pxt-calliope/docs/lessons/charting.md
Michael Elliot Braun 0bcb9c16fa update lessons
2016-04-25 14:42:47 -07:00

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Markdown

# charting lesson
Create a charting app for simulating and measuring the acceleration applied to the micro:bit
## Topic
Acceleration
## Quick Links
* [Graphing Temperature](/lessons/chartingtemperature)
* [Graphing Acceleration](/lessons/charting/accleration)
* [Graphing Light Level](/lessons/charting/light-level)
* [Graphing Rotation](/lessons/charting/rotation)
* [Graphing Magnetic Force](/lessons/charting/magnetic-force)
## Prior learning/place of lesson in scheme of work
Learn the functions of **on data received**, **send number** and **receive number** and chart `plot bar graph` for `acceleration` in the "x" dimension.
## Documentation
```cards
basic.showNumber(0)
input.acceleration(Dimension.X)
led.plotBarGraph(0, 1023)
radio.onDataReceived(() => {})
radio.sendNumber(0)
radio.receiveNumber()
```
## Objectives
* learn how to repeat code in the background forever
* learn how to get the acceleration value (g-force), in one of three specified dimensions
* learn how to display a vertical bar graph based on the value and high value.
* learn how to register code to run when a packet is received over radio
* learn how to broadcast a number data packet to other micro:bits connected via radio
* learn how to read the next radio packet as a number data packet