3 ultra-sonic sensors for 11€, in eBay, really good pricing.
Will be probably used in my project if they interact with each one, if they do I will need to spend more than 50€ in 3 sharp IR distance sensors.
3 ultra-sonic sensors for 11€, in eBay, really good pricing.
Will be probably used in my project if they interact with each one, if they do I will need to spend more than 50€ in 3 sharp IR distance sensors.