BIGTREETECH GTR V1.0 motherboard is a high-performance 3D printer main control board with the core controller STM32F407IGT6, which was launched by the 3D printing team of ShenZhen BigTree Technology CO.,LTD ., aiming at solving some problems existing in the motherboard market. The BIGTREETECH GTR V1.0 is the motherboard, and the BIGTREETECH M5 V1.0 is the expansion board.
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M5 board - some requests, missing schematic, pictures #77
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.
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
-- 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.