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| Controller unit with SSR and thermocouple wire connected |
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| Internal view - MAX6675 on mini board alongside PIC |
I have made another oven temperature controller in a convenient to use enclosure, which has a sloping surface for the back-lit liquid crystal display module. It looks quite professional. The circuit is the same as the earlier experimental version, ( posted on 11 November ), using a PIC microcontroller and MAX6675 temperature sensor chip. It is ready for integrating with the oven. The output of the 15 amp solid state relay ( SSR ) has to be connected in series with the mains lead to control the power. The thermocouple will be situated inside the oven eventually very close to, or actually touching, the circuit board which is being soldered.
I am thinking that it would be beneficial to add a programming interface to the controller so that I can re-program the embedded PIC in-situ.
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