Is it possible to find the distance of a robot to a human possible using bluetooth low energy (ble) device? This is required for a new robot which is being planned which should follow the user and also stop when it reaches the user without bumping him. Though I do not need to know the exact distance (inch level), atleast it should be capable of giving distance in 5-10 inch difference.
Read about iBeacons and the google's eddystone, but they seem to use mobile devices. I need to implement this using an avr microcontroller. Suggestions are welcome.
The distance can be monitored using a sharp IR sensor or ultrasonic sensor, but I need the robot to detect if I am within the radius rather than in-front approach with these sensors. Kindly help...