RASPBERRY PI + MATLAB = WI-FI IP-CAMERA
Once you connect the camera, you will have to ensure that the center of the stepper motor exactly coincides with the center of the image captured by the camera. With this, the triangulation setup will be complete. The turn-table can be printed using the models linked in the download section. The base can be fitted directly on top of the stepper motor. The bearing slides into the base and the turntable plate should fall into place on top of the bearing and connecting the shaft coupling connected to the stepper motor shaft.
Raspberry Pi Programming with MATLAB and Simulink
Once you connect the camera, you will have to ensure that the center of the stepper motor exactly coincides with the center of the image captured by the camera. With this, the triangulation setup will be complete. The turn-table can be printed using the models linked in the download section.
The base can be fitted directly on top of the stepper motor. The bearing slides into the base and the turntable plate should fall into place on top of the bearing and connecting the shaft coupling connected to the stepper motor shaft. The complete setup should look like this: I am also assuming that the Pi Camera is connected to the camera port on the board.
The circuit diagram assumes the pin layouts match this board. There are two main parts to the hardware setup: This board takes away all the pains of having to build a voltage-regulated power supply that can deliver consistent and enough current to run a stepper motor, along with the Pulse Width Modulation control signals required to run them. With this board, all we need to do is connect a DC power supply with a high-enough current rating 4 Amps is sufficient , connect the control lines to IO pins on the Raspberry Pi, connect the stepper motor to the motor output, and you are ready to go!
It really is that simple. Thanks Brian! And Did I mention that EasyDriver also provides a regulated 5v output that can drive other circuits? Well, yes it does! Double Thanks Brian! The EasyDriver requires the following inputs: ENABLE— When this control signal is low 0v , the motor output is enabled and what signals are applied to the other control signals, get propagated to the stepper motor.
We have to remember to set this pin to logical 0 whenever we want to enable the stepper motor and to logical 1 whenever we want to disable it. The stepper motor usually takes about steps to complete one full rotation — with a step-size of 1.
Essentially this means that it allows you to reduce the step-size to 0. Setting the pins to 0,0 tells the driver to run the motor without any micro-stepping. The values in between are left to you to decipher.
STEP— this control line drives the stepper motor. When we apply a pulse to this line , the driver moves the stepper motor by one step when the line transitions from 1 to 0 also called the falling edge of the pulse.
More about that in the software setup. DIR— this control line decides whether the stepper motor will rotate in the clockwise or counter-clockwise direction. Setting this line to logical 0 makes the stepper rotate in clockwise direction and logical 1 makes it rotate in the counter-clockwise direction. We accomplish this using a very simple transistor switch circuit.
By ensuring that voltage across the base and emitter is higher than the forward bias, we allow the current to flow through the collector and thereby activating the LASER diode.
I would recommend that you test the entire circuit on a breadboard before assembling it on top of the prototyping shield so that there is no need for any costly reworks!
Getting the Software together For the software, we need to do two things: You can get the details about that here: This is a simple GUI interface for the scanner. There basic utility functions that are self-explanatory in the sense that they control the functioning of the LASER, the Stepper motor and camera. The cameraParams. You should regenerate the cameraParams.
To run this example, you need the following hardware: All versions of the Raspberry Pi hardware have one or more expansion headers. To see a diagram of the pins of your Raspberry Pi hardware, use showPins method of raspi object. The raspi object determines the version number of your Raspberry Pi hardware and displays the correct pin diagram for your version of the board.
VIDEO: Raspberry Pi can be programmed with Mathworks MATLAB and Simulink
Introduction. Raspberry Pi is a single board, credit-card size computer that can run Linux®. Raspberry Pi hardware has low-level interfaces intended to connect . mypi = raspi creates a connection, mypi, from the MATLAB® software to the Raspberry Pi™ board. Use this syntax to connect or reconnect to the same board. You might have prior knowledge that MathWorks has provided a Simulink block dedicated for various open source boards including Raspberry Pi.