Sorry for the omission. Using the board on 2020 extrusions may need a thin piece of aluminum sandwiched between the board and extrusion as an additional heat sink, as speculated by @mghumphrey.
Can't say I see the benefit going that route 🤔 Sure... You got rid of 6 Wires ( potentially more depending on one's Setup ) for doing that *_BUT_* now you're exposing the hardest working Stepper Drivers to the Temperatures of a Heated Chamber? 🤨
Stepper drivers are quite temperature tolerant (125c operating), but inside the build chamber you absolutely need active cooling. Inside a electronics bay you can rely on the heatsinks most of the time, i think the practical limit for tmc2209 is around 1,2a run current before needing active cooling. At least i never got a overheat warning with 1,2a spreadcycle. Now i have one fan for the rpi since its summer and idles at 55c. Also why 2 instead of 4 drivers? For awd you need four drivers as tmc2209 can only supply 2a run current and you need all drivers of the same axis to be tied to the same cpu. Also 4 drivers would allow you more precise syncing since there is a plugin that uses an accelerator to fined the perfect microstep for awd syncing For me the only mcus inside the chamber that make sense are bed control mcus like the prusa xl has in combination with a segmented bed as well as toolhead boards. For motion you might as well make a hole in the back panel and stick a skr pico or annex super nova to it if you want a dedicated xy motion controller
Got one 🎉 excited to try it out. Only I just realized I need a couple more can connectors 😂
Those aren't "CAN connectors" by the way, they are just 2x2 Microfit 3.0
Enjoy, I think this is a cool board
@@HiroCreates3747 yeah I didn't name the connector appropriately, thanks for the correction.
You didn't go over the 2020 heat issue
I'm speculating it's because of the larger slot in the extrusion limits the surface area that's contacting the aluminum.
Sorry for the omission. Using the board on 2020 extrusions may need a thin piece of aluminum sandwiched between the board and extrusion as an additional heat sink, as speculated by @mghumphrey.
Can't say I see the benefit going that route 🤔 Sure... You got rid of 6 Wires ( potentially more depending on one's Setup ) for doing that *_BUT_* now you're exposing the hardest working Stepper Drivers to the Temperatures of a Heated Chamber? 🤨
Stepper drivers are quite temperature tolerant (125c operating), but inside the build chamber you absolutely need active cooling. Inside a electronics bay you can rely on the heatsinks most of the time, i think the practical limit for tmc2209 is around 1,2a run current before needing active cooling. At least i never got a overheat warning with 1,2a spreadcycle. Now i have one fan for the rpi since its summer and idles at 55c.
Also why 2 instead of 4 drivers? For awd you need four drivers as tmc2209 can only supply 2a run current and you need all drivers of the same axis to be tied to the same cpu. Also 4 drivers would allow you more precise syncing since there is a plugin that uses an accelerator to fined the perfect microstep for awd syncing
For me the only mcus inside the chamber that make sense are bed control mcus like the prusa xl has in combination with a segmented bed as well as toolhead boards. For motion you might as well make a hole in the back panel and stick a skr pico or annex super nova to it if you want a dedicated xy motion controller