Basic IoT project using ESP8266 (nodemcu) and microPython

Requirement:

change 7-segment's number using (Mobile app or hardware buttons) and display number on both (7-segment and mobile App) in real-time, there are 3 buttons:

1. Increase
2. Decrease
3. Reset -to reset number to zero-

project video (click here to all videos)

1. Useful Tutorial

• 1. Python Tutorial
• 2. 30+ MicroPython Projects, Tutorials and Guides with ESP32 / ESP8266
• 3. MicroPython Basics
• 4. MicroPython tutorial for ESP8266 important tutorial
• 5. Easy Coding ESP8266 Tutorial playlist
• 6. MicroPython libraries

2. Getting Started

• 1. Getting started with MicroPython on the ESP8266 offical site
• 2. Install uPyCraft IDE : Windows PC Instructions
• 3. Flash/Upload MicroPython Firmware to ESP32 and ESP8266
• 4. Getting Started with MicroPython on ESP32 and ESP8266
• 5. MicroPython Basics: Load Files & Run Code

How to Load MicroPython on a Board

• Serial REPL
• WebREPL
  • programming page
  • rebo of webrebl to download page html for use offline
  • File Handling using python
  • Get a list of files with Python 3 (useing listdir in os module you get the files and the folders in the current dir)

    import os
    arr = os.listdir()
    print(arr)

GPIO & 7-Segmant init

• 1. Interacting with GPIOs
• 2. MicroPython: Interrupts with ESP32 and ESP8266
• 3. Debouncing in interrupt with nodemcu Micropython Steps
• 4. Delay and timing
• 5. How 7 Segment Displays work
• 6. Python OOP - Python Classes and Objects
• 7. MicroPython Basics: Loading Modules

Acess point set up

• 1. MicroPython: ESP32/ESP8266 Access Point (AP)
• 2. ESP32/ESP8266 MicroPython Web Server – Control Outputs
• 3. MicroPython: DS18B20 Temperature Sensor with ESP32 and ESP8266
• 4.MicroPython: ESP32/ESP8266 with DHT11/DHT22 Web Server (Weather Station))

Deep sleep Mode

• 1. ESP8266 Deep Sleep and Wake Up Sources
• 2. Power control micropython.org
• 3. ESP8266 Low Power Solutions
• 4. Low Power Weather Station Datalogger using ESP8266 and BME280 with MicroPython

MIT App Invertor

• 1. How to Use MIT App Invertor
• 2. ESP8266 Controlled with Android App (MIT App Inventor) using .lua
• 3. Build an ESP8266 Web Server – Code and Schematics (NodeMCU) using .lua
• 4. NodeMcu (ESP8266) Tutorial B-07: Get sensor data from NODEMCU with your Android phone
• 4. Username and Password
• 5. WiFi Manager Extension optional
• 6. Build an App with App Inventor which can display values of a connected sensor important
• 7. App Inventor 2 - ESP8266 GPIO Control with Nodemcu LUA
• 8. Reading QR code
• 9. Using MIT App Inventor Offline
• 10. Progress of App Inventor for iOS

ESP8266 Pinouts maping:

D0  = 16
D1  = 5
D2  = 4
D3  = 0
D4  = 2
D5  = 14
D6  = 12
D7  = 13
D8  = 15
D9  = 3
D10 = 1
A0 = 0

Note

• Built in Led On Pin D4 So I think it limit in current and the LED is active LOW
• PIN D0 is only input without PULL
• you can use Left side pin only as GPIO pins
• you have only pin A0 as Anlong pin

ESP8266 Pinouts

Symbol

Binary to BCD truth table

How to create sockets for server-client interaction

Differences between 3 Sleep Modes

MIT App Inventor for iOS

Pcb Deisgn

3D Model cleck here to view

Schmatic digram

Board