Open Source Hardware
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How do you expect 2 layer PCB to be the same as 4 layer?What I mean is, for the version of the 2-layer board, is there a new version with the same modifications on the 4-layer board such as the dormant input and power board diodes?
1. Turn off.get!!thanks!!
2. Push and hold center button/encoder button.
3. Turn on.
4. Within 2 seconds release center button/encoder button.
...and when using encoder, from time to time the bootloader will turn on (depends on encoder's position). Soon the bootloader will be updated for this not to happen.I am very happy to hear that you are about to update the bootloader. When you update the bootloader, if it is convenient, please adjust the spi rate in the bootloader to 6 as well, otherwise there will be problems with some screens.
Even if youmake it show real room temperature, the iron's handle (where the cold junction really is) handle heats up a little, so in fact this heat-up of the front PCB is in fact beneficial to some degree.thank you！！
If there is no sensor in the handle itself (like PACE and Weller), nothing can be done to eliminate the problem completely.
Forget about fake HAKKO FG-100 - I have it - total crap! It shows 170 degrees while 63/37 solder is melting on it's sensor at it's eutectic point of 183 degrees. And it loads the tip. The smaller the tip, the larger difference there will be from when there's only a drop of solder on the tip.For the cold junction compensation part, when the room temperature is about 26 degrees, the measured value of the main board is 32 degrees, and there is a deviation of 6 degrees. I don’t know if this room temperature can be calibrated in the program to make the cold junction compensation relatively more accurate.
Get 63/38 solder with nothing else (melts at 183), and watch only when solder starts to melt on the tip! Then get pure lead (melts at 327.5) and watch it again.
Before starting to observe the melting point, wet the tip and clean it several times with what you will observing, in order not to have residue from something else on the tip.
And, if handle is at 40 degrees at the contacts - this is normal. Then 18 degrees are subtracted from tip's temperature. JBC tools does not have a temperature sensor in the handle so the only temperature that can be used for cold junction compensation is room temperature at front PCB's sensor. Nothing can be done about his
Fortunately in my enclosure the temperature goes to around 5-6 degrees above room, and this tracks the handle temperature to some degree.
That's why I am considering an option in the menu for room temperature override.
It will definitely NOT be able to drive Nano and most likely even Micro (C210/C120) on 42V, not to mention 48.That would be a shame, but now it’s a very powerful soldering station, looking forward to better performance
The intention of this project has never been the ability to drive kilowatts of power, but to drive most used modern iron tools upto 120-150W. And this will not change on my behalf.
You've got the schematics and the PCBs - be my guest and do it yourself. The back PCB will need COMPLETE redesign (including schematics), will be twice as big, and the front PCB will also need some redesign.
I dont know about T22, but JBC C470 are 250W 42V, which is 7ohm. This station can drive 7ohm at max 85W. What's the point given that C245 can be driven to 140?If you modify the back PCB to support 42V or 48V power supply, and use your 1/2 and 1/4 power control, is it able to support all JBC handles? This seems to be a good idea. Unisolder will become more and more powerful. ;）
An how do you expect me to make profile for something I cannot test and measure myself?