Wifi controlled rover prototype
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The document discusses a project by students to develop a Wi-Fi controlled Mars rover, which can be applied in various defense applications like landmine detection. It details the components used, such as a NodeMCU for control and an L293D motor driver for bidirectional motor operation, along with the system's functional design and mobile app integration. Future applications include use in surveillance, home automation, and aiding handicapped individuals.
Wifi controlled rover prototype
- 1. Students :- Suraja Singh, Abhishek Sathiya, Ankit Sharma, Shahrukh Ansari, Vikash Kumar, Ujjwal Rathore
- 3. OBJECTIVE: A mars rover is a motor vehicle that travels across the surface of the planet mars upon arrival. The motion of robot controlling via internet is one of the easy means as it requires the user to access the designated webpage to guide it. This system can be used in defence applications for detecting landmines in war field and for bomb detections by mounting a metal detector sensor on it. Further, the size of device can be miniaturized based upon specific applications. CAD DESIGN:
- 4. CIRCUIT DIAGRAM: PROPOSED SYSTEM:A 12 Volt DC Power Supply has been apply to Microcontroller and Motor Driver. The Microcontroller text input and gives output to the Wi-Fi module. Here by directional arrow has been between the Microcontroller and Wi-Fi module. Motor Driver is the by directional arrow has been used between the Microcontroller and Mobile Control Internet.
- 5. CONTROL SYSTEM: Working of the Wi-Fi controlled robot is very easy, we just need to Drag or Slide the joystick in the direction, where we want to move the Robot. If we want to move the Robot in Forward direction then we need to drag the Joystick ‘circle’ in forward direction. Like we can move the Robot in Left, Right and Backward direction by Dragging the Joystick in respective direction. Now as soon as we release the Joystick, it will come back to Centre and Robot. Blink App sends values from Two Axis Joystick to Arduino through Wi-Fi medium. Arduino receive the values, compare them with predefined values and move the robot accordingly in that direction. We are using a mobile app which is developed by Roboindia. After starting bot do some things... 1. Connect our mobile with Nodemcu Wi-Fi (In my case hotspot name is "My- Robot" and Password "iamnotarobot"). 2. After that add the IP address in the app (which you maintain on theprogram). After all of this step, the mobile is used as a controller.
- 6. COMPONENT DESCRIPTION: Motor and Motor Driver L293D: An electric motor is an electrical machine that converts electrical energy into mechanical energy. L293D is a typical Motor driver or Motor Driver IC which allows DC motor to drive on either direction. L293D is a 16-pin IC which can control a set of two DC motors simultaneously in any direction. It means that you can control two DC motor with a single L293D IC. Dual H-bridge Motor Driver Integrated Circuit (IC). The l293d can drive small and quiet big motors as well, check the Voltage Specification at the end of this page for more info. L293D is a typical Motor driver or Motor Driver IC which allows DC motor to drive on either direction. L293D is a 16-pin IC which can control a set of two DC motors simultaneously in any direction. It means that you can control two DC motor with a single L293D IC. Dual H-bridge Motor Driver integrate circuit (IC). The l293d can drive small and quiet big motors as well, check the Voltage Specification at the end of this page for more info. 1. L293D is a quadruple high-current half-H driver. The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V. 2. All inputs are TTL compatible. Each output is a complete totem-pole drive circuit, with a Darlington transistor sink and a pseudo-Darlington source.
- 7. 3. Drivers are enabled in pairs, with drivers 1 and 2 enabled by 1,2EN and drivers 3 and 4 enabled by 3,4EN. • When an enable input is high, the associated drivers are enabled and their outputs are active and in phase with their inputs. 4. When the enable input is low, those drivers are disabled and their outputs are off and in the high-impedance state. 5. A VCC1 terminal, separate from VCC2, is provided for the logic inputs to minimize device power dissipation. NodeMCU: NodeMCU is an open source IoT platform. It includes firmware which runs on the ESP8266 Wi-Fi SoC from Espressif Systems, and hardware which is based on the ESP-12 module. The term "NodeMCU" by default refers to the firmware rather than the development kits. The firmware uses the Lua scripting language. It is based on the eLua project, and built on the Espressif NonOS SDK for ESP8266. It uses many open source projects, such as lua-cjson, and spiffs.
- 8. MOTOR: Rated RPM 30 Operating Voltage (VDC) 12 Rated Torque(kg-cm) 5 Stall Torque (Kg-Cm) 18.8 Load Current(A) 0.3 No-Load Current 60m A Motor Diameter(mm) 32 Shaft Diameter (mm) 6 Shaft Length (mm) 22 TIRES: High quality Plastic Tracked Wheel for motors with 6 mm diameter. Size: 1. Diameter - 7 CM 2. Width of wheel - 4 CM 3. Shaft bore - 6 MM 4. Screw provided to tight wheel with motor shaft.
- 9. POWER SUPPLY: 12V Battery or We used a Mobile power bank for power supply. which gives us 5V/2A output. COST REPORT: Component Name Price Nodemcu 300 Motor Driver 345 Tire 199 Motor 732
- 10. APPLICATION AND FUTUR SCOPE: 1. Can be used as surveillance robot. 2. For home automation. 3. For control wheel-chair for handicapped. 4. For long distance controlling of devices. 5. For covering highly dangerous area etc. 6. For use as unmanned ground land mine detector. REFERENCE: 1. College teachers 2. Roboindia Tutorials & documents 3. Arduino IDE (Integrated Development Environment) 4. AUTODESK TINKERCAD (for simulation) 5. YouTube tutorials and Online Papers.
- 11. OTHER ACHIEVEMENTS:- BITS GOA TECH FEST (QUARK)