Snack Jar Alarm with ShaKey
Sick and tired of your snacks going missing? Then this guide is for you!
In this guide, you will learn to make a snack jar alarm with the ShaKey, by using a simple but cool Scratch trick together with some conductive tape and alligator clips.
Complete this guide to protect your snacks.
|Parts Used in This Guide|
Step 1 Examine your snack jar
Take a look at your snack jar. Does it have a lid that can be twisted and/or lifted off?
Where does the lid meet the rim?
Step 2 Paste conductive tape
Step 3 Attach thin jumper wire lead to conductive tape
Use a jumper cable! Connect it to the conductive tape.
Step 4 Attach alligator clip to jumper cable
Get out an alligator clip and attach it to the end of the wire as shown.
Step 5 Clip alligator clip to ShaKey space input
Next, attach an alligator clip to the ShaKey's 'Space' input
Step 6 Add conductive tape to jar
Now add more conductive tape!
Attach a piece of conductive tape as shown in the picture, where it runs from the inside all the way to the outside of the jar.
Make sure the two lines of conductive tape meet.
Step 7 Attach another alligator clip
Add another alligator clip to the lot!
Attach one end of the alligator clip to the conductive tape you just added to the jar.
Then make sure the other end of the alligator clip, is attached to 'Earth' on the ShaKey.
Step 8 Scratch
- Connect the ShaKey to your computer by using a microUSB cable
- Open up the Scratch editor!
- Grab a 'when green flag is clicked' block from 'Events'.
- Then grab a 'forever' block from 'Control.
- Next, get an 'if ... then ... else ... ' block. Place this under 'forever' block.
- Next, create a condition! We want to make it so that when the space input is pressed (lid attached to jar), no sound is played from the alarm. So get out a 'key space pressed?' block from 'Sensing' tab.
- Then from 'Sound' tab, get 'stop all sounds' block and place it in 'if'.
- Next, get a 'play sound ... until done' block and place this under 'else'.
- Finally, you can record your own alarm sound by clicking on 'record ... ' as shown in the second picture.
Now when the lid is taken off, your treats are safe from harm as the alarm will sound.
Download the Scratch code, here: Snack Jar Alarm Project.sb3
Replace the sound with your own recorded sound!