Here’s Mike’s completed project DIY soldering iron pulse timer controller. He wrote a post on his blog detailing its assembly:
This is a follow up to a previous post on a way to get temperature control for a plug-in soldering iron without a temperature sensor. Instead of using a sensor to control the temperature, this unit sends power to the soldering iron in precisely timed pulses in a way that mimics the timing of how a temperature controlled soldering station does.
Project info at PCB Smoke blog.
Check out the video after the break.