DIY light sensor servo activator PCB for drone fishing/search & Rescue

DIY light sensor servo activator PCB for drone fishing/search & Rescue.
 
This PCB is a light sensor board, operates on a 3.7v battery (up to 5v) that activates a servo motor every time a signal is received from the LDR (light sensor) or from the test button.
 
It has:
- On/Off switch.
- Test Button
- LDR
- Servo Output
 
It comes with a 3.7v rechargeable battery + USB charger.
 
There are 2 Types of boards:
1- Will make the servo move only 1 step (30 degrees) back or forth every time a signal is received from the LDR (light sensor) or from the test button.
 
2- Will make the servo move 2 Steps (30 degrees+30 degrees) back or forth every time a signal is received from the LDR (light sensor) or from the test button.
 
You can use this board to make your own dropper for drone fishing / Search & rescue device for DJI Drones or any other application that you can think of :-)