M5 board - some requests, missing schematic, pictures

[ag88]

hi I just ordered a M5 board, some requests.
https://github.com/bigtreetech/BIGTREETECH-GTR-V1.0/tree/master/BTT%20M5%20V1.0/picture
https://biqu.equipment/products/bigtreetech-gtr-v1-0-bigtreetech-m5-v1-0-11-axis-3d-printer-motherboard

Missing things

1 - missing schematic diagram
2 - can you add some close up photos of the board (front and back)?
3 - can you provide a manual like the GTR V1.0 for the different stepper drivers? And heater, fan, thermistors and limit switch connectors?

Optional

4 - it would be good for M5 board to be its own new repository, so that new versions and old versions can be together
5 - for new version it would be good to have a buck converter take 12 v or 24 v - output 5v and 3.3v - 2 outputs
- many ARM e.g. stm32 control boards need 3.3v or/and 5v.
- ok to use linear IC as well e.g. LM317, but buck converter has more power and less heat sink needed
- main purpose to power mcu boards, e.g. stm32 development boards, RPi pico etc.
- edit: it seem this is there but no schematic, so cannot tell what is available on the board
6 - multiple TMC2208 uart can be multiplexed, but need extra multiplexer and pull up resistor

for multiplexer I prefer 74HC(T)4051
maybe new version M5 board can cater for it

--
this 'M5' board is needed because there are many (stm32 and other ARM, etc) development boards, but no boards that can put mosfet (for heat bed, hot end), motor driver, limit switch, thermistors and maybe power supply 5v, 3.3v together. It is a 'missing' board. Call it a 3d printer driver module board.

The connection use dupont wires and 2.54mm pin header is ok. No need to be shield, because development boards all have different pinouts. Only, wires can jumper differently. It is important to cater for 3.3v gpio (e.g. the mosfet drivers and motor drivers), because many ARM e.g. stm32, pico, etc all use 3.3v.