By Daniel Eichhorn
The ESP8266 is a programmable chip just like the Arduino microcontrollers, however it may be simply hooked up to a WiFi community. This consultant enables you to start along with your first Internet-of-Things (IoT) undertaking: a crisp OLED demonstrate exhibits climate details on numerous side-scrolling screens.
In the 1st a part of the ebook we hide tips to setup the improvement setting. Summaries on the finish of every bankruptcy support to appreciate what has been entire. information containers clarify very important expressions and applied sciences to beginners.
New! In a moment half, simple construction blocks for programming the ESP8266 are defined: the constitution of a Arduino cartoon with the setup() and loop() features, tips on how to use the serial console, digitalRead and digitalWrite, interrupts and analogRead. Then we hide find out how to connect with a WiFi community and the way to load info from a HTTP net server. Six workouts support to get useful adventure with the subject: controlling the LED at the NodeMCU module, interpreting out the kingdom of the FLASH button with interrupts, examining the present price of the availability voltage and getting access to an internet server over HTTPS and verifying its authenticity with a SHA1 fingerprint. The routines and their strategies can be found on Github: you begin fixing the initiatives through filling in lacking components. when you get caught otherwise you are looking to seriously look into an alternate resolution simply open the answer sketch!
After this creation in ESP8266 programming we get our first great undertaking working: the ESP8266 WeatherStation! I clarify step by step what you'll want to do to demonstrate the present climate on your zone and a three day forecast.
In the final a part of the ebook 3 extra tasks are brought: a aircraft recognizing software which fetches details from the net concerning the planes which are above your head; a global clock which monitors occasions in a number of timezones including appealing icons; and do you need to degree temperature and humidity outdoors your place? The ClimateNode undertaking explains the way to acquire facts from a moment ESP8266, shop it within the cloud and demonstrate it in an extra body in your WeatherStation.
This booklet is for newcomers and bold programmers alike, yet a uncomplicated realizing of programming is definitely useful. as a way to start the next is suggested: a ESP8266 NodeMCU V1.0, numerous jumper wires, a USB cable, a SSD1306 0.96" OLED reveal and (optional) a DHT11 or DHT22 temperature/humidity sensor. those elements also are to be had as Starter equipment within the Amazon US shop. simply look for "ESP8266 IoT Starter package with OLED exhibit for Arduino IDE". when you reside open air the united states it's also possible to purchase the starter package from the writer on his web site: blog.squix.org
Content:
Introduction
Required Hardware
- ESP8266 Module
- OLED Display
- Wires and Cables
Tool Setup
- Download and set up the Serial Driver
- The Arduino IDE
- Install the ESP8266 device chain
- Open the Arduino IDE
- Selecting the proper Board
- Setting the proper Port
- Testing the Setup: WiFi Scanner
- Summary
ESP8266 Programming Basics
- Preparation
- The Arduino Sketch
- Hello international: The serial console
- Input/Output: GPIO pins
- Interrupts
- Measuring analog signals
- WiFi
- HTTP
The ESP8266 WeatherStation
- Installing the libraries
- Open the elements Station Example
- Getting the Wunderground API Key
- Configuring the elements Station
- Connecting the Hardware
- First Run
- Summary
Collecting and showing neighborhood Data
- The weather Node Setup
- Thingspeak Setup
- Programming the weather Node
- Displaying the information at the WeatherStation
Read or Download ESP8266 Weather Station: Getting Started Guide PDF
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Additional info for ESP8266 Weather Station: Getting Started Guide
Example text
One of the first simplifications was the NodeMCU LUA firmware which could interpret scripts written in the language LUA at runtime. The firmware also provided bindings into Espressif’s API into the LUA language so that the pins of the ESP8266 could be easily controlled with just a few lines of code. A few months later another huge simplification became available: the integration of the C/C++ API into the Arduino IDE! Suddenly it was possible to profit from the simplicity of the Arduino ecosystem, which not only provided a vast amount of libraries but also made the C programming start of your project a lot easier.
For the moment ignore the ThingSpeak settings. You might use it in a future project (have a look at the Outlook chapter). Now we are almost ready to get the weather station running on the ESP8266 for the first time. But we need to wire the display to the NodeMCU first. Connecting the Hardware The WeatherStation Kit comes with an OLED display that has four connectors: VCC , GND , SCL and SDA . They have the following meaning: VCC and GND are the power supply of the display. VCC is the positive supply voltage and GND stands for “ground”.
3” displays. Displays with SPI interface will consume more of your free GPIO pins. Wires & Cables You will also need some wires to connect the display to the ESP8266. In case you want to connect the display directly the NodeMCU you will need at least four female-to-female jumper wires, since both the display and the NodeMCU have male pin headers. The wires don’t need to be long, 4” (10cm) are usually enough. To program the ESP8266 module you will also need a USB cable. In case of the NodeMCU this cable should have a micro-USB connector on the module side and a normal USB connector for your PC or Mac.