THP Entry: System Design Document, Video and Requirements

A project log for HVAC auto circulation

Stabilizing temperature around a home efficiently when heating/cooling is not required

QuinnQuinn 08/19/2014 at 22:580 Comments

This log is intended to make clear all the entry requirement specifics in one place.  Other log entries provide more details on the project and design.

A block diagram of how it all connects is shown here:  (System Design Document)

The first prize video is also linked on the main page links, and here.

Some comments on the contest requirements:

This is hardware and software project where a completed functioning module will be built.

The module qualifies as connected in the BLE version via bluetooth for configuration and status monitoring from a smart phone, tablet or computer.  This is significant because it provides an easy to use interface for setup, as well as all of the advanced features discussed.

This project is being documented here, in build logs, parts lists and eventually build instructions.  Schematics, software and images will be provided here.

This project is fully open hardware and open software, with everything needed to recreate it located here.

The module will be moderately easy for a hacker to recreate, with all parts easily available, low cost, and easy to use.

The resultant prototype can be developed into a manufacturable product in kit or completed form for mass sale and use.

The product directly solves a real world problem, improving temperature consistency around a house while conserving energy.

This project can be combined with other projects, such as a whole house wireless temperature monitoring system, or zoned system to create something new.

It is innovative in that it solves a problem in a manner that is not otherwise done on the HVAC market.  No prior art could be found.

The basic model is extremely intuitive to use because it is hands and minds off once installed.  The BLE version is also intuitive with an easy to use setup and monitoring app for smart phones, tablets or computers.

More details which make up the design document are in the following project logs:

Module interfaces

Operating logic

Output switch interface

Powering the module