Custom reflow hot plate - Custom PCB

In this video I continue my adventures with my reflow hot plate. This time I show you my freshly obtained PCB from PCBWay, I show you the assembly process and at the end I quickly test if the board works as intended.

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Some photos and description

You can get the PCB easily from PCBWay by clicking on any of the pictures. You will be redirected to PCBWay’s website via my affiliate link and you will be able to order the same PCB directly.

If you want to buy the parts I used, please use the following affiliate link:

Arduino Nano

1.8” TFT LCD

Rotary encoder

MAX6675 thermocouple module

230 V AC to 5 V 600 mA DC PSU

300 W heating plate

5 V 30 mm fan

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Bill of materials

Assembled board

Connectors

MAX6675 thermocouple module, AC input, heater output.

Complete board

Optocoupler and triac

Optocoupler

5V fan driver part

BD139 transistor-based switch

Input voltage selector

Based on the power brick (5 V or 12 V), one can select where the input voltage should go. In the case of 5 V, the voltage goes to the +5V pin on the Arduino. In the case of 12 V, the voltage goes to the VIN pin.

Top side of the bare board

Bottom side of the PCB

The power traces are thick to handle the high currents.

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