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Home Heat Hub

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Home Heat Hub

By Brian Lawes
In August 24, 2015
On Uni Project
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1.4 Home Heat Hub – Raspberry Pi

The initial experimentation was conducted using a Raspberry Pi Model B+ which performed well with
all attached hardware devices.
Multiple Python scripts were written to achieve a fully functioning thermostat with LCD and menu
control. The device was able to act as the webserver by configuring Apache and a MySQL database.
The web site also performed well as a control interface for the Raspberry Pi GPIOs, updating temperature and humidity readings to the web interface and controlling the heating relay via PHP
script. Going wireless was a simple task by using a USB Wifi dongle on one of the available Raspberry
Pi’s USB ports.

Raspberry Pi web interface

Figure 1.1 – Raspberry Pi Home Heat Hub web interface

The 16×2 LCD was wired up using 4-bit parallel data transmission lines.
However well the Raspberry Pi performed it was decided that it would not be a suitable choice of MCU
for this specific purpose. It is a highly over-powered, multipurpose tool and too expensive to use as a
prototype, the rational of the Home Heat Hub is to provide a low cost solution.

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Brian Lawes

A lover of how things work. Currently studying towards a BEng Computer Security & Forensics degree at Edinburgh Napier University. A Marine Mechanic to trade, also specialised in electrical/mechanical repair & maintenance.

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Contents

  • Abstract
  • Introduction
    • Background & Rational
    • Deliverables
  • Chapter 1- Design Choices
    • 1.1 Introduction
    • 1.2 Basic Schematic of Initial Design
    • 1.3 Hardware used during experimentation and design concepts
    • 1.4 Home Heat Hub – Raspberry Pi
    • 1.5 Home Heat Hub – ESP8266
    • 1.6 Home Heat Hub – Nano V3.0 with ESP8266
  • Chapter 2 – Design of the Home Heat Hub
    • 2.1 Introduction
    • 2.2 Hardware Design
  • Chapter 3 – Implementation of the Home Heat Hub
    • 3.1 Introduction
    • 3.2 Software Interface
    • 3.3 Interface Test Plan
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