KSGER T12 STM32 V3.1S WITH CHP MM32 - Page 1
Forum section: electronics / general

author: dexedison
author_rank: Newbie
timestamp: February 20, 2023, 08:42:44 pm
content: HELLO WITH EVERYONE. I AM NEW TO THIS WEB PAGE, I OPEN THIS THREAD WITH A PROBLEM THAT I HAVE, I BUY ON ALIEXPRESS THE KSGER T12 V3.1S SOLDERING STATION WITH MM32 CHIP, MY INTENSION WAS TO RESOLVE AN STM32 CHIP TO PROGRAM AND BE ABLE TO USE MY C245, BUT FOR DISTRACT ME I ENDED UP DESOLDERING 5 TRACKS FROM THE PLATE, NOW I HAVE PROBLEMS BECAUSE I DON'T KNOW HOW OR WHERE TO REBUILD THE LINES ON THE PLATE, I DON'T KNOW IF WHAT I WANTED TO DO WAS POSSIBLE.I LEAVE A LINK ON GOOGLE DRIVE SO YOU CAN SEE WHAT PLATE IS ABOUT AND MY PROBLEMhttps://drive.google.com/drive/folders/1lohAMFNDL4K1A5Mwn7tkiOMjP0dMofej?usp=sharing

author: DavidAlfa
author_rank: Super Contributor
timestamp: February 20, 2023, 09:43:14 pm
content: Checkthis schematicout, it will help.Your version has the 48pin package, but it's the same pins, i.e. PA1, PB3... (Not.the lin number).You can quickly compare the pinoutshere.It seems you only damaged few oled connections, perhabs also BOOT0 or few power pins.My advice is to remove the MM32 by making a big blob of solder, bridging all the pins.Set the temperature to about 350°C, higher than that you will lift the traces like dried leaves in the wind.Use leaded solder, it's extremely easier with it.Avoid any scratching or pressure over the pins/pads, also using flux is a must!

author: dexedison
author_rank: Newbie
timestamp: February 20, 2023, 09:53:35 pm
content: READY I SEND A MORE DETAILED PHOTO, I ALREADY DESOLDERED THE MM32 CHIP AND I HAVE 7 DAMAGED TRACKS ON THE BOARD, IF SOMEONE KNOWS WHERE I HAVE TO REBUILD THE 7 TRACKS IT WOULD BE GREAT BECAUSE MY IDEA IS TO SOLDER AN STM32 CHIP INSTEAD OF THE MM32 AND SO BE ABLE TO LOAD THE PROGRAM AT KSGER

author: DavidAlfa
author_rank: Super Contributor
timestamp: February 20, 2023, 10:37:22 pm
content: Please write properly, THERE'S NO NEED TO WRITE LIKE THIS.Damaged pins are:- 27: PB14, unused.- 30: PA9, OLED DC (Which you already fixed).- 31: PA10, unused.- 32: PA11, unused.- 33: PA12, unused.- 41: PB5, unused.- 45: PB8, unused.- 46: PB9, unused.Except 30, none of these are used. So simply solder the stm32 and ignore these pins.Be careful with 38, 39, 40, they're almost falling apart.Check the attached picture. The grey pins are not important.

author: Max.W
author_rank: Newbie
timestamp: July 17, 2023, 11:32:47 pm
content: Good day,what is the exact designation of STM32Thank youCan it be bought on AliExpress, or are they all fakes?

author: DavidAlfa
author_rank: Super Contributor
timestamp: July 18, 2023, 12:13:58 am
content: stm32f103c8t6 / stm32f103cbt6 for 48 pin,stm32f103r8t6 / stm32f103rbt6 for 64 pinYour luck will vary. Check the feedback, you will easily see if they are fake or not, but often they are!

author: Max.W
author_rank: Newbie
timestamp: July 18, 2023, 12:56:11 pm
content: ThanksWhat is the difference between stm32f103c8t6 and stm32f103cbt6 ?

author: DavidAlfa
author_rank: Super Contributor
timestamp: July 18, 2023, 01:56:56 pm
content: CB has 138KB flash, C8 64.But actually both are the same, the C8 also has 128K, "not tested" but they all work.So yes, you can get a C8 just fine.

author: Max.W
author_rank: Newbie
timestamp: July 18, 2023, 02:19:01 pm
content: Thanks