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Messages - minkok

1
Project logs / Re: Really universal soldering controller
Now I got what you mean - you have only the tweezers. I got mine more than half a year ago and at that time there weren't only tweezers at affordable prices. Anyway, I use the original tips and got extra YIHUA C120KD, both work very well. Maybe I can buy extra only the tweezers just to experiment with them.
2
Project logs / Re: Really universal soldering controller
Quote from: Doomedahab on
I managed to connect a pair of tweezers called "Sunshine S1", sourced from Aliexpress.
Hi @Doomedahab, That's Good info. I got WEP982D_I, which is basically the same ( it looks like the board is from the same source), with the same intention of using it here and having its station as a backup in case. Did you take some pics of the connector's connections? Maybe my wiring is different, and this will help me.
8
Project logs / Re: Really universal soldering controller
"I replaced ZD1, ZD2 and ZD4 with this zener diode:" The voltage over Z1 - 3v, Over Z1+Z2 - 6V.  Vvalley - around 5.5V no need to replace.
If all other AC-DC detect components are ok and you resoldered the MCU pins it is left only to erase the MCU and reprogram it again.
If that doesn't help take the oscilloscope and check VINT and Vacdc.
About the OLED board most likely you do not have oscillations - check with the oscilloscope too. Just in case cut the track to OLED supply pin OLEDVCC - if you will get the supply voltage. Check if you have OLEDVDD
9
Project logs / Re: Really universal soldering controller
Quote from: Morpheus1979 on
According to my order history i've bought exactly this one from Digikey:
LM2731XMF  Marking -  S51A
Quote from: Morpheus1979 on
I used this SS34-HF:
... Maybe the HF version of the diode does not switch fast enough!?
Typical junction capacitance 450pF at 1Mhz /4V , we use 1.6MHz / 7V- 9V,  not good choice
Quote from: Morpheus1979 on
As for the AC/DC recognition problem...
The components you use are ok. Check ZD1, ZD2, Q5, and resolder corresponding PIC legs by iron
12
Project logs / Re: Really universal soldering controller
For those curious about what it looks like, I published a picture (it is an older version 4.51), and it is very close to what already you have. The red cable in the picture is "Inp 32V", you need to solder a single pin (connector) between the DC-DC board and the "Inp32V" pad. That way, the upper board will be more stable, and with less cabling, we can get the desired result.
13
Project logs / Re: Really universal soldering controller
Hi, a small update has been made, the differences are:
-5v supply is fused
-When upper MOSFET is fully (semi) shorted – the controller cannot drive it, in the "power on"  state the protection circuit is not yet started, and high voltage will be supplied to the ID pin.
The solution for the first schematic is to disconnect the handle before supplying the power.
This update solves that. Here it is:

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