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

rename micro:bit to @boardname@

Browse Source
This commit is contained in:
Peli de Halleux
2016-11-01 17:44:37 -07:00
parent 9bc1e38345
commit 89406330cf
226 changed files with 697 additions and 750 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
docs/projects/timing-gates.md
View File

@ -8,17 +8,17 @@ This project explains the principles of timing gates using household materials.
## Timing gates
The two gates are connected to the micro:bit and can detect a car passing through.
The two gates are connected to the @boardname@ and can detect a car passing through.
![](/static/mb/projects/timing-gates/sketchgates.jpg "Sketch of the gates")
As the car passes through the gate ``0``, it sends an event to the micro:bit through the [on pin pressed](/reference/input/on-pin-pressed) block.
The micro:bit records the time in a variable ``t0``.
As the car passes through the gate ``0``, it sends an event to the @boardname@ through the [on pin pressed](/reference/input/on-pin-pressed) block.
The @boardname@ records the time in a variable ``t0``.
![](/static/mb/projects/timing-gates/sketchgate1.jpg "Sketch first gate")
As the car passes through the gate ``1``, it sends an event to the micro:bit through the [on pin pressed](/reference/input/on-pin-pressed) block.
The micro:bit records the time in a variable ``t1``.
As the car passes through the gate ``1``, it sends an event to the @boardname@ through the [on pin pressed](/reference/input/on-pin-pressed) block.
The @boardname@ records the time in a variable ``t1``.
![](/static/mb/projects/timing-gates/sketchgate2.jpg "Sketch first gate")
@ -34,7 +34,7 @@ By dividing the distance between the gates by the duration, we get the speed of
* Aluminum fail
* Double-side tape (carpet tape)
* 4 crocodile clips
* A micro:bit board and USB cable
* A @boardname@ board and USB cable
![](/static/mb/projects/timing-gates/materials.jpg "Materials")
@ -76,9 +76,9 @@ Connect a crocodile strip to each foil strip.
![](/static/mb/projects/timing-gates/connectsensor.jpg "Connecting sensor")
Connect the crocodile plugs to the ``GND`` and ``P0`` pins on the micro:bit.
Connect the crocodile plugs to the ``GND`` and ``P0`` pins on the @boardname@.
![](/static/mb/projects/timing-gates/connectcrocs.jpg "Connecting the micro:bit")
![](/static/mb/projects/timing-gates/connectcrocs.jpg "Connecting the @boardname@")
The gate is ready to use! Your circuit should look like the picture below:
@ -87,7 +87,7 @@ The gate is ready to use! Your circuit should look like the picture below:
## Detecting the car with code
The micro:bit provides an event [on pin pressed](/reference/input/on-pin-pressed)
The @boardname@ provides an event [on pin pressed](/reference/input/on-pin-pressed)
that is raised when a circuit between ``GND`` and a pin is detected. The circuit conductor could be a wire or even your body!
We will attach a foil to the bottom of the car. When it passes over the gate, it connect both foil strips, close the circuit and trigger the event.
@ -140,7 +140,7 @@ Repeat the same process with tape and foil to build the first gate.
![](/static/mb/projects/timing-gates/sensor2.jpg "Double foil sensors")
Connect the crocodile plugs to the ``GND`` and ``P1`` pins on the micro:bit.
Connect the crocodile plugs to the ``GND`` and ``P1`` pins on the @boardname@.
![](/static/mb/projects/timing-gates/sensormicrobit2.jpg "Sensor and microbit")
@ -182,7 +182,7 @@ https://youtu.be/N4bWQcu6yWs
## Computing time
The micro:bit has a clock that measures time precisely. It measures how many seconds the micro:bit has been on.
The @boardname@ has a clock that measures time precisely. It measures how many seconds the @boardname@ has been on.
We will record the time where each gate is tripped in variables ``t0`` and ``t1``.
We take the different between ``t1`` and ``t0`` to compute the duration between the gates.