HOW TO MAKE AN AGRICULTURE DRONE FOR SPRAYING MEDICINE

HOW TO MAKE AN AGRICULTURE DRONE FOR SPRAYING MEDICINE QUICK AND SAVE TIME.

INTRODUCTION

This is a type of heavy lifting & agriculture drone spraying drone. This drone lift heavy weight like 5 liter, 6 liter 10 liter water tank etc. there we making   5 liter drones because this is a budget build..

Components used

1.       4 pics 750 kv disk bldc motor

2.       4 pics 40 A esc D-short

3.       1 quad copter fream

4.       Transmitter &  receiver

5.       Pixhawk 2.4.8 flight controller full kit with m8n gps and telemetry.

6.       4 cell orange 8000 mah lipo battery

7.       Medicine sprays mechanisum.

8.       5 water tank.

There we use 5010 size 750 KV disk brushless motor. This motor produces high torque. So we can use bigger propeller on this motor to heavy thrust.

DISK BRUSHLESS MOTOR

 

There we use 40A esc because this motor draws heavy current when motor run load condition. But some were use normal 30 amp esc this time when the motor run heavy load then the 30 amp esc nor carry heavy current the the esc heated and burn out. And the drone crashed.

ESC( ELECTRONICS SPEED CONTROLLER)

                   So we recommended 40A or more amp esc .there is main role here is the battery and flight controller. We recommended the battery is 4cell lipo or 6 cell lipo (when you use 6 cell lipo you use 6cell supported esc. there we use 4 cell battery and 2-6 cell D-short esc. The 3 cell battery not efficient power supply the disk motor so we can use 4 cell lipo to increase voltage and power 3 cell battery voltages is – 11.1 v & 4 cell lipo voltages is – 14.8 volt. You can choose any kind of MAH (mile ampere per hour) there we use 8000mah to increase flight time. You choose lower MAH on your budget to less than flight time to 8000MAH.

LIPO BATTERY 4 CELL

And second main role is the flight controller to stable fly and perfect fly. There we make quad copter so we use pixhawk 2.4.8 32 bit flight controller with gps.the pixhawk flight controller is budget flight controller. This is open source flight controller and easy to programming through mission planner software.

PIXHAWK 2.4.8 FLIGHT CONTROLLER

Fream

There we use strong and heavy weight lift & agriculture drone spraying able fream. Like tarot quad copter carbon fiber fream. Because the carbon fiber is light weight and strong material.

HOME MADE FREAM

So there we make a fream at low budget using 20 mm aluminum square pipe and PVC sheet.

Medicine spray mechanism

SPRAYING NOSEL

There is a high pressure bldc diaphragm pump and spray nosel  the pump out let connected to spray nosel the spray nosel fix on down ward because when spray medicine fall down ward. And the motor inlet pile connected to the storage tank.

HIGH PRESSURE WATER PUMP

Transmitter and receiver

There we can use 6 channel fly sky fs i6x transmitter with 6 channel receiver

10 CHANNEL TRANSMETTER & RECIVER

We need 6 channel transmitter receivers because their use 5 channel like 4 channels is used to control the drone and channel 5 used to trigger the spray pump.

SPRAYING MECHANISM

MAKING THE DRONE (CONNECTIONS)

Fist we fix the 4 motor on drone fream arm. Then fix esc and connected the esc 3 wires to motor 3 wires.You always remember that the motor rotation 1 clock wise and 2 clockwise. You can follow the picture.

 

MOTOR SIGNAL WIRE WIRING

When all motor rotating same direction you can interchange the esc two wires to rotate the motor backward direction.

Then placed flight controller shook absorber. This shock absorber absorbed all vibration on the motor. And protect the flight controller from vibration. Then placed the flight controller on the shock absorber.

 Then connect properly positive terminal and negative terminal of the esc to the power distribution board .the power distribution board connected to out let of the power module of the flight controller the power module (PM) is sense the voltage of the battery and current flows and send these data on the flight controller. In case the battery is low then pm sense the voltage and send the data to flight controller then the flight controller buzzer on and land the drone. If you set the rtl (return to lunch) the drone track the gps and come to the takeoff position and land.

Then power module in let wire is connected to battery.

Now we connect the motor signal wire on flight controller there we show the image segment. Motor 1 is connected channel out number 1 of flight controller. And 2, 3&4 no motor connected to 2, 3, 4 pin to the flight controller. And the recover ppm pin connected to RC in pin on the flight controller

QUAD COPTER MOTOR ROTAT DIRECTION

And install the m8n gps module properly and connect the jack 1 is gps port and there is i2c Port. And connect the pm data wire in pm port on flight controller. Fix the battery on the drone fream down side using battery strip.

Now we fix the spray mechanism on the landing gear position. A PVC sheet placed on the down side of the landing gear. The bldc high presser motor paced on this platform on front side. And the 5 l tank placed on back side of motor. You measure the weight of 5 l tank and the motor and it placed on center of the drone. We mean the loaded tank and motor weight centered on drone. Because when the all weight is centered on drone body then the drone fly perfectly and stable. The motor signal wire connected to aux 1 port to the flight controller. And program it the transmitter channel 5 is set on toggle switch and wright the command then we check it properly works or not. When the switch is on then the motor is on. Now you can spray medicine. Now we can make it autonomous drone to connect the telemetry module. 

TELEMATRY MODULE 

The telemetry module has 2 part 1 is ground module and 2 is air module. The air module is placed on the drone and connects its cable in telemetry 1 port on flight controller. And program it again. The ground module is connected to laptops and mobile phone through OTG. And open this app and wright the mission and upload it then the drone fly to the mission you instructed. It fly self without manual controlled there is not using transmitter.

So you draw the map on the mobile and upload it the drone follows these drawing lines you draw. Now this drone is fully autonomous.

Thanking all of you .............................