ufresort.blogg.se - Rpi power supply for fritzing

Then connect control input pins 2 and 7 (1A and 2A) to GPIO24 (Physical Pin 18) and GPIO23 (Physical Pin 16) respectively. Connect the pin 1 of L293D (1,2EN) to GPIO25 (Physical Pin 22) of Raspberry Pi. Also, connect the ground pin of L293D to GND pin of the Raspberry Pi.įinally, we have the enable and control input pins. First, connect the pins 8 and 16 (VCC2 and VCC1) of L293D to external 5V supply (assuming you are using a 5V Motor). The design of the circuit for controlling a DC Motor with Raspberry Pi is very simple.

The Pin diagram of the L293D Motor Driver IC, along with the pin description is shown in the following image. It is a very common motor driver IC which is capable of driving two motors with individual currents up to 600mA. I’ve used L293D Motor Driver IC for controlling a DC Motor with Raspberry Pi.

Miscellaneous (Computer, Ethernet Cable, etc.).

You can easily configure this circuit and the program for controlling two DC Motors with Raspberry Pi and L293D Motor Driver IC. The circuit wiring diagram of the project is shown below. The following image is the Fritzing diagram of the project. For simplicity reasons, I’ll demonstrate the circuit, working and program for controlling a single DC Motor with Raspberry Pi. Circuit Diagram Fritzing ImageĪs I have said earlier, with L293D Motor Driver IC, we can actually control two motors. As per the Python Program, the motor will rotate in either forward or reverse direction.

In this project, the motor driver (L293D) is given with two control signals from Raspberry Pi through GPIO Pins. They take the control signals from Raspberry Pi and provide the necessary drive current to the motor from the power supply. Motor Driver play an important role in this situation. Hence, we should never connect a motor directly to Raspberry Pi (or any other microcontroller). This is a huge current for devices like Microcontrollers, Arduino, Raspberry Pi etc. This current will then fall down 150 – 200 mA as the motor gains speed to around. A Motor Driver is a special circuit or IC that provides the necessary power (or rather the current) to the motor for smooth and safe operation.Įven a small 5V DC Motor draws a high initial current of around 300 – 400 mA. The main principle in controlling a DC Motor with Raspberry Pi lies with the Motor Driver. Working of the Project and Code Explanation.Python Program for Controlling a DC Motor with Raspberry Pi.