This shield allows any standard-size Arduino (not Nano) to control a (modified) toaster oven for reflow soldering. It reads a thermocouple and switches the toaster oven on and off using a solid-state relay, to follow a programmed temperature profile and reflow solder paste for SMT soldering.

This is only the shield. You will also need:

• An Arduino (Uno or Due or clones are fine -- 3.3- or 5-volt signaling). Not a Nano.
• A wall wart to power the Arduino.
• A toaster oven which you have modified to always turn on whenever AC power is applied. If you aren't qualified to do this, don't try.
• A solid-state relay rated to switch the toaster oven based on a 3VDC control signal, and wiring to connect these together safely. eBay is a good source.
• A type K thermocouple with a bare-wire tip (not shielded in a metal tube), such as this one.
• An LCD display (16x2 is enough) with an HD44780-compatible controller and a 16-pin male SIP header on the back of the PCB (ideally at the top edge). Again, eBay is a good source.

The instruction sheet is available here, and the Arduino sketch (i.e. software source file) is available here (right click, save link as...).

Reflow shield price: US $35.00 (including worldwide postage), plus sales tax in MA and NY

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