TechnoReview85

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 Making : 

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