@tatelThank you very much for the advice.
About the calibration of the tips, however, it is not a problem, I buy the calibration device that you recommended, to start with the clone tips will be fine, without calibration it is impossible to understand at what temperature the tip is, usually I have seen that they solder around 300 °, it depends on the components obviously.
Regarding the tin, 60/40 in general is easier to find, I found some spools of 63/37 tin but it is of low quality, the branded one costs quite a lot, since there are no big differences I will use the 60/40 with a thickness of 0.8
As for the acronym IIRC obviously I did some research on Google and it appears If I Recall Correctly, so it means: "If I remember correctly" but I'm not sure.
EDIT :They answered me in the discussion you indicated, they told me to check the github, at this point is it better to take the T12-958 v2 or which model ?
https://it.aliexpress.com/item/1005002724765690.html?spm=a2g0o.productlist.main.3.3d43hoVrhoVrcJ&algo_pvid=06311a3b-57b1-4d27-b671-9c9b69f25a5d&algo_exp_id=06311a3b-57b1-4d27-b671-9c9b69f25a5d-1&pdp_npi=4%40dis%21EUR%2167.42%2156.99%21%21%2172.98%2161.68%21%4021038e7717262740116864301e0409%2112000021872948123%21sea%21IT%210%21ABX&curPageLogUid=xiIqCmTsdtVd&utparam-url=scene%3Asearch%7Cquery_from%3A#nav-review"Almost perfect, just a small grounding issue. The station can accept mains input or 24VDC input. On 24VDC the frame and the tip of the iron are both grounded, but on mains only the frame is grounded. The soldering iron handle connector has a ground pin - tying it to the ground pin on the mains input IEC connector with a single wire solved the problem - see the black/red wire in the attached picture. The station now works perfectly and is a pleasure to use."https://github.com/deividAlfa/stm32_soldering_iron_controller?tab=readme-ov-file#compatibilityCurrently supported controllers:
Quicko T12-072: First gen Quicko, STM32F072 variant. Compatibility issues were fixed since v1.04.
Quicko T12-103 First gen Quicko, same board but mounting a STM32F103.
KSGER v1.5: Profile for STM32F103 (There are no other known CPUs used in this board).
KSGER v2, JCD T12, T12-955, Handskit: Profile compatible with all STM32F101/2/3xx models.
KSGER v3, T12-958: Profile compatible with all STM32F101/2/3xx models.
T12-958 v2: Profile compatible with STM32F103. Needs a mod for battery to work.
Don't follow the version reported in the original firmware to identify your board.
To this day, the easiest way to quickly identify your controller version is by checking the OLED screen connection:
4 pin (I2C) = Generic v2 (KSGER/Quecoo/Handskit/etc.)
6 pin (SPI) = Generic v3
7 pin (SPI) = Only used by KSGER v1.5 or first gen Quicko, easy to differentiate.
For KSGER v2/v3: As long as use the correct firmware, any STM32 variant (101/102/103/C8/R8/CB/RB) will work.
There are several compatible/cloned boards in the market that will work fine with KSGER profiles.
T12-951, T12-952, T12-956, T12-959 use STC MCU, not supported by this firmware.
@thm_wPerfect thanks for the information, regarding the Aixun T3a in the video there was no mention of the problems with the grounding but it had difficulty maintaining the temperature, perhaps some bug in the software, I don't know.
Regarding the QUICKO, among the user reviews I found a photo of the inside of the soldering station, you can see the grounding cable, but I don't understand if it is a user modification.
https://it.aliexpress.com/item/32803295956.html?spm=a2g0o.productlist.main.3.6b1cafe2hrSUxZ&algo_pvid=7ec99343-1511-4fd2-9052-97b92c797d27&algo_exp_id=7ec99343-1511-4fd2-9052-97b92c797d27-1&pdp_npi=4%40dis%21EUR%2147.88%2138.25%21%21%2151.83%2141.40%21%40211b6c1717262177045842226e537c%2110000000955772946%21sea%21IT%210%21ABX&curPageLogUid=EsCiLxwx43jl&utparam-url=scene%3Asearch%7Cquery_from%3A#nav-reviewChecking better I saw that the station is built already with the grounding.