Posts Tagged ‘Soldering Iron’

This is a follow up post on the second version for how to modify a regular plug-in soldering iron to work with a digital temperature controller.


The goal is to find the right location for the thermocouple inside the soldering iron. Temperature readings can be affected by the smallest change in position. The location of the thermocouple is very sensitive. (more…)


Read Full Post »

This post shows how to add a K-type thermocouple to a 120 volt plug-in soldering iron for use with a PID temperature controller. This is a follow up to a previous post on the Soldering Iron PID Temperature Controller. Please see the previous post for more details on how to add a thermocouple to a plug-in soldering iron with a mica heating element. The method I used here was basically the same.


This second version has a few improvements. It uses a better soldering iron that gets hotter and heats up faster. The PID controller is able to work at higher temperatures than the previous version plus this version uses an SSR to switch the soldering iron on and off. The solid state relay has no mechanical parts to wear out plus it is capable of much more precise switching than a mechanical relay. (more…)

Read Full Post »

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.

Pulse timer controller for plug-in soldering irons

Pulse timer controller for plug-in soldering irons

Watching the LED of a high quality soldering station blink on and off while the soldering iron was maintaining stable temperature gave me the idea. It looked like it was going on and off with regularity in a rhythm. I thought, why not use a timer circuit to do something similar for a regular plug-in soldering iron? (more…)

Read Full Post »

This is a project for a do it yourself analog soldering station. The design is a variation on some low-end commercial units that don’t have a built-in temperature sensor in the soldering iron.


It’s made with a dimmer switch and a few other hardware store items. It is fairly inexpensive to make and the project can easily be completed in an evening. I needed a unit like this for some experiments I was doing with soldering irons. (more…)

Read Full Post »