 Overview
To allow control of the heat input into thermal clothing. The
NanoControls unit uses a small microcontroller and simple two button
interface to provide a small, easy to use controller.
This product is under development.
Outline specification
- Short circuit and reverse battery protected (although not both
together!)
- Transient over-voltage protected
- Minimum 60W power handling at 12V
- Low quiescent (off state) current ~1mA
- Waterproof switches and electronics (IP67)
- LED status indicator flashes proportionately with the temperature
setting.
- 16 heat settings and OFF state.
- 20 second full power start-up boost to overcome thermal lag.
- Default to half power after start-up sequence.
- Pulse Width Modulated output frequency: 20Hz
Operation
To allow the user to quickly set the controller to a known state:
- Simple user interface with two colour coded buttons (RED for
"make it hotter", BLUE for "make it colder")
Each time a button is clicked it moves to the next heat setting.
- Press both buttons simultaneously to set the controller to half
power.
- Press BLUE for > 1second to switch OFF.
- Press RED for > 1 second to switch to full power.
Connections
Two "Figure-of-8" cables, each marked with a tracer. One
connects to 12V, it is highly recommended that a 10A maximum fuse be
included in the circuit. The other cable connects to the heater. Note that
the + is a common straight through connection.
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