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Therm RTD

Therm RTD is an addition to the Therm PID Controller family, with support for RTD temperature sensors. RTDs (or Resistance Temperature Detectors) use a coil of fine wire made from a material (usually platinum, copper or nickel) that has a very predictable

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Therm: a Tiny PID Controller

Therm is a very small PID controller with an OLED display, thermocouple interface, and USB port. It can switch an external solid-state relay for driving large loads, or a transistor for driving small loads. When attached to a computer, it

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Immersion Heating with a Vacuum Tube

Recently I was doing some woodworking and wanted to try fuming a small test piece of oak with ammonia. The fuming process darkens the wood and gives it a nice aged, gray look. To speed the process up, I decided

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