Hi I have a couple question concerning ultrasonic sensors, let me fist introduce my goal. The device I am prototyping needs to always be oriented in the direction of a specific target that is always in eyesight. The device will be using a stepper motor to change orientation. My best option I believe is ultrasound. The target would emit a ultrasonic pulse. The receiver would have 2 sensors, and the Arduino would simply check what sensor received the pulse first to know what direction to turn the stepper motor. It would correct direction until both sensors receives the pulse almost at the same time. I am looking for a use between 4m and 14m.
For prototyping I ordered HC-SR04. It has a 4m range witch would become 8m and I believe more since it would not be an echo that is measured but a direct signal.
- My strategy would be to deactivate the receiver ont the target and trigger the pulse every time the HC-SR04 allows it. On the receiver the emitter transducer would be desoldered so when both sensor would be activated they would be waiting from a pulse generated by the target. Would this work ?
- How long after the HC-SR04 sensor receive the pulse does it sends the data to the Arduino and is the delay constant ? Second question, I would eventually want to use other better range sensor that are made to be only receiver or emitter could you point me to that.
- Any suggestion about anything concerning this end goal ?
Thanks for the help and sorry for my english it is not my first language.