Universal soldering iron driver update

Posted on Thursday, September 22nd, 2011 in project logs by Ian

arhi added PID control to the DIY soldering station. This graph shows that the temperature stays solid even on a wet sponge and in a glass of water:

As you can see 280sec into the test I pushed the soldering iron on the dump sponge and held it there until 320sec then I let it “rest” up a bit and then I pushed the tip into the glass of water for 20-30sec .. As you can see the output pwm gave it bit more juice and the temperature didn’t miss targeted 250C by nothing serious. PWM output is only 0-15 levels so not a very high resolution but seems more then capable to keep this baby spot on (0.1C is the play during stable time, when you solder it moves ~0.3C +- that’s not noticeable on this graph, and strong cooling like sponge/water get it to skip 5-6C but nothing significant). The data on graph is sampled in every ~100-110ms while PID routine is called only once per second.

Via the forum.

This entry was posted on Thursday, September 22nd, 2011 at 1:21 pm and is filed under project logs. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “Universal soldering iron driver update”

  1. Sam says:

    How were you able to graph your PID output?

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