hi all
can anyone please help me make an ultra sonic proximity sensor. ive looked almost everywhere on the net for some schematics or circuit diagrams or instructions or explanations but it seems to be a lost cause.
i am building an obstical avoiding robot and i want to build a completely anolog ultrasonic sensor. i believe the main problem is the reciever. the range only needs to be a maximum of 20cm or 8 inches. please keep in mind i want to make this as cheap and simple as possible.
any help would be apreciated. thanx.
grim.
can anyone please help me make an ultra sonic proximity sensor. ive looked almost everywhere on the net for some schematics or circuit diagrams or instructions or explanations but it seems to be a lost cause.
i am building an obstical avoiding robot and i want to build a completely anolog ultrasonic sensor. i believe the main problem is the reciever. the range only needs to be a maximum of 20cm or 8 inches. please keep in mind i want to make this as cheap and simple as possible.
any help would be apreciated. thanx.
grim.