![]() In your program, write separate function for Forward, Reverse ,Turn Left, Turn Right, Stop ,etc. Courtesy: Sparkfun Websiteįor more detailed read on various Bluetooth Profile read The Bluetooth Module works as SPP (Serial Port Profile). The Arduino UNO then executes the function as intended through the received message. The Bluetooth Module receives the message from the Mobile Phone / Connected Device and transfers it to the Arduino UNO through Serial Link. Arduino UNO has only 1 Hardware Serial and that we use while programming the Arduino Board, therefore we emulate the Digital Pins to be used as Software Serial by use of Software Serial Library. But, we will not make use of Hardware Serial Port of Arduino rather we will Software Serial Port. The Bluetooth Module communicates with Arduino through Serial Link i.e. The other important concept we are going to use is Serial Port Communication. I would recommend to read the lesson from Arduino for clear understanding. PWM diagram from Official Arduino Website. So, what it means is that at PWM 0 the Average Voltage from PWM will be 0 and at PWM-255 the average Voltage at PWM Pin will be 5V. Arduino as it has 8bit PWM specified therefore 2^8=256. PWM translates to Pulse-Width-Modulation.The minimum value of PWM is 0 and Max is 255 w.r.t. Here, in this project we are going to make use of PWM for the control of DC Motor and change its speed through PWM. For people who are new to Arduino Coding, I will recommend that you first start from simple programs like Blink LED, etc. The next step will be to upload the code to Arduino. Once paired the module will either blink Blue LED or Red Led will become stable or blink at some long interval. If it asks for Pin while pairing try “0000” or “1234” either should work. The display name should come as HC-05 or HC-06. At this time the Bluetooth Module will be searchable and it can be paired from phone. This means that Bluetooth Module is in pairing mode and is broadcasting its ID. The Bluetooth Module should start blinking red LED. Once you have made the above connection and power ON the Circuit. Battery PositiveĬonnection Diagram For Bluetooth Control Car Using Arduino UNO Refer below table/diagram for the power connection. This Can be used to power your Arduino as well. Also, the Motor Driver comes fitted with 7805 Voltage regulator and has a 5V Out Pin. ![]() ![]() The Enable Pin of the Motor Driver should always be connected with any PWM pin of Arduino if you want to run your motor at varying speeds.ĭifferent Motor Drivers may have different naming for pins but it can easily be figured out. We need to interface Bluetooth Module and L293D Driver module with the Arduino UNO.įollow the below diagram and table to make the connection. Next step is to complete the wiring of the above components. If you need them in bulk then Pinwheel Robotics gives these item at the best price. Most of the above items you can buy online or from your local shops. A post shared by PinWheel Robotics Required Components ![]()
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