900M/T12/JBC + heat gun soldering controller

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Re: 900M/T12/JBC + heat gun soldering controller

Postby Contemplator » Sat Jul 15, 2017 11:46 am

Could you please describe the calibration procedure in more detail?
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Re: 900M/T12/JBC + heat gun soldering controller

Postby projector42 » Mon Jul 17, 2017 1:18 pm

try this:
- set multiplier/slope irTmul=1.00, disable cold-junction compensation (setTcold=0.1);
- attach external thermometer thermocouple to iron tip or connect thermocouple to gun's channel (isolate junction from tip with Kapton tape);
- ratio (Tmeasured - Tambient)/Tset - is the new multiplier;
- enable cold junction compensation, correct temperature shift with corTirn parameter.

example:
Code: Select all
Tset       Tmeasured-Tambient                   Ratio
50          72                                   1.44
100         145                                  1.45
150         220                                  1.46
200         295                                  1.47

So, for working temperature range 200..280 degrees set irTmul=1.45..1.47
Last edited by projector42 on Sat Jul 22, 2017 1:40 am, edited 3 times in total.
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Re: 900M/T12/JBC + heat gun soldering controller

Postby Contemplator » Thu Jul 20, 2017 8:26 am

Thank you very much for your help. I understood the temperatures. For a long time I chose PID co-factors for a "hair dryer" :). Can there be a simple, understandable method for configuring PID?
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2017-07-20 15.06.26_thumb.jpg
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Re: 900M/T12/JBC + heat gun soldering controller

Postby edcrane » Thu Jul 20, 2017 10:52 am

Hi
Great work.
I want to build this Project, and wanted to ask if anybody would share the pcb files for the 3 channel version to print it out.
I have only found the picture from kicad.pcb

Thanks
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Re: 900M/T12/JBC + heat gun soldering controller

Postby projector42 » Fri Jul 21, 2017 4:14 am

Can there be a simple, understandable method for configuring PID?

experimentally, for iron: Ki=[5..25], Kp=(Ki * [5..20]), Kd=(Kp / [1.5..3]).
Start from maximum values, decrease proportionally until overshoot/oscillation vanishes.
Use charting program for continuous observation
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Re: 900M/T12/JBC + heat gun soldering controller

Postby projector42 » Fri Jul 28, 2017 4:10 am

pcb files for the 3 channel version to print it out
Postscript / PNG / Gerber:
Attachments
mcu_stm32f0_ssop20-02.zip
(501.84 KiB) Downloaded 31 times
fan1-f030-01.zip
(244.52 KiB) Downloaded 30 times
iron2-f030-01.zip
(300.79 KiB) Downloaded 27 times
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Re: 900M/T12/JBC + heat gun soldering controller

Postby projector42 » Thu Oct 12, 2017 1:17 am

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