I created this ultrasonic Parking Assistant using an ATTINY85 and the ultrasonic distance sensor from my arduino kit. It defaults to a 2 meter parking distance, but pushing the button on the outside of the box will let it save the current distance as the target.
As a driver approaches, it wakes up, displaying a green light until the driver is within a meter of the parking stop point, and displays red once the car is on that point or past it. After 10 seconds of inactivity, the light turns off to save power, and the refresh rate goes down from hundreds of times a second to once every half second. If it notices a change of more than 10 cm (to avoid a hair trigger) it wakes up.
I 3d printed a little box for it, and will be giving it to my dad for Christmas.
I created this ultrasonic Parking Assistant using an ATTINY85 and the ultrasonic distance sensor from my arduino kit. It defaults to a 2 meter parking distance, but pushing the button on the outside of the box will let it save the current distance as the target.
As a driver approaches, it wakes up, displaying a green light until the driver is within a meter of the parking stop point, and displays red once the car is on that point or past it. After 10 seconds of inactivity, the light turns off to save power, and the refresh rate goes down from hundreds of times a second to once every half second. If it notices a change of more than 10 cm (to avoid a hair trigger) it wakes up.
I 3d printed a little box for it, and will be giving it to my dad for Christmas.
Very cool! I’m always looking for new project ideas and this is a great one. Does the ultrasonic distance sensor vary with temperature?