S1 2018, FYP 1 (WEEK 11)

Date: 13/4/2018

Activity: Research and findings

                Proposal report (chapter 3)

                Final FYP 1 briefing

ESP8266 IOT WI-FI MODULE

ESP8266

ESP-01.jpg

ESP-01 module by Ai-Thinker

Manufacturer    Espressif Systems

Type      32-bit microcontroller

CPU       @ 80 MHz (default) or 160 MHz

Memory              32 KiB instruction, 80 KiB user data

Input     16 GPIO pins

Power   3.3 V DC

The ESP8266 is a low-cost Wi-Fi microchip with full TCP/IP stack and microcontroller capability produced by Shanghai-based Chinese manufacturer, Espressif Systems.

The chip first came to the attention of western makers in August 2014 with the ESP-01 module, made by a third-party manufacturer, Ai-Thinker. This small module allows microcontrollers to connect to a Wi-Fi network and make simple TCP/IP connections using Hayes-style commands. However, at the time there was almost no English-language documentation on the chip and the commands it accepted. The very low price and the fact that there were very few external components on the module which suggested that it could eventually be very inexpensive in volume, attracted many hackers to explore the module, chip, and the software on it, as well as to translate the Chinese documentation.

The ESP8285 is an ESP8266 with 1 MiB of built-in flash, allowing for single-chip devices capable of connecting to Wi-Fi.

The successor to these microcontroller chips is the ESP32.

Features

Processor: L106 32-bit RISC microprocessor core based on the Tensilica Xtensa Diamond Standard 106Micro running at 80 MHz†

Memory:

32 KiB instruction RAM

32 KiB instruction cache RAM

80 KiB user data RAM

16 KiB ETS system data RAM

External QSPI flash: up to 16 MiB is supported (512 KiB to 4 MiB typically included)

IEEE 802.11 b/g/n Wi-Fi

Integrated TR switch, balun, LNA, power amplifier and matching network

WEP or WPA/WPA2 authentication, or open networks

16 GPIO pins

SPI

I²C (software implementation)[5]

I²S interfaces with DMA (sharing pins with GPIO)

UART on dedicated pins, plus a transmit-only UART can be enabled on GPIO2

10-bit ADC (successive approximation ADC)

Proposal report (Chapter 3)

CHAPTER 3: PROJECT METHODOLOGY   

3.1 Block Diagram           

3.1.1 Hardware Block Diagram   

3.1.2 Block Diagram Description

3.2 Flow chart   

3.3 Component and Equipment

3.3.1 Pulse Rate Sensor

3.3.2 Temperature Sensor (DS18B20)     

3.3.3 USB Cable

3.3.4 Internet of Things (IOT)     

3.3.5 Arduino Uno          

3.3.6 Finger Strap            

3.4 Circuit Design            

3.5 Software     

3.5.1 Arduino    

3.5.2 Internet of Things (IOT)     

3.5.3 MATlab

3.6 Cost Estimation        

3.7 Gant Chart