Simple DIY JBC soldering station

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Re: Simple DIY JBC soldering station

Postby nickxab » Wed Jun 04, 2014 1:02 pm

Yeah me too ! It's one of the best DIY SID :)
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Re: Simple DIY JBC soldering station

Postby nickxab » Fri Jul 25, 2014 8:00 am

any news about this project ? :)
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Re: Simple DIY JBC soldering station

Postby KG7AMV » Mon Apr 20, 2015 1:44 am

I am following this... I would like to build vs buy!
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Re: Simple DIY JBC soldering station

Postby gregio » Thu May 21, 2015 12:21 pm

any update
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Re: Simple DIY JBC soldering station

Postby Kostass13 » Sat Jun 13, 2015 10:48 pm

hi,
please can i have the scematic plan
and the hex ???
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Re: Simple DIY JBC soldering station

Postby grigorilin » Sat Dec 12, 2015 5:54 am

Hi,
Does anyone have information about this project - will go on or not ?
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Re: Simple DIY JBC soldering station

Postby jry » Fri May 20, 2016 11:00 pm

Yes, I have some information.

Breadboard from my pictures is disassembled and stored in my drawer. It wasn't very good prototyping platform due to parasitic capacitance and layout I used. I don't say it couldn't be done, but I hit several problems. I also don't use ATmega for my projects anymore, switched to STM32 MCU family.
Last edited by jry on Sat May 21, 2016 1:47 am, edited 1 time in total.
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Re: Simple DIY JBC soldering station

Postby jry » Sat May 21, 2016 12:21 am

Another not-so-good idea was TRIAC used as heater switch. With C245 tip running on full power (Vrms=21V with my transformer) we are talking about dissipated power 6.5W, 1.3V (rms) voltage drop on TRIAC.
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triac_switch.png
Last edited by jry on Sat May 21, 2016 2:38 am, edited 1 time in total.
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Re: Simple DIY JBC soldering station

Postby jry » Sat May 21, 2016 1:38 am

But why not try the TRIAC version anyway, just for fun. Probably simplest JBC T245 and T210 driver possible. Works fine with small TRIAC heatsink for ordinary soldering. For high thermal tips such as C245966 you would need much bigger heatsink (for dimensions see ST AN533 or Semiconductors AN10384).
Attachments
jbc_triac_driver.png
jbc_triac_a.jpg
jbc_triac_b.jpg
jbc_triac_c.jpg
Last edited by jry on Sat May 21, 2016 2:38 am, edited 1 time in total.
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Re: Simple DIY JBC soldering station

Postby jry » Sat May 21, 2016 2:38 am

Next logical step is replace TRIAC with two back to back MOSFETs. Power dissipation when running with 50% duty cycle is 40mW per one MOSFET. So with 100% duty cycle and two MOSFETs it is 160mW total. Compare it with 6W on TRIAC version and it is clear MOSFETs are better solution - no heatsing required, could sit directly on PCB.

tbc...
Attachments
jbc_mosfet.png
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Re: Simple DIY JBC soldering station

Postby jry » Wed Jun 15, 2016 5:19 am

MOSFET version works just fine! It takes about one minute to heat up 180g copper block to melt solder. MOSFETs temperature goes up to 60°C in this case.
Attachments
jbc_mosfet.png
mosfet_1.jpg
mosfet_2.jpg
mosfet_3.jpg
mosfet_4.jpg
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Re: Simple DIY JBC soldering station

Postby umbro » Tue Sep 27, 2016 9:32 am

Nice work
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Re: Simple DIY JBC soldering station

Postby derdabastelt » Tue Dec 13, 2016 4:54 pm

jry wrote:MOSFET version works just fine!

Hi!Awesome work! i tried it with an AVR but the PID code do not work at all.. :( *"!§!"!"*
Would you be so kind an provide us the source or the project for the STM microcontroller?
That would be nice!
Thanks!
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Re: Simple DIY JBC soldering station

Postby psisop » Tue Mar 14, 2017 1:41 pm

Hi where i can take wirmware for ur progect on STM32F103C8BOARD? or its secret information?
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Re: Simple DIY JBC soldering station

Postby mrjoda » Mon Mar 20, 2017 11:59 am

hi, board is STM32F103C8T6 from ebay... I bought it and i must say : "it is piece of crap". Errata sheet is long as toilet paper. I spend a few days trying ADC manage to work but, no... simply no.... internal capacitor from AD integrator inject huuuuge amount of noise to ADC input (ADC1,ADC2, all channels !!! ) and it cause 1,6V offset (with 100k load on inputs drop to 0,6V). I2C is almost unusable. And so on...

for me, bad choice
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PA4+100k_stat.png
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