Every microbit has a 2.4 GHZ radio module bulit into the CPU.
Below is demo of what we are going to do in this short tutorial–send a number of radio waves from one microbit to the other:
Radio Group. Both microbits must be set to the same group number. I chose the number 5. Just make sure you set that first (on start).
Most common error is not setting the same radio group on both microbits.
If/else if / else with a variable
Create a variable and set it to a random number:
Plot Bar Graph
Radio Communication . Read the Tutorial Here
Coming soon…Next how to
How to do common stuff with MakeCode
Topics/Links : On Start Show String
Stuck? Check out this code
Topics/links : Button A
Stuck? Check out this code
Topics/links : Button A , if / else , set variable
Stuck? Some of the code
Topics/links : Shake Event, if else , set variable to random ,
NOTE: Please make sure you save a copy of Mission 4. Don’t lose it! (We might use it later)
Result :
Code for Forever loop/ plot bar graph/acceleration
This is a 2-parter. Part I involves upgrading the Mission 4 scout
Topics/links for Part I : Shake Event , Radio Communication Full Example
Topics/links : Shake Event , set radio group, on radio receive , on radio receive number if/else Radio Communication Full example
Some Examples of what people have done before:
Use onshape to generate a winter themed 3-d drawing. The more complex, the more points.
Ideas include : snowflake, snowman, Hanukkah candles, christmas tree with presents
Example of 5 out of 5 initial outline
Example of 3 out of 5
Some good actual examples of completed projects
Step 1) Create a 25, 30 , 40 and 42 MM circles all centered at the orig
Step 2) Add a single circle on the right that has a radius of 35.
Step 3) connect centers with construction line. Make sure that the blue lines are coincidental to the circles
tip: if you draw a line , you can use the ‘q’ button to change it to a construction line!
Step 4) Make the blue lines symmetric to the construction line and at a 9 degree angle
Step 5) The center of the circles should be dimensioned to 44:
Step 6) Each part of the circle on the left should be an extrude. The outermost starts at 10MM, then 15MM, 20, 25 MM:
Step 7) Connect the two end circles with a 2 MM extrude. The right side is 25 MM:
Step 8)create the variable as shown below:
Step 9) Add a fillet to all the circles edges. Set its amount to the variable len as shown. This video shows you how to use a variable and then change the variable:
Workspace Units: MM, use the front plane
Step 1) Create 2 line segments, centered at the origin (as always) and dimension them to 10 MM each
step 2) These should be angled at 45 degrees
Step 3) Add a 12 and 9 MM segments :
Step 4) Dimension the 2 angles to 140:
step 5) Connect with a tangent arc
Step 6) Add a 5 MM symmetric extrude
Step 7) Fillet the Edge of Extrude 1 in these 3 places:
Step 8) Final Filletted version:
Array Loops
Complete all the methods below. When you are done, copy and paste the testmethods.v5.1 into your class and run it to see if you have any obvious errors. The above code does not guarantee you a 100 but will help catch most of the common errors that students make.
Note: You may not use any external libraries (like Java.Arrays etc )or import any code. Everything can be done with just loops and variables.
int sumEveryN(int[] nums, int n)
Description:This method returns the sum of every n elements of nums ..
| Method Call | return value/output |
| sumEveryN( {1 , 2 , 3 , 4 }, 2 ) | 4( ie 1 +3) |
| sumEveryN( {13 , 42, 15, 33 , 44 , 16 , 52} ,3) | 98 ( ie 13 + 33+ 52) |
String[] doubleArr(String[] strs)
Description: This method returns a new version of strs in which each element now appears twice. This can be done with a for-each loop, which I believe is easier and more intuitive.
| Method Call | return value/output |
| doubleArr( {“a”,”b”,”c”} ) | {“a”,”a”,”b”,”b”, “c” , “c”} |
| doubleArr( {“math”,”ware”,”house”,”.com” }) | {“math”,”math”,”ware”,”ware”,”house”,”house”,”.com”, “.com”} |
int indexOf5(int[] nums )
Description:This returns the index of the first occurrence element 5 or -1 if 5 does not appear anywhere in the array.
| Method Call | return value/output |
| indexOf5( { 2 , 3 , 5 , 4 } ) | 2 |
| indexOf5( { 2 , 3 , 5 , 4, 5 } ) | 2 |
| indexOf5( { 2 , 3 ,7 , 4, 3, } ) | -1 |
More Sample calls and return vals
int indexOf(int[] nums, int num)
Description: This method returns the index value of the first appearance of num or -1 if num is not an element of nums .
| Method Call | return value/output |
| indexOf( {6,4 ,7,3, 4 }, 4) | 1 |
| indexOf( {6,4 7 ,3,2,7}, 7) | 2 |
| indexOf( {6,4 ,2,3}, 22) | -1 |
int[] randos(int start, int end, int howMany)
Description: This method returns an array of random numbers between [start,end] . Note make sure that each element in the new array attempts to make a new random int. Use Math.random() , do not use any other mechanism for finding a random number.
double meanBetween(int[] nums, int min, int max)
Description: This method returns the mean of nums ; however, this method only counts values within the range (min,max) as shown in the examples below:
Old versions:
