3D printing enables relatively fast prototyping of complex shapes. Stereolithographic 3D printing technology was the first additive technology. This technology uses UV light to harden photopolymer in desired spots. The layers are stacked on top of each other, creating a part on the production table. In the final thesis, we focused on the problem of the influence of temperature on the photopolymerization reaction. In the first part, we reviewed the literature and presented additive technologies and what effect has the temperature at which we print on the final product. Based on the established facts, we selected the appropriate method of temperature control and the components that will be used in the control system. We tested the system in a printer vat full of water. During the tests, we measured the water temperature and the PWM signal of the microcontroller. Based on the measurements, we optimized the PID control coefficients.
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