This is my Rotor project.
It is an ESP32 based Rotor controller that connects with either SatDump or Stellarium and can track objects.
I'm using this with my SDR Antenna to track Satellites.

The ESP32 creates an Access Point and is a webserver at the same time. Via a webbrowser you can control the rotor.

Use host: 192.168.4.1
Port: 4533 (default)

When using SatDump first allign the Rotor before start tracking in SatDump.

With your Laptop running Stellarium make sure the Remote Control Plugin is activated with the default port (8090) without username and password. Connect your Laptop to the Access Point and open a webbrowser and goto http://192.168.4.1 here you will see the controller.

When you are connected and Stellarium is running and an object is selected you should see the name of the object and it's location in your browser. You will need to have Stellarium in you active window for the tracking to work, otherwise Stellarium will not update the object position. So I end up with my browser and Stellarium side-by-side in one window.

All required settings are set in the config.ini file, which needs to be uploaded to your ESP32 When using PlatformIO use "Build File System" and "Upload File System Image", this is required anyway to also upload the index.html file.

Most parameters in the .ini file are self explainatory, hence we'll focus on the servo settings here. There are 2 servo's: an Azimuth and an Altitude servo.

SERVO_ALT_DEGREES   = 180       // Most servo's have a range of 180 degrees  
SERVO_ALT_MIN       = 500       // Min pulse of servo  
SERVO_ALT_MAX       = 2500      // Max pulse of servo  
SERVO_ALT_OFFSET    = 0.0       // When you have an offset antenna/dish, the offset in degrees  
SERVO_ALT_DIRECTION = 1         // Well the direction, some more the other way around, depending on your physical build  
SERVO_ALT_SMOOTH    = 0         // When 1 the servo's move gradually, this is recommended for large heavy antenna's  
  
SERVO_AZ_DEGREES    = 270       // Most servo's have a range of 180 degrees, I've chosen a 270 degrees servo for my Azimuth  
SERVO_AZ_MIN        = 500       // See above  
SERVO_AZ_MAX        = 2500      // See above  
SERVO_AZ_DIRECTION  = -1        // See above  
SERVO_AZ_SMOOTH     = 0         // See above  

All build dependancies are in the platformio.ini file.
Building using PlaformIO should be straightforward.

Once the ESP32 is running:

1. Connect your laptop to the Access Point.
2. Make sure that Stellarium is running on your laptop and that the Stellarium Remote Control Plug-in is activated on port 8090 without Username and Password.
3. Visit the Control Pannel (http://192.168.4.1) in your web-browser.

When you select an object in Stellarium, the name of the object and the ALT/AZ coordinates should be visible in the Control Pannel in your browser. It should be looking someting like this:

The first step is to calibrate the rotor. With the speed, arrow and north/south button angle you antenna exactly horozontally and facing either north or south (depending on the selection), then press "Ok'. The Rotor is calibrated now.

If an object is selected use the "Start Tracking" button to track the object. In this tracking mode you can make calibration adjustments by using the Speed/Arrow buttons.

Happy tracking!

The onboard led is used for 2 error conditions. See below.

When the led blinks very fast, there is a serious problem (couldn't mount SPIFFS) and the program halts.
You will have to do some debugging :-(
It would be good to let me know as well when this happens.

1 second on, and 2 second off.
No worries, there is no connection to the Access Point or no connection to Stellarium, just go and fix this.

I'm using my own implementation of a Servo class, since I couldn't get ESP32Servo.h to work.

Will be completed later after the development is more mature. Later on I'll make a seperate directory to outline the physical build as well.