This is a diy built PCB reflow hotplate, utilising a PTC hotplate, my own STM32 Dev board as a control board, a 10k NTC thermistor for temperature stage control and a 16A off the shelf relay for power control. By utilising the thermistor, the hotplate is able to follow solderpaste reflow profiles and reach temperatures of over 250°C following said curve. This is the hotplate I use to reflow all my personal PCB projects.
