12/21/2023 0 Comments Arduino robot![]() Then using the atoi() function we convert the received data, or the X and Y values from the joystick, into integer values, which are suitable for the motor control code below. at the Arduino robot car, after defining the module as receiver, we accept data using the radio.read() function. write(&xyData, sizeof(xyData)) // Send the array data (X value) to the other NRF24L01 modile // Y value These DIY projects are covered with detailed description, circuit diagrams, source codes and. XAxis.toCharArray(xyData, 5) // Put the String (X Value) into a character array Explore below some simple Arduino based robotics projects. YAxis = analogRead(A1) // Read Joysticks Y-axis // X value */ # include # include # include RF24 radio ( 8, 9) // CE, CSN const byte address = "00001" Now we can move on to the next method, wireless control of the Arduino robot car using the NRF24L01 transceiver modules.Īrduino Robot Car Wireless Control using the NRF24L01 Transceiver moduleīy Dejan Nedelkovski, Library: TMRh20/RF24, ![]() available() >= 2) Code language: Arduino ( arduino ) Arduino Robot Car Wireless Control Using NRF24L01 Transceiver Module Read the incoming data from the Joystick, or the master Bluetooth device while ( Serial. Default value - no movement when the Joystick stays in the center So here, if the serial has received the 2 bytes, the X and Y values, using the Serial.read() function we will read both of them.īy Dejan Nedelkovski, */ # define enA 9 # define in1 4 # define in2 5 # define enB 10 # define in3 6 # define in4 7 int xAxis, yAxis We do this because that range, from 0 to 255, can be sent, over the Bluetooth device, as 1 byte which is easier to be accepted on the other side, or at the Arduino robot car. We can note here that the analog values of joystick from 0 to 1023 are converted into a values from 0 to 255 by diving them by 4. We just need to read the X and Y values of the joystick, which actually regulate the speed of the motors, and send them via the serial port to the slave HC-05 Bluetooth device. The code at the master device, or the joystick is quite simple. write(xAxis/ 4) // Dividing by 4 for converting from 0 - 1023 to 0 - 256, (1 byte) range Serial. YAxis = analogRead(A1) // Read Joysticks Y-axis // Send the values via the serial port to the slave HC-05 Bluetooth device Serial. ![]() To be more accurate, the HC-SR04 uses sonar more like a bat, sending out sound waves and measuring the time it takes for them to return. With the HC-SR04 it is possible for the robot to gather real world information to feed to the Arduino brain. XAxis = analogRead(A0) // Read Joysticks X-axis The HC-SR04 Ultrasonic Distance Sensor is the eye of the robot. The structural, mechanical, and electronic components of the. 5 ABSTRACT This project will undertake the construction and implementation of a two-wheeled robot that is capable of solving a maze constructed as a line. begin( 38400) // Default communication rate of the Bluetooth module Arduino Duemilanove 12 Fig 7: L14F1 Photo Darlington transistor 13 Fig 8: L293D Motor Driver Circuit 13 6. If button "SAVE" is pressed if (dataIn.Arduino Robot Car Wireless Control using the HC-05 Bluetoothīy Dejan Nedelkovski, */ int xAxis, yAxis Then we need to define the six servos, the HC-05 Bluetooth module and some variables for storing the current and previous position of the servos, as well as arrays for storing the positions or the steps for the automatic mode. Both of these libraries are included with the Arduino IDE so you don’t have to install them externally. So first we need to include the SoftwareSerial library for the serial communication of the Bluetooth module as well as the servo library. And at the end of this article I will post the complete source code. ![]() Arduino Robot Arm CodeĪs the code is a bit longer, for better understanding, I will post the source code of the program in sections with description for each section. As an Amazon Associate I earn from qualifying purchases. Amazon / Banggood / AliExpressĭisclosure: These are affiliate links. HC-05 Bluetooth Module ………………….… Amazon / Banggood / AliExpress.You can get the components needed for this example from the links below: So once we have connected everything together we can move on to programing the Arduino and make the Android app. The power source must be able to handle at least 2A of current. For powering the servos we need 5V, but this must come from an external power source because the Arduino is not able to handle the amount of current that all of them can draw.
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