c_meyer/pxt-calliope
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

pass over LED screen

Browse Source
This commit is contained in:
Tom Ball 2016-06-13 21:42:55 -04:00
parent 23c4087830
commit 713dfec949
1 changed files with 14 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
docs/device/screen.md
View File

@ -3,7 +3,13 @@
The micro:bit LED screen The micro:bit LED screen
```sim ```sim
basic.showString(" "); basic.showLeds(`
# . # . #
. # . # .
# . # . #
. # . # .
# . # . #
`);
``` ```
The micro:bit LED screen consists of 25 red LED lights arranged in a 5X5 grid (5 LEDs across by 5 LEDs down). The micro:bit LED screen consists of 25 red LED lights arranged in a 5X5 grid (5 LEDs across by 5 LEDs down).
@ -14,15 +20,15 @@ You use ``x , y`` coordinates to specify a particular LED in the grid; where ``x
Here are the x, y coordinates for the LEDs in the 5X5 grid: Here are the x, y coordinates for the LEDs in the 5X5 grid:
`0, 0` `1, 0` `2, 0` `3, 0` `4, 0` `(0,0)` `(1,0)` `(2,0)` `(3,0)` `(4,0)`
`0, 1` `1, 1` `2, 1` `3, 1` `4, 1` `(0,1)` `(1,1)` `(2,1)` `(3,1)` `(4,1)`
`0, 2` `1, 2` `2, 2` `3, 2` `4, 2` `(0,2)` `(1,2)` `(2,2)` `(3,2)` `(4,2)`
`0, 3` `1, 3` `2, 3` `3, 3` `4, 3` `(0,3)` `(1,3)` `(2,3)` `(3,3)` `(4,3)`
`0, 4` `1, 4` `2, 4` `3, 4` `4, 4` `(0,4)` `(1,4)` `(2,4)` `(3,4)` `(4,4)`
The x, y coordinates for the LED in the centre of the grid are `2, 2`. Starting from `0, 0` count over 2 columns and then down 2 rows. The x, y coordinates for the LED in the centre of the grid are `2, 2`. Starting from `0, 0` count over 2 columns and then down 2 rows.
@ -35,7 +41,8 @@ Since the row and column numbers start at 0, an easy way to figure out the x, y
Use [plot](/reference/led/plot) and [unplot](/reference/led/unplot) to turn a LED on or off Use [plot](/reference/led/plot) and [unplot](/reference/led/unplot) to turn a LED on or off
```blocks ```blocks
led.plot(0,0) led.plot(0,0);
basic.pause(1000);
led.unplot(0,0) led.unplot(0,0)
``` ```