:)
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reverted to A4950 for easier motor setup (compared to AT8236 which for best results required voltage-control but and motor parameters identification, and auto-calibration is not finished) and still slightly smoother backdrivability with the current software
- more ground exposed on top layer to cool down A4950
- 1oz inner layer for better thermals
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Nema23 holes compatible with bolt pattern from stepperonline.com - (btw, Nema23 backplates aren't standardized!)
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bigger TVS for better bemf protection for high torque actuators
- lower TVS breakdown voltage for better protection of electrolytic capacitor and Schottky during bemf events
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moved CANbus termination resistor (120Ω) to the side tab so it can be desoldered easily if needed
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better capacitor placement - more ground exposed and direct current path to the driver
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added test circuit/footprint for ADMT4000 at the bottom layer