TechnoReview85

It is simple radar project using Arduino you need to make it .Arduino UNO 9G micro servo motor  Ultrasonic sensor hc-sr04 Bread board jumper wire  Download code & pde file from here Download processing IDE from here Connection- HC-sr04 Trig pin connect to Arduino Digital pin - D10 HC-sr04 Echo pin connect to Arduino Digital pin - D11 vcc to arduino 5V Gnd to Arduino Gnd Servo signal pin to Arduino Digital pin -D12 vcc to arduino 5V Gnd to Arduino Gnd After download Radar.zip file unzip it upload radar.ino file to Arduino using arduino IDE open radar.pde file using processing IDE change com port to your own com port witch is connected to Arduino UNO change resolution as per your computer resolution Now Run it Video of this project

It is an electronic project without programming or any micro controller you can make your own customized word's led sing board using this circuit in this project I have used shift resistor IC 74ls164 and IC 555 for animation. you can make led board with 8  letter words I make in my project "WELCOME " word it is 7 letter word. All components of this project are available at  https://lcsc.com I will provide also buying link of parts witch I used. Parts list - LED - 5mm    Buy IC - 555              Buy IC - 7805            Buy IC - 74LS164      Buy IC - ic base 8 pin    Buy              14 pin       Buy Diode - 1N4148      Buy Transistor bc547 b                 or 548 b  Buy Capacitor - 0.01      Buy     ...

Here I describe you how to make dual motor driver module for arduino ,Raspberry pi & other MCU usually we use this module to make Robot I use Home made PCB witch is drawn by marker Pen But you can use Laser Printer & toner transfer  method.     Parts List :- L 293D IC 100 mf/25v - 2pcs Resistor 220 ohm & 1K  terminal block - 2pcs male header pin  Copper clad board 4X5cm & ferric chloride  or PCb etching powder LED red & green Making PCB using marker pen-   Make hole using PCB drill                                            Draw this pattern on copper side using marker pen Now sink it in ferric chloride solution   If  you want to know more details please watch this video  Making PCB using laser printer :-  Save & Print this PCB layout o...

It is a tutorial about Iot based home automation using Blynk How it works : Here I make a customized circuit board to control 4 relays by esp8266 NodeMcu This circuit runs on DC 12 volt 1 amp power. when power on nodemcu connect to you router via WiFi & also connect with Blynk server Your smart phone send command to Blynk server & Blynk cloud server send command to nodemcu . The D0,D2,D3,D4 pin of nodemcu became high or low then relay turn on or off connected Ac appliances. You Need to make : Customized pcb ( I make pcb from  https://jlcpcb.com  They offer 10 PCBs in $2 Download gerber file from here & upload to jlcpcb website .build time 48 hours ) Esp 8266 NodeMcu Lolin 12v 1 amp power adapter Ic 7805 - 1 pcs Transistor Bc 548b - 4 pcs Resistors 10K - 4 pcs & 1K - 5pcs Diode IN4007 - 4pcs Relay 12V - 4pcs Led red - 1pcs & green - 4 pcs Capacitor 470uf/25V - 1pcs Female Header connector Terminal block - 4pcs ...

How to Make Electric Bike at Home ( Techno Review 85) I  have made an electric bicycle with speedometer from the brushed motor it can run 30 -25 km/charge & speed about 25km/h Let's start---  Basic needs - 1 ) 24 v DC Geared motor (MY1016Z) 2) controller 24v 3) Throttle 24v 4) battery 12v X2 (14 amp) 5) Dual freewheel ( I make it own) 6) chain 7) wire 8) a bicycle etc---                                            24 v motor,controller & thortole  Making videos on youtube                                 P art 1                                   Part 2                           ...

using  this easy circuit you can use any IR remote like TV,DVD player to turn on & off Parts List - IC - CD 4017 IC - 7805 ( 5v regulator) transistor - BC 548 B                   BC 558 capacitor - 1000 mfd /16 v                    100 mfd /16v                       0.1um resistor - 330 ohom x2                1k,33ohm,220k IR sensor TSOP 1738 or TSOP 1838 Diode   -  1N4007 Realy 6v vero board,wire, Circuit Diagram --   Pin out of transistor ,IC, Relay & IR sensor                                                      You tube video ---

It is a password protected door lock project using arduino Press # for clear then press the password ( in my case it is 1234) and press * (star) for confirm. now servo motor on and door lock will open .after 5 sec it will automatically close. Parts need- arduino uno 4x4 Matrix  keyboard servo motor jumper wire power bank or battery for power supply bread board normal door lock resistor 220 ohms Connection - key pad pin            Arduino digital pin           1             to              9         2             to              8       3             to              7       4             to           ...

It is a basic Arduino robot project with simple code Parts list- L293D Motor driver module HC hr 04 ultrasonic module Arduino uno Jumper wire usb cable ( for power supply from power bank) Power bank 2WD robot chassis ------------------------------------------------------------------ You can make chassis from this video Connections- Hc 04 tring pin connect  to Arduino digital pin - 12 Hc 04 echo pin connect  to Arduino digital pin - 11 L293d motor driver input for left motor connect to Arduino digital pin 2 &3 L293d motor driver input for right motor connect to Arduino digital pin 4 &5   the power source of the project  is 5v from the power bank Download Arduino  code here  after downloading open it with Arduino Ide and upload to Arduino uno board Project Video-

It is simple arduino  thermometer project You Need-- Arduino UNO or any other arduino board Nokia 5100 LCD Module Analog Temperature sensor LM-35 Jumper wires Bread board or vero board battery here I use nokia  pcd 8544 - 1.4.3 library ( download library ) after add library You can get code in sample of 8544 library                                                Schematic of this project

I is very easy science project for students you need - 2 dc motor ( 1 motor bigger than other watch video) switch,battery,cardboard,wire,electric connector & LED connection of motor to battery

It is very easy & simple way to make a walking robot at home parts list 2 x  L shaped gear motor Battery ( 9v or 3.7v lipo,or 4xAA ) card board wire switch 1 ml syringe connection diagram

It is simple basic arduino project you need Arduino Uno Dht 11 temperature & humidity sensor data cable & jumper wire  Please watch this video connection diagram arduino code #include <dht.h> dht DHT; #define DHT11_PIN 7 void setup(){   Serial.begin(9600); } void loop() {   int chk = DHT.read11(DHT11_PIN);   Serial.print("Temperature = ");   Serial.println(DHT.temperature);   Serial.print("Humidity = ");   Serial.println(DHT.humidity);   delay(1000); } Download Dht11 library Zip file

It is simple robo car made with IR proximity sensor. If IR sensor send signal to relay module then relay on and left motor stop ,robot turn left Right motor connected to battery + & - so right motor always on Parts list- Bo gear motor 100 Rpm IR proximity module single channel relay module plastic box jumper wire 3 X AAA battery or  4X rechargeable AAA battery or LI -po battery 3.7V wheel x2 castor wheel x1 please watch making video

Working principal of IR proximity sensor parts list- IR proximity sensor module  Single channel relay module  Bread board  Buzzer  Battery  3x AAA barrery or 5v dc supply  Jumper wire  Plastic box Bread board connection diagram - circuit diagram - Making video

easy home made laser security system or burglar alarm Also it is a good science project idea Parts need - Bread board or vero board Laser pointer L.E.D L.D.R Cl 100 or bc 548b transistor Resistor 1 k, 10K Buzzer Battery AAA x3 or used mobile phone battery

It is very simple way to make a wired remote control robo car at home I use to make this -- 1- L shaped Bo gear motor X2 2-wheels X 2 3- caster wheel 4- push switch x2 5-4 x AA battery 6-plastic box 7-cardboard 8-wire Please watch this making video

This is home made robot (It's looks is funny) mechanical section of this robot like traditional brush robot but  you can control it by light  parts list- transistor Bd 139 resistor 1k ohm  X 2 L.D.R L.E.D motor   jumper wire  bread board circuit diagram watch this making video