Today’s 3D model is the recently released Soldering Iron Driver v1.5. For now we’re only selling PCBs for $7 at Seeed. The project is purely experimental, and only supported as far as the community is willing to support it. The board is through-hole only, requiring a 24V AC fused mains transformer.
The completed PCB is the heart of a soldering station, able to control several types of name-brand (and clone) soldering iron pencils. The key to this universal design is the analog front-end which is capable of reading both thermocouple and PTC temperature sensors commonly used in most soldering irons.