Electronics Ahoy

Last night I was given an unpopulated stepper motor board, so I soldered a bunch of headers on it, attached my “Plan B” DRV8825 stepper controllers to it, and crimped up some custom cables. “Plan A” was to use Adafruit’s Stepper Shield to run two NEMA17 stepper motors, but after one caught on fire and a second just not seeming to pass enough current to the motor, I’m giving up on it and switching to the 8825 chips. The 8825s are sensitive to LC (inductive capacitive) voltage spikes  from power leads longer than a couple of inches, and it’s strongly recommended to put a capacitor between VCC and ground as close to the 8825 as possible. This board neatly solves that problem by putting the capacitor right under the 8825 between the headers. I even color-coded the header pins for the different stepper motors and the inputs.

Author: homechicken

Dvorak Typist. Mandarin Speaker. Mugwump. Commander of Her Royal Majesty's 102nd Garden Gnome Regiment. Collector of Hobbies. Cat Whisperer. Maker of Things.

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