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Change Rsense to 0.47 Ohms#55

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change-rsense
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Change Rsense to 0.47 Ohms#55
cjsha wants to merge 2 commits intomainfrom
change-rsense

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@cjsha cjsha commented Apr 10, 2026

Here are joulescope measurements through the 12V supply of the commutator controller with 0.47Ohm sense resistors. The green vertical cursors correspond to a measurement of when the motor is holding. The blue vertical cursors correspond to a measurement of when the motor is running. After the blue cursors, it shows the the power draw once I start stalling the motor - the current draw increases and the commutator quickly automatically self-disables.

Screenshot 2026-04-10 151215

Holding current: 1.14W (though not in the screenshot, other measurements showed up to 1.2W)
Running current: 1.44W (though not in the screenshot, other measurements showed to 1.5W)

The test commutator successfully performs a {turn:10000} command (100 minutes of turning) without self-disabling.

These measurements are target the version of firmware on 70e8c04 and Revision H of the hardware

@cjsha cjsha requested a review from jonnew April 10, 2026 19:36
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