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Replying to

S6R4008V1A-UI10, 512 kilobytes of SRAM

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TC58BVG0S3HTAI0: 128 megabytes of EEPROM.

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SGM706. This is a supervisory circuit. It'll reset the microcontroller if the power browns-out.

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VHC 86 7633 J2623A It's a mystery.

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and they TRIED to cover up what this chip is, but they did a kinda terrible job. I think it's an S1D13513 Display Controller. It's got an SDRAM interface, RGB display output, multiple layers and transparency support, and some sprite/bitblt support

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this one... it's harder to tell. AM16 something?

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so

did some research and reversing on this, and say here that it's an ARM MCU: sebastien.andrivet.com/en/posts/wanha

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and this page just says it's a "low cost ARM MCU" but has some info on developing for it sebastien.andrivet.com/en/posts/dwin-

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it's weird that it has a button cell. maybe that mystery IC needs it. it's also got a buzzer, which is also weird

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So this site here gives some specs on the modules dwintech.en.made-in-china.com/product/hwyfzF It's 480x272, 65536 colors, with a 3.3v TTL serial interface.

dwintech.en.made-in-china.com

[Hot Item] Dwin 4.3 Inch Touch Screen Smart Uart Serial TFT LCD Module 480*270 HMI LCD Display

Model NO.: DMT48270M043_05W Usage: Small-sized LCM Touch Screen Type: Resistive Type: LCM Response Time: 10ms Viewing Angle: TN＋FILM

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And this repo: github.com/stevebor1/LCD- has a datasheet.

GitHub - stevebor1/LCD-Panel: Fork of ADVi3++ LCD-Panel, with improved Theme support

Fork of ADVi3++ LCD-Panel, with improved Theme support - GitHub - stevebor1/LCD-Panel: Fork of ADVi3++ LCD-Panel, with improved Theme support

1:22 AM · Jun 26, 2022

Replying to

they even scraped the CPU in their datasheet image

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It's got 64 levels of LED backlight. The active area is 95mm by 53.9mm (3.74" by 2.12")

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SO this thing came off a Wanhao Duplicator i3 plus.

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also known as a Monoprice Maker Select Plus.

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