Physical Computing with Scratch using Raspberry Pi

This lecture covers brief description about new GPIO server for Pi Scratch is the first pass at a new, and hopefully, simpler way for users to connect Scratch to the Raspberry Pi’s GPIO pins. ScratchGPIO as easy as possible to start up and run. The ScratchGPIO is designed as an easy way to use Scratch on the Raspberry Pi to control lights/motors/sensors and switches using the GPIO pins.

This lecture covers brief description about the How to Install the ScratchGPIO and set up with the LXTerminal.

This lecture covers brief description about the GPIO pins allow the Raspberry Pi to control and monitor the outside world by being connected to electronic circuits

This lecture covers brief description about the GPIOServer: Usage and basic capabilities. And you will see, what are all the different ways to call the broadcast commands.

This lecture covers brief description about the ScratchGPIO commands in different was to communicate with Raspberry Pi.

This lecture covers brief description about how to build the Lighting a LED using ScratchGPIO program with Raspberry Pi. How to circuit the connection and this lecture shows the real time demonstration of this project.

This lecture shows the circuit diagram of Testing GPIO pins and LED lighting.

This lecture shows the circuit diagram of Lighting an LED using Switchable pin.

This lecture covers brief description about how to connect a button to a LED to control it. It gives the response with a button press using ScratchGPIO program with Raspberry Pi. As well as controlling the physical world, you can react to it using an input device such as a button.

This lecture shows the circuit diagram of how to connect the Button to control with Scratch program.

This lecture shows the circuit diagram of how to control the LED with a Push Button.

This lecture covers brief description about how an active buzzer can be connect just like a LED, but as they are a little more robust, you won't be needing a resistor to protect them. We will connect buzzer and a LED. Buzzer tones will make it different by programming with a delay.

This lecture shows the circuit diagram of how to Active the Buzzer with Scratch program.

This lecture covers brief description about the PIR sensor detects changes in the amount of IR radiation (heat) it receives. When there is a change, then a pulse is triggered. This means that a PIR sensor can detect when a human (or any animal) moves in front of it.

By creating a detector with your Raspberry Pi you will learn:

-         How to connect a passive infra-red (PIR) sensor to the Raspberry Pi

-         How to control the flow of your Scratch program by responding to the input from the sensor.

This lecture shows the circuit diagram of Passive Infrared Motion Sensor (PIR) connection.

This lecture covers brief description about how to build Raspberry Pi-based ultrasonic rangefinder, which can easily measure the distance and turned on the buzzer and Led in the stern time limit.

This lecture shows the circuit diagram of Ultrasonic sensor distance measure using Buzzer and LED.

This lecture covers brief description about how to control the DC Motor using L293D in ScratchGPIO with Raspberry Pi. In this project, what we plan to do is safely connect one or two motors to the Raspberry Pi using ScratchGPIO with as few components as possible. Once we have the electronics put together on the breadboard, I will show you how to control them easily using ScratchGPIO first to make the motor spin, and then add some control to change the motor direction so we can go backward.

This lecture covers brief description about the complete hardware requirements of this project. Concept behind the L239D IC, working status of L293D IC and Truth table to control the two motors.

This lecture covers brief description about how to construct the Raspberry Pi Bot.

This lecture covers brief description about the complete connection between the circuit of motors, driver and Raspberry Pi with the Pin configuration.

This lecture shows the circuit diagram of Motor Controller Using L293D with Scratch program.

This lecture covers brief description about the construction of ScratchGPIO program. In the ScratchGPIO start the GPIO serveron, then configure the broadcast pin numbers to the two motors. We’re using the pin numbers: 16, 18, 19, and 21. And real time demonstration of this project.

In a previous lectures, we've outlined Scratch bot car, all of which can plug directly into the Raspberry Pi's GPIO ports. Here, Adding the HC-SR04 Ultrasonic Distance Measuring Sensor Module into the Scratch bot car. The HC-SR04 ultrasonic range finder is very simple to use, however, the signal it outputs needs to be converted from 5V to 3.3V so as not to damage our Raspberry Pi! I will introduce some Physics along with Electronics in this tutorial to explain each step!

This lecture shows the circuit diagram of Obstacle avoidance_Motor car.

This lecture covers brief description about how to make the LEDs based dice for monopoly. Aren't we all bored with the usual 6 faced dice while playing Monopoly or Ludo. How does it sound to use a completely digital dice made up of LEDs to do the same? Good? Then, let’s start making one.

This lecture shows the circuit diagram of LED based DICE for Monopoly.