December21st2018

Teaching sonar...

Mainly when designing lessons about sonar detectors I thought this would be useful for teaching.

December 21st 2018

Teaching sonar

Prototype super easy -

Check out circuit diagrams here

Adding an LCD ( plus a TTL converter to make it serial) so I can just display distance. No need to make it complicated. This is why I used a RaspberryPi zero.


The software is quite important to make this bad boy reliable.

Click for the code

Slowmotion

Display

The videos were filmed in slow motion and normal rate, really good teaching point if you get the pupils to film the sonar sensor and they will be able to hear the ultra sound at a lower frequency.

When finished I will box, and try and make resiliant and pretty looking.


The code available here

Anyone and everyone is welcome to use these resources.

Although not sure who would read them

You can contact me via the contact page if you have any questions or feedback.