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1 In this topic you will explore the range of methods of input that the micro:bit has, and the commands used to code these inputs. Topic 3 Need Input and Output Write a list of inputs that a micro:bit has. Learning Objectives Use the reference guide and help feature how each command works. Using Buttons On button pressed command These Labelled A and B. When pressed they can be used to execute microbit. Create a program where each button generates a different image. Pressing both buttons together is a third input event and in this case generates two images that alternate creating a simple animation. Understand that the micro:bit takes input, and after processing the input, produces output. Learn the variety of different types of information the micro:bit takes in as input. Apply this knowledge by creating a micro:bit program that takes input and produces an output Computing Concepts Identify and the input devices available on the microbit and their function Use a variety of microbit commands to process the information received as input When an input is used it can be tested in the simulator. By clicking on that input. Try combining different basic commands to display different information when the buttons are pressed. e.g. an intelligent badge, Showing details like age, name mood etc Use a variety of microbit input event handler commands to create real world solutions Debug and Download to the micro:bit.

2 Using On Shake command The accelerometer on the micro:bit which detects changes in the micro:bit s movement. The On shake command allows the use of this information. Making a simple dice requires the use of a variable. To create a Variable access this tutorial - blocks/variables You code should look like this. Test in the simulator to use the sake feature. Then download to the micro:bit Using On Pin command - As inputs, the microbit Pins are able to detect changes in current. This is spread between the Pins either 0,1,2 and Pin GND. The micro:bit is able to detect the change in current across the Pins even the extremely small amount your body causes when the pin is touched. In this example when Pin 0 is touched the microbit generates and displays a random number between 0 and 100. Complete the Love Meter Project Tutorial found in the projects folder. This is a tutorial, follow the on screen directions

3 Using the Light level command. The light level command requires another command to do something with it. e.g. show number or assigned to a variable. Notice that when you use the Light level command the simulator a small half filled circle appears, by click and dragging the border between the light and dark, you can vary the amount of virtual light. the value next to it will display on the microbit. 0 equals dark and 254 equals full light By assigning the light level command to store its value in a variable you can get more control of when and where the readings are taken. Using the button and a variable it is possible to make a simple light meter recorder Using the Temperature command - This works in a similar way to the Light command. It is easier and more productive to assign the temperature value to a variable. Create a program that automatically converts the temperature reading to from centigrade to Fahrenheit. Where in your school curriculum could these features be used and extended?

4 Using the magnetometer to create a compass. Like an analogue compass the sensor detect the earth s magnetic field it return a value that is compass heading. To make sure the sensor works well. It is advisable to add a calibration function to the code. This can be done by assigning the calibrate compass function to a press of both A+B. Again a variable has been used to assign the compass heading and again the microbit simulator will show a virtual heading dial which can be used to test your code. Build a more useful compass that converts the heading value into a direction. Details for building this compass can be here lessons/compass Using the acceleration command There is an accelerometer on the micro:bit which detects changes in the micro:bit s movement. It converts analogue information into a digital form that can be used in micro:bit programs. Output is in milli-g. The device will also detect a small number of standard actions e.g. shake, tilt and free-fall. Explore the reference documentation here reference/input/acceleration Use these buttons to see the code in action Find out what they do. Create this code and download it to a micro:bit. Carefully swing the micro:bit. What happens?

5 Trainer Reflection What have you learnt in this topic? Topic 3 Need Input and Output What else do you think you need to know about this topic and how will you find this out? How might you introduce this topic to other teachers? Maker Activities us.com/bbcmicrobit/activities/electrofishing us.com/bbcmicrobit/activities/shootin g-hoops uk/microbitprojects/microbitgames/bbc-microbitsteady-hand-game Table football - KnvA What areas of this topic might be difficult to teach or understand for other teachers? Smiley Button -.org/projects/smileybuttons Love meter -.org/lessons/lovemeter/activity Simple Thermometer.org/reference/input/temp erature Compass -.org/lessons/compass Glowing Pedulum -.org/lessons/glowingpendulum