2. (configuration mode) scrolls parameters right in configuration mode
  5. S - direction or decrease in value
    1. (manual mode) start the motor south
    2. (configuration mode) decreasing the parameter value in configuration mode
  6. N - direction or value increase
    1. (manual mode) start the motor towards the north
    2. (configuration mode) increasing the value of a parameter in the configuration mode

Configuration parameters (ranges);

V1 - (0.1-2.50) Sun Tracking Accuracy (0.10). If the difference in readings between the E and W or S and N sensors is greater than the indicated value, the tracker corrects its position in relation to the light radiation.

V2 - (0.0-2.50) Wind Force at which the controller will pass successively through the T3~T6 times to the safe setting (0.90), this parameter also restarts the T2 counter if the stacker is already blocked, thanks to which the tracker remains in a safe position until the wind calms down completely.

V3 - (0.0-2.50) the smallest light sensor reading value at which the solar radiation strength is on the border between day and night (default 0.80).

V4 - (0.0-2.50) cloudiness threshold at which the controller slows down the tracking of the sun (default 1.70), it prevents the tracker from reacting to radiation reflected from the East during normal operation in partially cloudy conditions.

TX - (0-99) time interval after which the strength of the East-West sun is measured (default 30).

TY - (0-99) time interval after which the North-South sun strength is measured (default 50).

T1 - (0 - 9800) waiting time for the Sun after a temporary decrease in value read from one of the sensors (default 1000).

T2 - (0 - 9800) time the remains blocked after detecting the wind. (After going through T3~T6 times) (default 600)

T3 - (0 - 9800) time the motor will turn to the East direction after detecting High Wind (E=000).

T4 - (0 - 9800) time the motor will turn to the West direction after detecting High Wind (W=000).

T5 - (0 - 9800) time the motor will turn to the South direction after detecting High Wind (S=400).

T6 - (0 - 9800) time the motor will turn to the North direction after detecting High Wind (N=000).

T7 - (0 - 9800) Waiting time for complete darkness, i.e. all sensors show readings below the V3 value for a long time after the sun disappears (after this time the controller will start returning according to the settings T8~T11 (default 4500)

T8 - (0 - 9800) NEW Day Go North (default 000).

T9 - (0 - 9800) NEW Day Go South (default 400).

T10 - (0 - 9800) NEW Day Go West (default 000).

T11 - (0 - 9800) NEW Day Go East (default 800).

TRCv - Tracker version (3 by default).

0 - Single axis tilting E~W axis.

1 - Two Single-axis tracking, E~W axis + N~S motor used as second single axis tracker (two light sensors needed).

2 - Two-axis tracker tilting / pivoting E~W and N~S axis (using two Linear Actuators).

3 - Two-axis Rotation, E~W axis, and Tilt N~S axis (using two Slew Bearings).

DRV - (0 to 5) motor driver type.

0 - DC motor, soft start, Normally Closed limit switch (Not recommended, can go Past Stop & unable to Return).

1 - DC motor, soft start, Normally Open limit switch (Not recommended, can go Past Stop & unable to Return).

2 - DC motor, hard start, Normally Closed limit switch (recommended to use).

3 - DC motor, hard start, Normally Open limit switch (recommended to use).

4 - BLDC external driver, Normally Closed limit switch.

5 - BLDC external driver, Normally Open limit switch.

6 - External DC h-bridge, Normally Close limit switch.

7 - External DC h-bridge, Normally Open limit switch.


PWM1 - (70-120) East-West steering motor speed  - If You are using External h-bridge reduce that parameter to 90.

PWM2 - (70-120) north-south steering motor speed  - If You are using External h-bridge reduce that parameter to 90.


AMP - (0 or 1) enable the DC motor load detection system.

0 - OFF.

1 - maximum current limit.

2 - minimum and maximum current limit.

3 - minimum current limit (important in case of using build-in limit switches with zener diodes - linear actuators) MINIMUM = AMP/10.

AMP1 - (0-250) setting of the maximum current consumption east-west.

AMP2 - (0-250) setting the maximum north-south motor current consumption.


UART - (0 - 1) enabling communication with the WiFi module - only WiFi version (default-0).

0 - OFF.

1 - ON - only remote control.

2 - ON for remote control / log and  STC<->ESP - Watchdog.


UPS - (0 - 2) enabling / disabling the operation of the AC power line failure detection sensor.

0- turned off.

1- turned on activated by the low state.

2- turned on, activated by the high state (default - 0).


V5 - (0 - 250) Board operation temperature limit security level.

0-5 - temperature limit off.

5 - temperature limit on.


DIG - (0-250) Digital anemometer signal is pulse per second (pps).

0-5 - wind alarm activated by single logical signal.

5 - pulse per second measurement mode.

WIFI IP address - The IP address of the WiFi module received from the router / AP - only in the version with WiFi.

INPUT / OUTPUT CONNECTORS: (see above image)

  1. POWER - 4 terminals (power supply to the system with 24V).
    • 1-2 Positive (+) terminals.
    • 3-4 Negative (-) terminals.
  2. EW - 2 DC motor terminals East~West direction max 10A.
  3. SN - 2 DC motor terminals North~South direction max 10A.
  4. LIMIT - 5 terminals
    • 1 limiter / reed switch in the East "E" direction.
    • 2 limiter / reed switch in West "W" direction.
    • 3 limiter / reed switch South "S" direction.
    • 4 limiter / reed switch in North "N" direction.
    • 5 ground (GND) common to all directions.
  5. WIND SENSOR: - 4 terminals.
    • 1 supply anemometer / wind sensor - positive pole (+).
    • 2 supply anemometer / wind sensor - negative pole (-).
    • 3 analogue signal from the anemometer / wind sensor in the range of 0 - 5V.
    • 4 digital signal from the anemometer / wind sensor 0-255 pps.
    • 1 "E" direction light sensor terminal East (red wire)
    • 2 "W" direction light sensor terminal West (green wire)
    • 3 "S" direction light sensor terminal South (yellow wire)
    • 4 "N"direction light sensor terminal North (white wire)
    • 5 terminal ground (GND) for light sensor (black wire)
  7. EXTERNAL: - 8 terminals LHS
    • 1 (GND) negative terminal external (inwerter, BLDC, STEPPER driver)
    • 2 NS speed switch
    • 3 EW speed switch
    • 4 zacisk darlington signal direction N
    • 5 zacisk darlington signal direction S
    • 6 zacisk darlington signal direction W
    • 7 zacisk darlington signal direction E
    • 8 Positive (+) DC power supply external (inwerter, BLDC, STEPPER driver) default 12-24V configurable via J18 jumper
  8. M3|Sens - 5 terminals
    • 1 peripheral device supply default 12-24V configurable via J18 jumper
    • 2 positive signal for main fan
    • 3 GND
    • 4 AC power line failure sensor signal
    • 5 (5V) (activated by J18 jumper)


The controller has 2 main fuses, counting from right to left. From the supply side to the motor output;

  1. E-W max 10A motor power fuse
  2. S-N max 10A motor power fuse

If You motor use more than 3A, It is recommended to use additionally - 2 fuses between the controller and the motor (on both wires).

How to choose fuses;

If the motor connected to the controller consumes 2A during start-up, the fuse for this motor should be max 3A


  1. it is the fuse to burn, not the controller or the engine in long term lock
  2. if motor use more than 6A set temperature limit and use fan for ventilation of the box in which the driver is installed (possibly with power supply - also source of heat)


A variety of Analogue anemometers providing a signal from 0 to 5V can be used.

Digital anemometers commonly use Pulses Per Second (pps), where 6pps =1mt per second Wind Speed.

Many units require a power supply, e.g.

  1. brown (+)
  2. black (-)
  3. green (-)
  4. blue (signal)

You can connect it directly to the controller by connecting the black and green to the same terminal.

The best way to TEST anemometer is to use a Leaf blower with the Air flow blowing into the Cups to Trigger the Stow function, the other way is to set the Trigger point Very low, to Trigger the Stow function.

ATTENTION; The wind gauge is a very sensitive device, if we use a poor quality DC power supply, it may affect the correct operation of the anemometer - then a separate power supply (small, about 50mA 12V or 24V) should be used for the anemometer, thus we will isolate the disturbances.
The controller also has the option to adjust noise filtering with the rotary potentiometer.
The disturbances are manifested by the fact that the controller detects the wind, even if the anemometer is spinning very slowly, the display shows a gradually increasing reading until the threshold set in the configuration is exceeded.

Any questions please contact us, thanks.


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