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pxt-microbit Accessibility PR (#529)

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* Accessibility changes
This commit is contained in:
Sam El-Husseini
2017-09-07 13:42:08 -07:00
committed by GitHub
parent 3f87576a50
commit e3975e65e5
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docs/device/servo.md
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@ -1,10 +1,10 @@
# Equipping a microservo with Crocodile clips
### ~ hint
## ~ hint
If you are running a class or activity, you should consider preparing all servos before hand.
### ~
## ~
## Using a microservo with the @boardname@
@ -20,7 +20,7 @@ and a **Male jumper (pig tail)** on the other end. You can purchase bundles of s
https://youtu.be/XtzsydSTXEg
### Materials
## Materials
* 1 Crocodile clip cable
* 1 male (pig tail) cable
@ -29,13 +29,13 @@ https://youtu.be/XtzsydSTXEg
Simple cut the cables, strip them, thread the cables together and cover with the shrink wrap.
### ~ hint
## ~ hint
It is very **important** to ensure that there is a good connection between the 2 cables.
If the connection is weak, the microservo will not receive enough current and it will not work.
**If you have access to a soldering iron, we strongly recommend to solder this connection.**
### ~
## ~
## Direct connection
@ -48,32 +48,32 @@ You can also connect your crocodile clips directly to the servo.
* 3 crocodile clips, yellow, red and black.
* 1 micro servo 9g (SG90)
### Step 1: cutout the connector
## Step 1: cutout the connector
Using the cutting pliers, cut out the dark plastic connector.
![](/static/mb/projects/inchworm/servo1.jpg)
### Step 2: strip out cables
## Step 2: strip out cables
Using the plier or a wire stripper, strip the plastic from the cables.
![](/static/mb/projects/inchworm/servotrim.jpg)
### Step 3: threading the servo cablers
## Step 3: threading the servo cablers
Thread the servo cables.
![](/static/mb/projects/inchworm/servo3.jpg)
### Step 4: crocobile clip
## Step 4: crocobile clip
Cut a crocodile cable in two and strip out the casing.
If possible try to use the same cable colors as the servo!
![](/static/mb/projects/inchworm/servo4.jpg)
### Step 5: thread cables together
## Step 5: thread cables together
Place the cables next to each other
@ -83,27 +83,27 @@ Place the cables next to each other
![](/static/mb/projects/inchworm/servo6.jpg)
### ~ hint
## ~ hint
It is very **important** to ensure that there is a good connection between the 2 cables.
If the connection is weak, the microservo will not receive enough current and it will not work.
**If you have access to a soldering iron, we strongly recommend to solder this connection.**
### ~
## ~
### Step 4: protect the connection
## Step 4: protect the connection
Protect the connection with shrinkwrap tubes, electrical or duct tape.
![](/static/mb/projects/inchworm/servo7.jpg)
### Step 5: repeat for all cables
## Step 5: repeat for all cables
Repeat the same process until all cables are connected.
![](/static/mb/projects/inchworm/servo8.jpg)
### Step 6: testing!
## Step 6: testing!
It's time to test that your connection are all proper and that the servo will function **when the @boardname@ is powered by battery**.
@ -111,13 +111,13 @@ It's time to test that your connection are all proper and that the servo will fu
![](/static/mb/projects/inchworm/circuit1.jpg)
### ~ hint
## ~ hint
When attaching the crocodile clips to the pins, don't hesitate to grab the side of the board with the jaws.
![](/static/mb/projects/inchworm/circuit2.jpg)
### ~
## ~
* Download the following code to your @boardname@