Diy line sensor array for LIne follower robot

 Circuit Diagram

ultrasonic obstacle avoider car

In this tutorial, I am making  a custom obstacle avoiding robot 

you can directly print these PCBs from seeedstudio 

Seeed Studio Fusion PCB  service takes care of the entire fabrication process from PCB manufacturing,  parts sourcing, assembly and testing services, so you can be sure that they are getting a quality product. After gauging market interest and verifying a working prototype, Seeed Propagate Service can help you bring the product to market with professional guidance and a strong network of connections.

jumper    https://s.click.aliexpress.com/e/_dSRayV5

n20 motors              http://s.click.aliexpress.com/e/_dUKwfYM

https://amzn.to/3dkLvk7

ultrasonic module  http://s.click.aliexpress.com/e/_d66uQiU

https://amzn.to/2Yl9eMR

n20 motor socket  http://s.click.aliexpress.com/e/_dUJpEXq

https://amzn.to/2V2aqCO

n20 wheels http://s.click.aliexpress.com/e/_dXfpot2

https://amzn.to/2Br2rrG

l293d motor driver http://s.click.aliexpress.com/e/_dVSiYYY

https://amzn.to/2Nekggj

castor wheelhttp://s.click.aliexpress.com/e/_dShodxE

https://amzn.to/3eo9znq

Arduino uno                https://s.click.aliexpress.com/e/_dUb9laZ

https://amzn.to/2V2wFZ2

download the code from here

multisensor robot

in this tutorial, I am going to show you how to build a wifi controlled smart rover using nodemcu.

with this rover, you can observe the parameters of the robotic surrounding (light, temperature, humidity)in real-time with your smartphone

.first watch this  making video

how this works

we are using blynk application to control and read the rover with the help of internet we send data to blink server and blink server will send data to the target device(nodemcu) and vice versa

things needed

1. nodemcu
2. motors
3. robotic wheels
4. DHT 11 sensor
5. 4*1n4007 diodes
6. LDR

circuit diagram

code