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For anyone who might be interested I've uploaded my current project, a
wood-fired boiler and distribution loop controller, to Sourceforge as
the project 'bctl'. It's pretty bare-bones at the moment, though I am
currently using it for my home heating/dhw. I plan to add some user
friendly features, such as GUI configuration and monitoring, as time
allows. The project summary description is as follows:

- -----------

bctl is a C++ state-machine based boiler controller utilizing a 1-Wire
bus for sensors and I/O. It implements a multi-loop
circulation/distribution controller targeting a wood fired boiler
using hot water thermal storage and indirect heating of domestic hot
water. It includes provision for dumping excess heat to a secondary
distribution system, as well as provision for heat recovery during a
cool-down cycle.

The design is based on the 1-wire family of sensors and data I/O
components. The software package is written in C++ and utilizes the
owcapi and owlib facilities of the open-source owfs package for all
1-wire transactions.

The software architecture is based on the QP hierarchical state
machine framework developed by Quantum Leaps, and utilizes their QM
modeling tool for state machine template generation. QP is an
open-source package and QM is distributed free of charge for
non-commercial use.

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Paul Panish
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