This usb dongle style temperature controller has been successfully used to control the temperature of an oven during reflow-soldering electronic circuit boards. It incorporates the MAX31855 14bit 0.25C resolution thermocouple to digital converter chip, and connects to a Type-K thermocouple and solid state relay (SSR), which together with a mini-oven form a self-assembled reflow soldering setup.
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| The SSR (not shown) connects to the screw-terms |
It can also be used simply to measure the internal temperature upto 255C of any domestic oven (not microwave), by omitting the SSR.
Custom pc software for either purpose has been written using Visual Basic language.
The temperature controller has also been designed to fit a typical dongle enclosure.
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