BY KERRY BARLOW
In Part 1, software and closed
loop theory for the wood stove
temperature controller was covered.
This article will detail the actual
hardware of the controller and
how everything interacts.
The wood stove controller may be built using any
method that is found easiest to work with. PCBs,
hand wiring, wood or plastic boxes all will work fine for
this project. I do not intend to go into specific details
regarding measurements, connectors, and pin-outs
because I fully expect the readers to be using their own
parts and ideas as they build this project. Follow my design
exactly, or pick and choose what features you wish to use.
■ FIGURE 1
The master control box (Figure 1) is made from a
wooden box sold by A.C. Moore. The remote slave display
(Figure 2) is mounted in a plastic project box. I used a tiny
plastic box to enclose the external DS1620 temperature
sensor (Figure 3). Do not forget! Anything used outdoors
must be waterproof.
consists of hundreds
of connections. For
mine, I chose a DB- 25
serial connector for
the low voltage pass
■ FIGURE 3
■ FIGURE 2