In this lesson, we will show you how to use Python3 Flask and Camera Stream software to control a Raspberry Pi Robot Car through the Internet. You will monitor the car’s real-time movement through its eye (front camera).
Step 2: Install servo motor at the front of upper car chassis with 2pcs M2.2*8 Self Tapping Screws
Step 3: Choose slotted bracket in servo motor to cross Camera holder from top to bottom and fix blade with M1.5*6 Self Tapping Screws
Step 4: Install CSI camera to holder with 4pcs M2 push pin rivets
Step 5: Install Camera holder on servo motor with 1pc M2*4 Self Tapping Screws
Step 1) Servo Must be installed and connected PWM 15 port
Step 2) Connect CSI camera to CSI Slot of Raspberry Pi with CSI ribbon cable (Please pay attention to the connections of the cable before you install it.)
Make sure you have installed rpi.gpio, adafruit-pca9685 library and enable I2C in lesson 1, and power on the robot car.
Please use following command to start picamera streamer server in your Raspberry Pi
Step 1: Please disable Camera in Raspberry Pi by typing following command (Note: If you burn BOOKWORM OS, you needn’t disable Camera)
sudo raspi-config
Then select → Interfacing Options→ Camera→ No→ Ok→ Finish (Please reboot the Raspberry Pi according to the notice.)
Step 2: Type following command to install mjpeg-streamer software :
wget https://osoyoo.com/driver/picar/camera.sh
Step 3: Type the following command:
bash camera.sh
After running above commands, Osoyoo Camera Stream software is installed in your Raspberry Pi. So Simple!
Step 5: Start Camera Stream Server
Run following command in your Pi terminal will start your mjpeg-streamer server
python startcam.py
Step 6: Now you can use your browser to test the surveillance video. Now please visit http://your_raspberry_pi_ip:8899/stream.mjpg (in my case http://192.168.5.177:8899/stream.mjpg), you will see the video surveillance.
Method 1: Use browser to control a Raspberry Pi Robot Car through the Internet
Step 1: Open a new terminal window and run the following code to install the OSOYOO web camera controlled robot car software
wget https://osoyoo.com/driver/picar/mecanum.sh
Step 2: type the following command:
bash mecanum.sh
After running above commands, you will automatically create a directory called osoyoowebcar, the structure is as follows:
Step 3: type the following command to enter the folder osoyoowebcar
cd osoyoowebcar
Step 4: Then type the following command to edit the file webcar.py
nano webcar.py
Step 5: Replace ip address 192.168.5.177 in line 15 to your Raspberry Pi IP address, and click “Ctrl“+”X” then “Y” to save the file and then click “enter” to exit the file.
Step 6: Then type the following command to edit the file templates/index.html
nano templates/index.html
Step 7: Please change 192.168.5.177 in line 34 to your pi’s IP address, and click “Ctrl“+”X” then “Y” to save the file and then click “enter” to exit the file
Step 8: put the car on the ground and run the code by typing the following command
sudo python ~/osoyoowebcar/webcar.py
Step 9: In your PC or cell phone which is the same Wi-Fi network of your Raspberry Pi, open the browser and visit http://your_RaspberryPi_ip_address.
The arrows buttons are direction control keys, the red circle button in the middle is the STOP key. There are four speed control buttons in the bottom:
0 key means the slowest speed
— key means the 2nd slow speed
== key means regular speed
++ key means fastest speed
In the top of the page, there is a Camera Direction Slider, you can move the slider in order to rotate the servo and change the camera orientation.
