A DIY Hotplate for soldering SMD components

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There are several ways to solder PCBs with SMD components. We have seen the oven, but there are also plates in which to place our board on top and wait for the solder paste to melt in order to solder the components on the PCB. In this project we will see how to build one starting from an old ironing boar.

The plate temperature is controlled by the thermostat present in the iron, instead to display the current temperature there is an ATMEGA328P, the microcontroller present on Arduino UNO, which measures the temperature via an NTC and displays it on an OLED display.

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