book

ESP8266 Internet of Things Cookbook

by Marco Schwartz

April 2017

Intermediate to advanced

268 pages

5h 36m

English

Packt Publishing

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What this book covers

Getting readyHow to do it…How it works…There's more…See also
Downloading the example codeDownloading the color images of this bookErrataPiracyQuestions
Introduction
Getting readyHow it works…See also
Available optionsWhat to choose?There's more…See also
Required componentsSensorsDHT11PhotocellSoil humidity sensorActuatorsRelaysPower switch tail kitWater pumpBreadboardJumper wiresMicro USB cableSee also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…There's more…See also
The Board is not visible from the Arduino IDEThe board cannot be configured from the Arduino IDEThe board does not connect to your local Wi-Fi network
Introduction
FeaturesPin configurationPower pinsSerial pinsI2C and SPI pinsGPIO pinsAnalog pinsControl pinsHow it works...See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…There's more…See also
The analog pin cannot measure high voltagesThe board stops working when things are connected to some pinsThe board keeps on crashing and resettingThe board produces gibberish on the serial monitor when I rest it
Introduction
Wi-Fi connectivityReal-Time Clock (RTC)Over the air updateLow power managementWorking with filesSee also
Getting readyHow to do it…How it works…There's more…See also
Flash memoryFilesystem memory managementSetting up the ESP8266FS toolThere's more…See also
Getting readyHow to do it…How it works…There's more…See also
Over the airSecuritySafetySee also
Getting readyHow to do it…How it works…There's more…See also
The Arduino IDE does not show the OTA portThe library no longer compilesThe txt file in my filesystem only holds one value even after saving several values in it
Introduction
MicroPython & the ESP8266See also
Discovering MicroPythonAuto-indentAuto-completionInterrupting a running programPaste modeSoft resetThe special variable _ (underscore)Raw modeSee also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…There is more…See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…See also
A library can't be usedThe menu to upload files to the ESP8266 is not visibleThe board can't be configured via OTA
Introduction
Sparkfun ESP8266 thingAdafruit feather HUZZAHNodeMCU ESP8266Wio LinkSee also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…There's more…See also
Locking your thingsSee also
Getting readyHow to do it…See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…There's more…See also
The board is not connecting to the Wi-Fi networkThe lock feature on dweet is not workingThe alert feature on dweet is not workingThe widgets on my dashboard do not display readings
Introduction
See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…There's more…See also
The board is not connecting to the Wi-Fi networkThe generate code button on Temboo returns an error when pressed the second timeThe Temboo sketches bring up errors when I try to compile themAll my applets on IFTTT are being activated when the trigger is firedThe IFTTT SMS service is not working
Introduction
See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…There's more…See also
Getting readyHow to do it…How it works…See also
The board is not connecting to the Wi-Fi networkThe board is not connecting to Adafruit IOThe board receives more than one reading or different readings from what was sentMy board is not successfully creating a hotspot

Content preview from ESP8266 Internet of Things Cookbook

M2M alarm system

In the previous chapters, we looked at the different ways of achieving M2M communication between two ESP8266 boards. In this recipe, we will look at how to implement M2M communication in an IoT project. To do that, we will create a simple M2M alarm system with one ESP8266 board connected to a DHT11 sensor and the other connected to a buzzer. The alarm will be triggered when the temperature reading drops below 20 degrees Celsius.