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 a guide for making mini CNC plotter using old DVD drive stepper motor this machine can print up-to 40mm X 40mm I used here arduino nano & 2 piece  L293 dual motor driver IC as stepper motor driver The Pen mechanism of mini cnc collected also from old DVD driver (drawer part) For graphical user interface I have used a simple free Chrome extension named "Gcode sender" Download Gcode sender from here You need hardware  Old Dvd drive - 2piece ply wood 6X8 inch - 2piece Arduino nano 9g micro servo motor  vero board IC L293D - 2piece Male , Female header pins Terminal block LED 220 ohm resistor wire   Nut & screw   Assembling Hardware  First take out stepper motor from old DVD This video can help you  Mark on plywood for fit stepper motor mechanism & drill on mark. joint two ply wood like "L" using small piece of metal clamp  solder 4 wire on stepper motor connector points...

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 ...

This tutorial for beginner raspberry pi user .It is very easy way to install driver for 3.5 inch touchscreen LCD. Before install driver You need A Raspberry pi 3B with raspbian OS because this Lcd screen works with only raspbian OS 1.First Download Txt file from here Save it to your raspberry pi desktop 2.Make sure you have internet connection on your Raspi 3.copy upper part of text from downloaded text file & paste it to terminal emulator Now driver will install & Lcd turn on but HDMI will turn off LCD & touch is working after automatic restart  4.To turn off Lcd & active HDMI ,copy lower part text from Downloaded text file paste it to terminal emulator .Now HDMI will active & Lcd turn off This is full details video for installation driver

In this post I will describe how to make easy clap switch using arduino you can on/off light or fan by clap You need to make it - Arduino UNO Sound sensor module Single channel relay module Some male,female jumper wire Small bread board Ac bulb or Fan                     Connection diagram Connection of relay module with a/c Relay & sound sensor's VCC will connect to Arduino 5 V GND will connect to Arduino GND Soun sensor out pin connect to Arduino pin 6 Relay module's input Pin connect to Arduino pin7 Download code for arduino from here  Watch making video of this project

It is a very simple cellphone detector circuit designed using IC LM 324 op-amp it can also detect EMF ( Electromagnetic Frequency ) Parts list - IC lm 324 ( 14pin) 1k - 3 pcs resistor 470k resistor 10k preset Diode IN4148 - 2 pcs BC548b transistor 470pf ceramic capacitor Veroboard or Breadboard wire 9v battery                                                                   Transistor & IC pins                                                  Circuit diagram of emf detector The circuit on vero board                                             ...

In this post I want to describe How to connect all parts like brushed motor, throttle brake light, ignition switch via controller It is very easy to wiring e bike parts About Parts you need to make  & all details about electric bi - cycle Click here  You have to use a motor controller ( in my bike I used 24 volt controller) There are lots of wires coming out form the controller .we have to connect those wires to motor,battery,throttle,break ( optional) & ignition switch It is full wiring diagram of ebike Some important  Use 4mm wire to connect battery To use LED as indicator must use a resistor with LED For ignition switch you can use Mofet ignition switch Use good quality parts & wire If you do not have much knowledge about electronics , then take a professional help For details of new version electric bicycle click here