Radar Function using Ultrasonic

for addition object detection a simple function can be added using widely available SR04 Ultrasonic with PWM output to interrupt the vehicle at a set distance , this uses the SR04 Ultrasonic with ideal range of 2m and max 5m but because ultrasonic has a wider sensor arc its resolution is arbitrary at best and mainly use as low cost obstacle trigger detection.

Setting up the Bluetooth telemetry

Bluetooth setup with the USB TTL and Arduino IDE

Arduino IDE>Tools>Serial Monitor  (hold the Button while Plugging the USB) to go programming mode Set (Baud 38400) (Both NL & CR)

Hold Press when sending AT command (Version 5)

AT : check the connection

AT+VERSION : Check Version

HC-05 (Recommended)

AT+NAME=Change name    (Synerduino)

AT+PSWD=1234 (Version 2)

AT+PSWD=“1234” (Version 3) (Possibly works on Version 5)

AT+UART=57600,1,0 (for synerduino Radar)

Download Ultrasonic Radar Application

Note: is available in EXE and PDE formats – to use PDE format download the Processing Application form Processing.org

Firmware Hex file and Hex uploader

supports 328P boards Nano and Promini

Arduino/Processing.org sketch notes

change this value to change distance trigger

/set Distance to trigger the PWM Aux Switch in cm/ eg: 100cm
int inputdistance = 100; // set Distance to trigger the PWM Aux Switch in cm (change this to adjust trigger distance)