FNIRSI HS-02A/B Soldering Iron

[Juan-P-84]

As suggested, I am creating a new discussion for this iron and its possible support to use IronOS.

As stated in the other thread: @Ralim

I just got a reply from the supplier, and unfortunately it is the same as with others who tried "The information is the Engineer's secret"
Pity, awesome hardware, but using a locked Firmware...

Someone on Reddit has taken the HS-02A apart:

https://www.reddit.com/r/soldering/comments/1d4no48/jbc_style_usb_soldering_iron_roundup_teardown/

https://youtu.be/hosUIRGxT-Y

I will ask there if he might be able to assist.

[joric]

So the CPU in HS-02 is apparently Nation N32L403, not CH571F (with Bluetooth) as in HS-01, that's bad, I was hoping it has everything.

Sadly no DOOM on this iron, despite 3 buttons and color screen, MCU is just 128K ROM / 24K RAM, DOOM needs 256K RAM and 256K data for MiniWAD.

Topic about FNIRSI HS-01: #1614

[Juan-P-84]

From the Thread over on Reddit:

Model | USB-PD | CPU | Mosfet
FNIRSI | WCH CH224K |Nation N32L403 | AOSMD 4407A

Here are the parts for these components, with datasheets linked:

Here are the parts for these components, with datasheets linked:

Model USB-PD CPU Mosfet
FNIRSI WCH CH224K Nation N32L403 AOSMD 4407A

[Juan-P-84]

The FNIRSI Store I bought it from got back to me, saying they will have a word with their Tech team regarding Technical information & Schematics, after I emphasized how important IronOS is, and that the other manufacturers like MiniWare and Pinecil benefit a great deal from it.

[manodareal]

Hi, I currently have an HS-02 A, but it's broken. The reason is that the N32L403 cpu died due to a burnt MOSFET, which sent 20V directly into the cpu. I ordered a new cpu on Aliexpress, but I'm not sure if it can be flashed with the firmware normally, or if I need to flash it in a different way ??

[Aldekein]

The IPS display replacement part I've got:

But the disassembly process looks so hard.