An ok-ish way would be to use a different connector with more pins and use a dedicated pin to set the ID.
For example, assign a known resistor value for each handle type and sense the voltage with the adc.
But again that needs hardware modding.
I think this is my point:
We want to choose the most sensible hardware mod. From a variety of options. And then implement the software support for that decision, in a unified firmware.
Because if we don't come together and agree the best hardware choice. Then different guys will each solve the problems in different ways. And there is no standard, the firmware is modded many ways for each. And it's then really confusing for others who want to come and find out.
We also want to devlop our own board, incorporating 'levels of' advanced features. So that we can populate the same pcb design with progressively more chips, etc. to add thos features not everybody wants.
And we have the same problem ther. Lets not have multiple variants of the design that implement these same features in completely different ways...
So for this we need a good open discussions for the pro's and cons of each choice. For example one way might technically be better than the other way. But result in higher BOM cost, so can that be justified?
How do it the Ksgers? I know some have the ability to use the JBC tips. Appart of cutting the TC trace or removing the resistor?
Yes... that is how it is on these blue Ve2.1S r2 pcb. Like cosin and myself. These is a trace at R11 on the pcb. So if the R11 pads are bridge joined together (0 ohm) it is in T12 mode. But when you cut that trace it becomes mode for the jbc T245. This is shown on floobydust schematic.
I think I remember some guy who moved that switching off the main pcb. Into his own simple mod. Maybe with a mosfet circuit to sense, or connect them. And make the switching happen, for example when each handle was plugged in. So that he could switch between them based on that. And have a default handle when both were plugged at the same time. As a hardware mod. But it was pretty simple and basic mod.
However another good question to know is if the KSGER pcb wiring for T245 was entirely correct. Richard Sims has put some useful details about them here, both the t210 and the t245:
https://github.com/Jan--Henrik/Otter-Iron-PRO/issues/16For example which pins to drive the heater, and sense the TC from. I forget right now. But its in the link above ^^. Also check against the T245 cross section photo:
https://github.com/dreamcat4/t12-t245-controllers-docs/blob/master/tips-and-handles/t245-c245/t245-tip-cross-section.jpgI perhaps this means sense the TC between c+ and gnd ?
And heat only between c+ and c-, not GND.
Wheras the construction of the C210 is different, and there must me switching. This is what Richard Sims is saying.
The real JBC stations have current sensing, so they know when the tip is not the correct one.
Yes.... this is a good way to check the heater resistance. With a shunt resistor. And measure that power.
Since we know it will vary between the T12 (9 ohm) and the T245 (2.6 ohm). Then we can use that to stop burning the tip in software. But what we don't have yet is the consensus to standardize that hardware mod. So that it is the same for everybody. Then the software only needs to implement 1 version of that. To make sure for example, there is no confusion and only 1 valid shunt resistor size (as a default, at least). Then it is actually safe for everybody. And a safe product to use, not to destroy the tips.
FOR the C245 / C210 auto switching, the guy who made the C (not pid) algorithm used an H bridge. That is a more expensive part. But it then let him have all that switching happen automatically. The 6 pin din has some pin id shorted between 2 pins.
Instead of an H bridge, maybe it would be cheaper to use some conventional magnetic relays. Or to use some mosfets together as switches. IDK.
The thing is to understand the trade offs, for BOM cost. And usability, and safety. And choose the best solution. It needs more discussion to really get a design that is good for everybody. Because different people have different opinions, and wallets. So finding the best overall trade offs, to have the best unified design... is not always what individual people will recommend.
I received the C245 handle, not awful but not great. The tip wouldn't get in at first, it was hitting the second contact and damaging the isolating plastic.
The contacts were too closed, also the plastic support had a pronunciated step that caused again the tip to not enter nicely.
After smoothing the plastic and slightly opening the contacts, now it seems to be doing well.
I see now what you mean by the isolating plastic. Those black step between the pins. Mine are not uniform, not even all the way around. And also it makes a sharp ridge.
Perhaps you can measure (for js02 bent tip), the distance in mm, from the end of the tip to the round metal collar, when fully inserted? Mine seems to stop @ 41mm.
It would be nice to check with you, to be sure it's correctly engaged:
No audible click... but after a scraping, then a feeling of less resistance. Then a soft stopping in the hand. When it gets to the end. The voltlog video says it is bad to push too hard.
Checking the resistance between pins, it seems like a good electrical connection.
FWIW those lengthwise ridge crimp lines look normal, because they also exist on the official JBC tips. Out best guess is that the manufacturer should be same chinese oem /from same factory. Thinking more towards a QC issues.
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