Hello friends in this video I have made a Mini compact Radar with display, for that I have used HC-SR04 ultrasonic sensor, this sensor emit ultrasonic sound which came back to sensor after reflecting from an object,
and this reflecting signals are processed by Arduino and all the data visualization is displayed on 1.8" ST7735 display
if any object detect by radar it'll show in display in red line.
For this project I have develop a custom made PCB and get it manufactured from JLCPCB.com
JLCPCB is one of the top leader in PCB manufacturing.
This is the complete video of the proect you can watch here How I build this cool gadget at homme and hw nicely it works
There is four main components of this project
ARDUINO NANO is the brain of our project
HC-SR04 is ultrasonic sensor this sensor emit ultrasonic sound waves which human can't listen ,
this sensor generate some value in proportion to the reflected ultrasonic sound waves from the object,
on this we can also tell the distance of object from the sensor.
SG90 SERVO MOTOR is used to rotate ultrasonic sensor in 180 deg
ST77535 DISPLAY is our monitor to visualize all data on screen
Arduino nano :- https://amzn.to/2Eq3tSK
HC-SR04 ultrasonic sensor :- https://amzn.to/2SEU4vQ
SG 90 Servo :- https://amzn.to/2NG807N
1.8" ST7735 Dispaly :- https://www.instructables.com/How-to-Make-Mini-Radar-Arduino-Based/
I am using here a cutom made PCB using PCB for your project is very much important. you will get good result, neat and clean wiring and professional look for your project. I designe this two layer PCB and ordered it from JLCPCB I always prefer JLCPCB because there PCB prices are very cheap currently thay have Special offer: $2 for 1-4 Layer PCBs, free SMT assembly monthly and If you register yourself today on JLCPCB you will get $18 coupons exclusively So what are you waiting for just visit JLCPCB
Complete 3D files will be available at thingiverse https://www.thingiverse.com/thing:3465440
I have a Tevo Tarantula printer i have printed all parts on dark green PLA at 50 % infill
After printing all the parts or you can design your own model
if you don't have access to a 3D printer then you can use material like acrylic sheet or cardboard sheet.
First I have design the parts in CAD software, then I 3D printed those Parts using PLA filament you can download all the 3D files links are given above.
Then I arrange all the required electronics components. As you can see here, I used components like Arduino nano HC-SR04 Ultrasonic Sensor Tower pro servo motor 1.8” ST7735 DISPLAY 9V Battery
Then I soldered some header pins on PCB and placed components on to them
This PCB placed inside the 3D printed box this is the base portion of our radar
After placing all the components & battery inside the radar I placed the top cover to its place. The HC-SR4 sensor is connected with servo motor.
You can download the arduino code attached above Install this library in arduino IDE before compiling https://github.com/olikraus/ucglib