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"A person who never made a mistake never tried anything new" - Albert Einstein

Ultrasonic Sensor

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Ultrasonic Sensors

I got working on the ultrasonic sensor over the weekend, it's based on a design I found here. This design used very little components and not at all complicated (or at least so far I think it's not).

I was hoping to use the Velleman k8055 usb interface board with the ultrasonic sensor instead of the PIC and see how I get on with that.

I'll also try it with a PIC as I'll want to mount it on a Robot at some point and a PIC will be easier to position on the Robot. I'll probably use a PIC 16f627 as it's been the most useful for me so far.

Homemade Ultrasonic Sensor

Parts needed to make a homemade Ultrasonic Sensor

  • 1 x 22 uf (micro farad) capacitor
  • 1 x 10k resistor
  • 1 x 3k3 resistor
  • 1 x 33k resistor
  • 1 x 330 uH (micro henry's) inductor
  • 1 x 1N4007 diode
  • 1 x BD135 transistor
  • 1 x Ultrasonic Transmitter
  • 1 x Ultrasonic Reciever

Progress on the Ultrasonic sensor

I have been able to put together the components of the ultrasonic sensor on the bread board as can be seen in the picture below.

Homemade ultrasonic sensor ready for testing

I have been testing the sensor using the k8055 usb interface board but I have not managed to receive a usable signal as of yet but hopefully I will work it out soon and I'll post all the code up here for you to use. 

I haven't had a look at coding a PIC to work it yet so hopefully that wont be too difficult and I'll get it working over the next week or two.

 Homemade ultrasonic sensor ready to be wired up to the velleman k8055


A few videos from a friend

Here are a few videos which we were kindly allowed post showing an ultrasonic sensor in action. To find more of his videos you can look in the members contributions section here.